APS4 - Distributor AKG - Free user manual and instructions

USER MANUAL APS4 AKG

Please read the manual before using the equipment!

MODE D'EMPLOI 33

CLA-Cable Length Adjustment

A						B
SRA2 B/W RA4000 B/W						RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG212 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG5 RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG57 50-60 M HZ RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG59 50-60 M HZ RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RO RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG5R (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (n) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG 58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG21 RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (n) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG 5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG213 (m) RG5B (m) RG21 RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG21 RG58 (m) RG213 (m) CLA (dB) RG58 (m） RG213 (m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG21 RG58 (m) RG213 (m) CLA (dB) RG58 (m） RG213 (m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m） RG58（m） RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG58（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（n）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG213（m）RG5B（m）RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B( m ) RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG 6B（m） RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RO RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RO RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA (dB) RG58 (m) RG213 (m) RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) CLA RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG5B( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58 (m) RG58( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG58 (m) RG58( m ) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG 5B( m ) RG 5B( n ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RO 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RO 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG RG58 (m) RG 5B( m ) RG 5B( m ) RG RG58 (m) RG213 (m) CLA RG58 (m) RG213 (m) RG

4 Betriebshinweise

Allgemeine Hinweise

1 Safety and the environment. 19
Safety 19
Environment 19
2 Description 20
Introduction 20
Packing List 20
Optional Accessories 20
Description 21
Front Panel 21
Rear Panel 22
Receiving Antennas (optional) 22
SRA2 B/W 22
RA4000 B/W 22
3 Getting Started. 23
Rack Mounting a Single Antenna Splitter 23
Rack Mounting Two Antenna Splitters Side by Side 23
Setting Up Antennas 24
Placement 24
Mounting Antennas on Floor Stands 24
Wall/Ceiling Mounting 25
Connecting Antennas 25
Single-channel System with Passive Antennas 25
Single-channel System with Active Antennas 25
Multichannel Systems with APS4 Antenna Splitters 26
The CLA Switch Bank 26
4 Operating Notes 28
General Hints 28
Systems with Distributed Power Supplies. 28
Powering Up 28
Powering Down 28
5 Cleaning 29
Surfaces 29
6 Troubleshooting 30
7 Technical data 31

Only for frequency bands designed for use in the USA:

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations. Changes or modifications not expressly approved in writing by AKG Acoustics may void the user's authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

1 Safety and the environment

Safety

• Do not spill any liquids on the equipment.
• Do not place any containers containing liquid on the device or the power pack.
• The equipment must only be used in dry rooms.
• The equipment must only be opened, serviced, and repaired by authorised personnel. The equipment contains no user-serviceable parts.
• Before connecting the equipment to power, check that the AC mains voltage stated on the supplied AC adapter is identical to the AC mains voltage available where you will use the equipment.
• Only operate the equipment with the supplied AC adapter with a 12 V DC output. Using adapters with a different output voltage or current type may cause serious damage to the unit.
• If any solid object or liquid should get into the equipment, shut down the system immediately. Disconnect the AC adapter from the power outlet at once and have the equipment checked by our customer service department.
• If the equipment is not going to be used for a long time, disconnect the AC adapter from the power outlet. Please note that if you turn the equipment off while leaving the AC adapter plugged in, it is not fully isolated from the power supply.
• Do not place the equipment near heat sources such as radiators, heating ducts, amplifiers, etc. and do not expose it to direct sunlight, excessive dust, moisture, rain, mechanical vibrations, or shock.
• To avoid hum or interference, route all audio lines, particularly those connected to the microphone inputs, away from power lines of any type. If you use cable ducts, be sure to use separate ducts for the audio lines.
• Clean the equipment with a moistened (not wet) cloth only. Be sure to disconnect the AC adapter from the power outlet before cleaning the equipment. Never use caustic or scouring cleaners or cleaning products containing alcohol or solvents since these may damage the enamel and plastic parts.
• Only use the equipment for the applications described in this manual. AKG cannot accept any liability for damages resulting from improper handling or misuse.

Environment

ROHS OK

• The power supply unit consumes a small amount of electricity even when the unit is switched off. To save energy, unplug the power supply unit from the socket if you are not going to be using the unit for some time.
• The packaging is recyclable. Dispos of the packaging in an appropriate recycling collection system.
• If you scrap the unit, separate the case, electronics and cables and dispose of all the components in accordance with the appropriate waste disposal regulations.

2 Description

Introduction

Packing List

Thank you for your decision to buy an AKG product. Please read the user instructions carefully before using the unit and keep them in a safe place so that you can refer to them in the future at any time. We wish you a lot of fun and success!

1 x antenna splitter (APS4)

1 x 19"-rack mount kit (RMU4000)

2 x antenna frontmount cable

10 x antenna cables (MK PS)

1 x power supplies 12 V DC/5 A*

1 x dual lock tape

Check that the packaging contains all of the components listed above. Should anything be missing, please contact your AKG dealer.

With the dual lock tape you can fix the power supply at any point.

NOTE

*The power supply 12 V DC/5 A and the respective power cord for EU, US, UK are only included with APS4 EU, APS4 US and APS4 UK.

Optional Accessories

active directional antenna SRA2 B/W passive directional antenna SRA2 W

antenna cables
MK PS: 60 cm

active omnidirectional broadband-UHF-antenna RA4000 B/W

antenna booster AB4000

remote power adapter ASU4000

Description

The APS4 is an antenna splitter for setting up UHF multichannel systems with up to four receivers per antenna splitter. (Note that the number of channels you can actually operate simultaneously depends on local frequency plans.)

The APS4 features two rear panel antenna inputs for connecting SRA2 B/W or RA4000 B/W active antennas with built-in boosters. Each antenna input provides a 12 V DC supply voltage for powering up to three active antenna components, e.g., one active antenna and two AB 4000 antenna boosters. Also located on the rear panel are two sets of four antenna output connectors for up to four diversity receivers and two additional antenna outputs for feeding the antenna signal to additional APS4 antenna splitters.

The APS4 is housed in a 1 U, half-rack case so you can mount two antenna splitters in a single rack space.

The APS4 can be powered from a local power supply.

Both the antenna boosters and the antenna splitter are wideband devices for the entire UHF band.

Front Panel

Fig 1: APS4 front panel

The antenna splitter front panel provides the following controls and indicators:

ANTENNA A, ANTENNA B: The blue OK LED will be lit for as long as the ANTENNA A IN/ANTENNA B IN input provides the correct supply voltage for active components.

Should the supply voltage at an input be shorted or fail (drop below 2 V) the OK LED for that input will extinguish and the red ERROR LED be lit instead.

NOTE

The two OK LEDs do NOT indicate the operating status of the connected antenna booster and therefore will not go out when you disconnect an antenna cable.

CLA (Cable Length Adjustment): The round plate with the AKG logo covers a bank of three DIP switches for matching the antenna inputs (ANTENNA A IN, ANTENNA B IN) to the length of the connected cable run.

Rear Panel
Fig 2: APS4 rear panel

The APS4 rear panel provides the following inputs and outputs:

DC IN 12 V/2 A: Input jack for an optional 12 V DC power.

ANTENNA A IN, ANTENNA B IN: BNC input connectors for SRA2 B/W, or RA4000 B/W remote antennas. When using diversity receivers you will need two receiving antennas (optional). Each antenna input provides a 12 V DC supply voltage for an active antenna.

ANTENNA A OUT TO SR: The four BNC connectors 1A through 4A deliver the antenna signals for the A inputs of up to four diversity receivers. All unused outputs remain open. The cable used in this case must not be longer than three meters.

ANTENNA B OUT TO SR: The four BNC connectors 1B through 4B deliver the antenna signals for the B inputs of up to four diversity receivers. All unused outputs remain open.

In addition to the antenna signals, outputs 1A through 4A and 1B through 4B provide a 12V DC supply voltage for the connected receivers. The cable used in this case must not be longer than three meters.

The current carrying capacity at each of the eight output jacks is one ampere. When on one / multiple output jacks a DC short circuit occurs are respectively connected to this receiver goes dead and the other receivers continue to function properly.

LINK A TO PS, LINK B TO PS: These two BNC outputs carry the RF signal of the two antennas A and B. You can connect the LINK outputs to the antenna inputs of another APS4 antenna splitter to daisy-chain several antenna splitters.

Please note that you must have a separate 12V / 5 A power supply for each APS4.

Receiving Antennas (optional)

Passive and active directional antennas as well as passive and active omnidirectional antennas are available for the APS4 antenna system. All antennas are wideband devices for the entire UHF band.

The active antennas are powered by the APS4 antenna splitter via the antenna cables. For complex systems with long antenna cables, we recommend powering each active antenna from a decentralized 12 V/5 A power supply via an ASU4000 remote power adapter.

SRA2 B/W

The SRA2 B/W is an active directional antenna with a rugged, water-resistant case designed specifically for indoor and outdoor use at a distance from the performance area. An integrated high-performance antenna booster allows you to position the antenna up to 100 m (330 ft.) away from the receiver. Using RG213 antenna cables and two AB4000 antenna boosters in series, you can set up the SRA2 B/W even 200 m (660 ft.) away from the receiver.

The antenna provides a BNC output, status LED, and integrated stand adapter.

RA4000 B/W

The RA4000 B/W is an active omnidirectional antenna with a rugged, water-resistant case designed specifically for indoor and out- door use in close proximity to the performance area. An integrated high-performance antenna booster allows you to position the antenna up to 100 m (330 ft.) away from the receiver. Using RG213 antenna cables and two AB4000 antenna boosters in series, you can set up the RA4000 B/W even 200m (660 ft.) away from the receiver.

The antenna provides a BNC output, status LED, and integrated stand adapter.

3 Getting Started

Rack Mounting a Single Antenna Splitter

Rack Mounting Two Antenna Splitters Side by Side

1) Unscrew the four rubber feet (Please note Fig. 6 on page 63) from the antenna splitter bottom panel.
2) Unscrew the two fixing screws (2) from each side panel.
3) Use the fixing screws (2) to screw the short bracket (3) to one side panel and the long bracket (4) to the other side panel. The brackets are contained in the supplied rack mounting kit.
4) Install the antenna splitter in your rack.

1) Unscrew the four rubber feet (Please note Fig. 7 on page 64) from each antenna splitter's bottom panel and remove the screws (5) from the rubber feet (1).
2) Unscrew the two fixing screws (2) from the right-hand side panel of one antenna splitter and from the left-hand side panel of the other antenna splitter.
3) Insert one connecting strip (4) into each free slot in the side panel of the first antenna splitter, making sure to align the hole in each connecting strip (4) with the appropriate threaded hole in the antenna splitter bottom panel.
4) Fix the two connecting strips (4) on the first antenna splitter using two of the screws (5) you removed from the rubber feet.
5) To join the two antenna splitters, slide the connecting strips (4) on the first antenna splitter through the free slots in the side panel of the second antenna splitter. Make sure to align the hole in each connecting strip (4) with the appropriate threaded hole in the bottom panel of the second antenna splitter.
6) Fix the two connecting strips (4) on the second antenna splitter using two of the screws (5) you removed from the rubber feet (1).
7) Screw a short bracket (6) to the outer side panel of each antenna splitter using for each bracket two of the screws (2) you removed from the antenna splitter side panels.
8) Install the antenna splitters in your rack.

NOTE

Be sure to keep the remaining screws (5) for later use.

Setting Up Antennas

The following hints on placing antennas apply to both single-channel and multichannel systems with any number of channels.

Placement

Reflections off metal parts, walls, ceilings, etc. or the shadow effects of musicians and other people may weaken or cancel the direct transmitter signal. For best results, place the antennas as follows:

• Place the antennas near the performance area (stage). Make sure, though, that the transmitter will never get any closer to the antennas than 16 ft. (5 m). Place the two antennas at least 8 inches. (20 cm) from each other.
• There should always be a direct line of sight between the transmitter and antennas.
• Place the receiver at least 5 ft. (1.5 m) away from any big metal objects, walls, scaffolding, ceilings, etc.
• Do not place antennas in wall recesses.
• Place antennas at least 5 ft. (1.5 m) away from any equipment that may emit RF radiation such as lighting racks, fluorescent lamps, digital effects units, or PCs.
• If you set up two antennas side by side (e.g., for diversity reception), check that the two antennas are spaced at least 20cm (8 in.) apart.

Mounting Antennas on Floor Stands

When mounting the antennas on floor stands, be sure to proceed as follows:

Fig 3: Mounting Antennas on Floor Stands

• Use the supplied SA63 (at RA4000 W, RA4000 B/W) or the integrated stand adapter (at SRA2 W, SRA2 B/W) to mount the antenna on the boom of a boom stand.
• Pull the boom out all the way to one side to make sure the antenna will be at least 28 inches (70 cm) away from the stand.
• Extend the stand high enough to place the boom at least 6 ft. (1.8 m) above the floor.
• Wind the antenna cable around the boom. Do not allow the cable to sag below the boom because this may degrade the reception quality.

Wall/Ceiling Mounting

If you mount your antennas on a wall or ceiling, be sure to keep the following minimum distances:

Fig 4: Minimum distances from plane surfaces

• Mount the antenna at least 10cm (4 in.) in front of and at a minimum lateral distance of 50cm (20 in.) from any walls or other plane surfaces, metal grids, or metal scaffolding.

Fig 5: Minimum distances from floor and ceiling

Make sure the antenna will sit at least 15cm (6 in.) above the floor or 50~cm (20 in.) from the ceiling (or 15cm (6 in.) if you route the cable to the antenna from above).

Single-channel System with Passive Antennas

1) Measure the cable run between the receiver and each antenna.
2) Refer to Table 1 on page 27 to find out whether you will need to break the cable run down into several cables and insert one or two AB4000 antenna boosters. Table 1 states the maximum acceptable cable lengths for RG58 and RG213 cables separately.
3) Connect an antenna cable to each antenna.
4) Referring to Table 1, connect the antennas to the antenna inputs on the receiver. If you need one or two AB4000 antenna boosters, you will need to insert an ASU4000 remote power adapter between the receiver and the first antenna booster.
5) Check that the AC mains voltage stated on the power supplies for the ASU4000 and the receiver is identical to the AC mains voltage available where you will use your system. Using the power supplies with a different AC voltage may cause damage to the unit.
6) Connect the remote power adapter and the receiver to their respective power supplies and connect each power supply to a convenient power outlet.

Using the power supplies with a different AC voltage may cause damage to the unit.

Single-channel System with Active Antennas

1) Measure the cable run between the receiver and each active antenna.
2) Refer to Table 1 on page 27 to find out whether you will need to break the cable run down into several cables and insert one or two AB4000 antenna boosters. Table 1 states the maximum acceptable cable lengths for RG58 and RG213 cables separately.
3) Connect an antenna cable to each antenna.

4) Referring to Table 1, connect each antenna to one or two AB4000 antenna boosters (if necessary), an ASU4000 remote power adapter, and to the appropriate antenna input on the receiver.
5) Check that the AC mains voltage stated on the power supplies for the two ASU4000 and the receiver is identical to the AC mains voltage available where you will use your system. Using the power supplies with a different AC voltage may cause damage to the unit.
6) Connect the remote power adapters and the receiver to their respective power supplies and connect each power supply to a convenient power outlet.

Using the power supplies with a different AC voltage may cause damage to the unit.

Multichannel Systems with APS4 Antenna Splitters

For wiring examples for multichannel systems, refer to figs. 8 and 9 from page 65.

When setting up a multichannel system, remember the following points:

1) You can connect up to four receivers to each APS4 antenna splitter.
2) For large systems with up to 50 channels you can daisy-chain the required number of antenna splitters:
3) Each antenna input on the antenna splitter is capable of powering a maximum of three active components (e.g., RA4000 B/W + 2 x AB4000) via the antenna cables. In the following cases you will need an ASU4000 remote power adapter to power active components (each ASU4000 is capable of powering up to three active components, too):
- The cable run from the antenna splitter to an active component is long enough to reduce the supply voltage below the acceptable minimum.
- A device (e.g., an antenna combiner*) in the line between the APS4 and an active component interrupts the DC supply voltage across the antenna cable.

The ZAPD21 antenna combiner from Mini Circuit feeds the supply voltage through. Similar devices from other manufacturers may not do so.

• You have used an antenna combiner to connect two antenna lines to the same antenna input. If you use three or more active components in one antenna line, insert an ASU4000 remote power adapter between the antenna combiner and the first of the active components. If the number of active components in both lines totals more than three, be sure to insert an ASU4000 remote power adapter into each line. The remote power adapter prevents the antenna splitter power supply from being overloaded.

The CLA Switch Bank

CLA-Cable Length Adjustment

The RF signal level at each antenna input on the antenna splitter(s) depends on the frequency band, antenna type, cable type, and cable length.

To ensure optimum signal level at the antenna input, set the CLA switches on each antenna booster and on the antenna splitter(s) as shown in Table 1 below.

1) Remove the cover of the CLA switch bank.
2) Set the three DIP switches as required for your frequency band, antenna model, cable type, and cable length.
3) Replace the cover.

Tab 1: CLA DIP switch positions depending on frequency band, antenna, cable type and cable length, CLA=Cable Length Adjustment

A						RG58	RG213	B
SRA2 B/W RA4000								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG212 CLA RG58 RG212 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								BG	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLA								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG212 CLA RG58 RG212 CLB								RG58	RG213
RG58 RG212 CLA RG58 RG212 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								BG	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLC								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG213 CLA RG58 RG213 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								BG	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLC								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG214 CLA RG58 RG214 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								BG	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLC								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG215 CLA RG58 RG215 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								BG	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLC								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG216 CLA RG58 RG216 CLB								RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB								RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB								RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB								RG58	RG213
RG58 RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB						BG	RG213
RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLC						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG217 CLA RG58 RG217 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						BG	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLC						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG218 CLA RG58 RG218 CLB						RG58	RG213
RG58 RG219 CLA RG58 RG219 CLB						RG58	RG213
RG58 RG219 CLA RG58 RG219 CLB						RG58	RG213
RG58 RG219 CLA RG58 RG219 CLB						RG58	RG213
RG58 RG58 RG219 CLA RG58 RG219 CLB						RG58	RG213
RG58 RG58 RG219 CLA RG58 RG219 CLB						RG58	RG213
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG218 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG58 RG219 CLB
RG58 RG58 RG219 CLA RG5B RG219 CLB
RG58 RG58 RG219 CLA RG5B RG219 CLB
RG58 RG58 RG219 CLA RG5B RG219 CLB
RG58 RG58 RG219 CLA RG5B RG219 CLB
RG58 RG58 RG219CLA RG5B RG219 CLB
RG58 RG58 RG219CLA RG5B RG219 CLB
RG58 RG58 RG219CLA RG5B RG219 CLB
RG58 RG58 RG219CLA RG5B RG219 CLB
RG58 RG58 ROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGLOBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROBILGROSS

4 Operating Notes

General Hints

• Be sure to assign a separate carrier frequency to each wireless channel (transmitter and receiver).
• Do not operate two or more wireless channels on the same frequency at the same time and location. This would cause unwanted noise due to radio interference.

To prevent damage from overloading the antenna splitter power supply, always switch power to the various components of your system on and off in the order described in the following sections. Also note the information on "Multichannel Systems with APS4 Antenna Splitters" in section 3.

Systems with Distributed Power Supplies

Powering Up

1) Switch power to all transmitters ON.
2) Switch power to the antenna splitter and all receivers connected to the antenna splitter ON simultaneously. The blue OK LEDs and the green status LEDs on the connected active components will illuminate.

Powering Down

1) Switch power to the antenna splitter and all receivers connected to the antenna splitter OFF simultaneously.
2) Switch power to all transmitters OFF. The blue OK LEDs and the green status LEDs on the connected active components will extinguish.

5 Cleaning

Surfaces

• Use a soft moistened with water but not wet cloth to clean the surfaces.

ATTENTION

Never use caustic or scouring cleaners or cleaning agents containing alcohol or solvents, since these may damage the enamel and plastic parts.

6 Troubleshooting

Problem Possible	Cause Remedy
No sound.	Power supplies not connected to power outlet(s).	Connect power supplies to power outlet(s).
	DC cables not connected or defective.	Connect or replace DC cables.
	Antennas not connected.	Connect antennas.
	Power supplies defective.	Contact your nearest AKG Service Center.
No or poor reception on some channels.	Transmitter and/or receiver switched OFF.	Switch transmitter and/or receiver ON.
	Transmitter batteries down.	Replace transmitter batteries.
	Power supply of receiver makes poor contact.	Check power supply connector for secure fit.
	Power supply of receiver is defective.	Replace power supply.
	Transmitter and receiver of dead channel are tuned to different frequencies.	Tune transmitter and receiver to the same frequency.Refer to the transmitter and receiver Instruction Manuals.
	Transmitter or receiver defective.	Contact your nearest AKG Service Center.
Green LED on an active antenna component is dark.	Antenna cable not connected or makes poor contact.	Connect antenna cable or check connectors for secure fit.
	Antenna cable defective.	Replace antenna cable.
	Active antenna component defective.	Contact your nearest AKG Service Center.
One of the ERROR LEDs on the antenna splitter is lit.	Supply voltage for active antenna components shorted out.	Check all cables and active antenna components connected to antenna splitter.
	Supply voltage for active antenna components too low because cable run is too long.	Refer to Table 1 to check cable lengths and use shorter cables or break down cable run and insert ASU4000(s) (see also Wiring Diagrams).

7 Technical data

	APS4 Antenna Splitter
Type 2 x 1 to 4 receivers + 2 x 1 PS (for daisy-chaining)
Carrier range 470 to 952 MHz
Attenuation 0, 2, 4, 6, 8, 10, 12, 14 dB switchable
RF inputs 2 x BNC sockets, 50 ohms
RF outputs 10 x BNC sockets, 50 ohms
Power requirement 12 VDC
Size 200 x 190 x 44 mm (7.8 x 7.5 x 1.7 in.)
Weight approx. 970 g (2.2 lbs.)
	AB4000 Antenna Amplifier
Carrier range 500 to 865 MHz
Gain approx. 17 dB to 7 dB, selectable
RF input 1 x BNC, 50 ohms
RF output 1 x BNC, 50 ohms
Power requirement 10	VDC, supplied through connecting cable from APS4 or 8 VDC from ASU4000
Size 110 x 35 mm (4.3 x 1.4 in.)
Weight approx. 150 g	(5.3 oz.)
	RA4000 B/W Active Omnidirectional Antenna
Carrier range 500 to 865 MHz
Antenna gain + booster gain 17 dB
RF input 1 x BNC socket, 50 ohms
RF output 1 x BNC socket, 50 ohms
Power requirement 10	VDC, supplied through connecting cable from APS4 or 8 VDC from ASU4000
Size 78 x 50 x 50 mm / 3.1 x 2 x 2 in.
Weight 68 g (2.4 oz.)
	SRA2 B/W Active Directional Antenna
Carrier range 500 to 865 MHz
RF output 1 x BNC socket, 50 ohms
Power requirement 10	VDC, supplied through connecting cable from APS4 or 8 VDC from ASU4000
Antenna gain + booster gain 21.5 dB
Coverage angle	70°
Size 230 x 240 x 26 mm (9 x 9.5 x 1 in.)
Weight approx. 250 g (8.8 oz.)
	ASU4000 Remote Power Adapter
Carrier range 500 to 865 MHz
RF input 1 x BNC socket, 50 ohms	/ 8 V DC
RF output 1 x BNC soc	ket, 50 ohms
Power requirement 12 VDC
Size 78 x 50 x 50 mm / 3.1 x 2 x 2 in.
Weight approx. 167 g (5.9 oz.)

This product conforms to the standards listed in the Declaration of Conformity. To order a free copy of the Declaration of Conformity, visit http://www.akg.com or contact [e-mail].

Note on compliance with national rules:*

The APS4 is a wide band accessory for AKG's wireless microphone systems.

Its applied frequency range is given by the receivers used in the system. Please make sure that your used frequency range complies with your national regulations.

• such as RTTE directive, FCC rules

Sommaire

Antenne directive active
SRA2 B/W
Antenne directive passiv
SRA2 W

Cable d'antenne
MK PS:60 cm
MKA5:5 m
MKA20:20 m

Antenne omnidirectionnelle active UHF à large bande RA4000 B/W Antenne omnidirectionnelle passive UHF à large bande RA4000 W

CLA-Cable Length Adjustment

CLA-Cable Length Adjustment

Complex system (RF connections)

For other products and distributors worldwide visit www.akg.com

Technische Änderungen vorbehalten. Specifications subject to change without notice. Ces caractéristiques sont susceptibles de modifications. Ciri riserviamo il diritto di effettuare modifiche tecniche. Nos reservamos el derecho de introducir modificaciones Tecnicas. Especificações sujeitas a mudanças sem aviso prévio.

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