CC 520 - Professional headset SENNHEISER - Free user manual and instructions

Product type	Professional two-ear active telephone headset
Brand	Sennheiser
Model	CC 520
Microphone	Ultra Noise Cancelling (UNC), unidirectional
Microphone frequency bandwidth	100 Hz – 4,5 kHz
Microphone sensitivity	-38 dB (1 V/Pa, 1 kHz)
Microphone impedance	~2 kΩ
Headphone frequency bandwidth	200 Hz – 4,5 kHz
Headphone impedance	250 Ω
Sound pressure level	112 dB (at 1 kHz, 1 Veff)
Cable length	1,0 m
Connector type	Quick-disconnect connector, Western plug
Power	Powered by the phone (no batteries required)
Main features	Active Anti-Shock system, Ultra Noise Cancelling, headband adjustment and ear clip, adjustable microphone, quick-disconnect connector
Care and cleaning	Soft, slightly damp cloth; cushion washable with soapy water
Safety	Do not use in humid or dusty environments
Available spare parts	Cushions (leather/foam), attachment clips, color clips, adapter cables, Universal Interface
Repairability	Do not repair yourself (voids warranty); contact Sennheiser
General information	Designed for telephones and call center systems; compatible with Universal Interface

Frequently Asked Questions - CC 520 SENNHEISER

How do I connect the CC 520 headset to my phone?

The headset is connected via a specific connection cable (accessory). You must unplug the handset and plug the Western plug of the cable into the telephone's handset jack. A click should be audible.

Can I wear the headset without the headband?

Yes, you can use the provided ear clip. Remove the headband and attach the earpiece to the ear clip. Adjust the hoop to your ear.

How do I adjust the microphone?

Bend the microphone boom to position the microphone at the corner of your lips, about 1 cm from your mouth. The microphone can be worn on the right or left.

What if the other party cannot hear me?

Check the cable connections and the quick-disconnect connector. Make sure the microphone is properly oriented towards your mouth.

How do I clean the Sennheiser CC 520 headset?

Use a soft, slightly damp cloth. The cushion can be washed in lightly soapy water. Do not use solvent or harsh cleaning products.

What accessories are available for the CC 520?

Replacement cushions (leather or foam), attachment clips, color clips, adapter cables, and Universal Interface UI 710 to UI 750.

Does the headset work without batteries?

Yes, the CC 520 is a passive headset that draws power from the telephone via the connection cable. No batteries are needed.

How do I change the earpiece cushion?

Pull the back of the cushion to remove it from the earpiece, then attach the new cushion by clipping it on.

Can I use the CC 520 with a computer?

Yes, if you use a Sennheiser Universal Interface (accessory) that allows connecting the headset to a computer via USB or jack plug.

What is the Active Anti-Shock system?

It is a protection system that attenuates excessive sound levels, protecting your hearing from sudden noises.

USER MANUAL CC 520 SENNHEISER

The CC 520/540/550 headset

The CC 520/540/550 is a binaural headset with two active earcups.

Via a telephone-specific adapter cable, you can connect the headset to all standard telephones or Call Center systems.

The headset is extremely comfortable to wear due to:

• ultra-lightweight design
  soft ear pad
  adjustable headband
  single-sided cable
• microphone that can be adjusted for left or right-hand use

The specially developed "Active Anti-Shock" system protects your ears from excessive volume. The microphone's "Ultra Noise Cancelling" technology effectively filters out ambient noise.

If the headset is connected to a Sennheiser Communications Universal Interface (accessory), you can switch between the handset and the headset and make use of the many additional options offered.

Contents of the packing unit

A - Headset with two earcups ①, microphone boom ②, headband ③, headset cable with one half of the "Easy Disconnect" facility ④

Cable clip
- Storage bag
- 2 replacement ear pads
3 colored identification clips

You additionally require a telephone-specific adapter cable (accessory) that is available from your specialist dealer.

Safety instructions

Do not use the headset in a damp or dusty environment.

Putting the headset into operation

Connection options

The headset is not directly connected to the telephone but via a telephone-specific adapter cable (accessory). Connection of the headset to the adapter cable is via the "Easy Disconnect" facility.

There are three connection options:

• The adapter cable is connected to the telephone instead of the handset.
• The adapter cable is connected to the telephone in addition to the handset.
• The adapter cable is connected to a Universal Interface (accessory).

Connecting the adapter cable to the telephone's handset socket

Pull the Western plug of the handset cable out of the telephone.

Connect the Western plug of the adapter cable to the handset socket on the telephone until it locks into place. An audible "click" should be heard.

Directly connecting the adapter cable to the telephone

Some telephones feature an additional socket to which you can connect a second handset or a headset.

Connect the Western plug of the adapter cable to this socket until it locks into place. An audible "click" should be heard.

Connecting the headset to a Universal Interface

For connecting the headset to a Universal Interface, please refer to the operating instructions of the Universal Interface.

The "Easy disconnect" facility

The headset is connected to the adapter cable via an "Easy Disconnect" facility. During a conversation, you can leave your telephone while holding the call by simply disconnecting the headset from the "Easy Disconnect" facility. This allows you to move around freely without having to put off the headset. As soon as you re-connect the two halves of the "Easy Disconnect" facility, you can continue your call.

B To connect the headset to the "Easy Disconnect" facility, plug in one half of the "Easy Disconnect" facility into the other half until it locks into place. An audible "click" should be heard.
C To disconnect the headset from the "Easy Disconnect" facility, press one of the two release buttons 5. The two halves of the "Easy Disconnect" facility automatically disconnect.

Wearing the headset

D Put the headset on.
E Turn the microphone boom towards your mouth.
F Adjust the length of the headband so that the ear pad exerts even, gentle pressure on your ear.
G Adjust the headband so that a snug fit is ensured. If the headband does not properly fit your head, grasp the middle part of the headband and carefully bend it.
H The headset features a flexible microphone boom ②. Bend the microphone boom so that the microphone ⑥ is placed at the corner of the mouth. Maintain a distance of approx. 1 cm between microphone and mouth.

The cable clip

1 Affix the headset cable to the clothing by means of the supplied cable clip. Attach the cable clip so that you can freely move your head.

The colored identification clips

J The colored identification clips (supplied) help to differentiate between individual headsets.

Slide the identification clip onto the headband from the top until it locks into place. An audible "click" should be heard.

When is the headset ready for operation?

The headset is ready for operation as soon as it is connected - via an adapter cable - to your telephone or a Universal Interface. If you disconnect the headset from the telephone or Universal Interface, it is out of operation.

Replacing the ear pad

K Grasp behind the ear pad and pull it up and away from the earcup. Slide the new ear pad onto the earcup.

Cleaning the headset

For cleaning the headset, only use a dry or slightly damp soft cloth. Do not use any solvents or cleansing agents as these can damage the varnish of the headset. If necessary, the ear pad can be cleaned with soapy water (use a mild cleanser such as washing-up liquid).

Transportation and storage

For space-saving transportation or storage, the earcup can be folded up and the microphone can be turned into the "rest" position.

L Turn the microphone into the "rest" position as shown. Rotate the earcup by 90^ .

To prevent the headset from being damaged, always use the supplied storage bag for transportation and storage.

If problems occur...

Problem	What to do
The other party cannot hear you.	Make sure that the cables are connected correctly.
You cannot hear the other party.
The headset does not properly fit your head.	Adjust the headband.

If the problem persists, please contact your local Sennheiser Communications agent for assistance. Never repair or attempt to repair the units as this will invalidate the warranty.

Accessories and replacement parts

The following accessories and replacement parts are available from your specialist dealer:

Accessory / Replacement part	Cat. No.
Adapter cable	available from your specialist dealer
Leatherette ear pad	91530 (CC 520)
	91531 (CC 540)
	91532 (CC 550)
Foam ear pad	91527 (CC 520)
	91528 (CC 540)
	91529 (CC 550)
Cable clip	91552
3 colored identification clips	91543
10 colored identification clips	91544
UI 710 Universal Interface	09882
UI 720 Universal Interface	09883
UI 730 Universal Interface	09884
UI 740 Universal Interface	09885
UI 750 Universal Interface	09886

Specifications

Headphones

Frequency response: 200 ~Hz - 4.5 kHz

Impedance: 250 Ω

Sound pressure level (at 1 kHz, 1V_rms ): 112 dB

Cable length: 1.0 m

Microphone

Frequency response: 100 ~Hz - 4.5 kHz

Pick-up pattern: Ultra Noise Cancelling (UNC)

Sensitivity (at 1 V/Pa, 1 kHz): -38 dB

Impedance: 2k

Das Headset CC 520/540/550

Ultra Noise Cancelling (UNC)

Empfindlichkeit

(bei 1 V/Pa, 1 kHz):

-38 dB

Impedanz:

2 k

Ultra Noise Cancelling (UNC)

Sennsibltà

-38 dB