VM-8H - Receiver Kramer - Free user manual and instructions
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| Product Type | Eight-channel video receiver for multiplexed twisted-pair signal |
| Brand | Kramer |
| Model | VM-8H |
| Category | Professional AV receiver |
| Video Inputs | 1 x RJ-45 (twisted pair) for multiplexed composite video |
| Video Outputs | 8 x BNC for composite video (CVBS) |
| Supported Video Formats | NTSC, PAL, SECAM (composite video) |
| Max Transmission Distance | Up to 300 m (1,000 ft) with high-quality twisted pair cable |
| Connector Type | BNC for outputs, RJ-45 for input |
| Housing | Open-frame low profile |
| Dimensions | 22.0 cm × 18.0 cm × 4.2 cm (8.7" x 7.1" x 1.7") |
| Weight | 1.4 kg (3.1 lbs) |
| Power Supply | 12 V DC, 500 mA (external adapter included) |
| Power Consumption | 6 W max |
| Control | No local controls; automatic detection of multiplexed signal |
| LED Indicators | Power LED, input signal LED |
| Operating Temperature | 0 °C to 40 °C (32 °F to 104 °F) |
| Storage Temperature | -20 °C to 60 °C (-4 °F to 140 °F) |
| Humidity | 10% to 90% RH (non-condensing) |
| Included Accessories | 12 V DC power adapter, installation guide |
| Maintenance | Wipe with a dry, soft cloth; avoid liquids |
| Reparability | No internal user-serviceable parts; contact technical support |
| Standards | RoHS compliant |
Frequently Asked Questions - VM-8H Kramer
What is the function of the VM-8H receiver?
The VM-8H is an eight-channel video receiver that de-multiplexes a single twisted-pair signal into eight composite video outputs. For each input signal, it works together with a compatible transmitter to deliver discrete video channels over low-cost UTP cable.
How do I connect the VM-8H to my video system?
Connect the transmitter's UTP output to the RJ-45 input on the VM-8H using a twisted-pair cable. Then connect the BNC outputs to your displays or recording devices via standard coaxial cable with BNC connectors. Finally, plug in the 12 V DC power adapter.
What type of cable should be used between the transmitter and the VM-8H?
Use a shielded twisted-pair (STP) cable with a minimum of Category 5e (Cat-5e) performance. The cable must have a solid conductor and proper RJ-45 termination. Avoid using flat telephone cables.
What is the maximum operating distance?
The VM-8H supports distances up to 300 meters (1,000 feet) over high-quality twisted-pair cable. For longer runs, additional signal conditioning or fiber-optic solutions are recommended.
Can the VM-8H receive HD-SDI or component video signals?
No, the VM-8H is designed specifically for composite video (CVBS) signals. It accepts standard NTSC, PAL, or SECAM signals. For HD-SDI or component video, a different Kramer solution is necessary.
How many video channels can the VM-8H receive?
The VM-8H receives eight separate composite video channels from one multiplexed twisted-pair link. Each channel appears individually on one of the eight BNC outputs.
Does the VM-8H require any configuration or setup?
The VM-8H is automatic and requires no DIP switches or software configuration. It locks onto the incoming multiplexed signal as soon as the transmitter and receiver are powered and connected.
What do the LED indicators on the VM-8H mean?
There are two LEDs: the Power LED lights up when 12 V DC is supplied, and the Signal LED indicates the presence of a valid multiplexed input signal. If the Signal LED is off, check the cable and transmitter.
Is the VM-8H compatible with any Kramer transmitter?
The VM-8H is designed to work with the matching VM-8T transmitter from Kramer. Using other third-party transmitters may lead to signal incompatibility and is not guaranteed to operate correctly.
How should I clean and maintain the VM-8H?
Disconnect power before cleaning. Use a dry, soft cloth to remove dust from the housing and connectors. Do not use any liquids or sprays. Periodically inspect the BNC connectors for corrosion and the RJ-45 for bent pins.
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USER MANUAL VM-8H Kramer
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Product information
Brand : Kramer
Model : VM-8H
Category : Receiver