This distribution amplifier offers all the features and functionality of our 8901 utility DA and our 8902 equalizing DA, plus a dual-speed clamp and video presence detection with SNMP trap generation. While all Grass Valley® distribution amplifiers remove differential or common mode hum induced by cable runs adjacent to AC mains cables, this module offers a dual-speed self-clamping circuit to handle single-ended hum caused by grounded coaxial cable shields. Additionally, a White Clipper circuit eliminates impulse noise above a user-selectable threshold. And the user-enabled video presence detection feature generates SNMP traps that can be sent to our NetCentral® SNMP manager or other SNMP systems for mission-critical applications.

Supported Frame Types
GeckoFlex with 8900V-R GeckoFlex Video rear module, Gecko video frames: 8900TX-V, 8900TF-V, 8900TFN-V
Power Rating
2.3 Watts – single slot
Input
Type: 1 Vp-p analog video with operation up to 2 Vp-p NTSC, PAL, SECAM, RGB, YUV, Tri-level sync
Connector type: BNC
Impedance: Passive high impedance differential loop-through
Return loss: >40 dB up to 5 MHz
CMRR: >66 dB 50/60 Hz
Common mode input: ±10V
Output
Voltage: 1 Vp-p ±2 dB
Number of outputs: Eight active plus one passive loop-through input
Connector type: BNC
Impedance: 75Ω
Return loss: >40 dB up to 5 MHz
Output DC: <50 mV
Performance
Cable equalization: Dual range
Differential gain: <0.1%
Differential phase: <0.1°
Gain range: ±2 dB
Tilt: <0.5%
Coupling: AC, DC, DC restore, clamp two speeds
Clamp hum rejection:
Slow: 20 dB
Fast: 46 dB
Electrical length: 22 ns
Temperature range: 0° to 30°C
Indicators/Controls
User controls: Output gain adjustment range: ±2 dB EQ adjustment for up to 300 meters of input cable
White clipper adjustment range: 500 mV to 1200 mV
LED indicators: Fault, power, frame bus communication
GeckoFlex 8906 Analog Video Clamping Equalizing Distribution Amplifier With SNMP Data Sheet
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