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26
8906
Analog Video Clamping Equalizing Distribution Amplifier w/SNMP
Key Features
•
Suitable for NTSC, PAL, SECAM, RGB, YUV,
Tri-level sync
•
Passive differential looping input with
eight active outputs
•
NTSC/PAL input presence detection with
SNMP trap generation
•
Selectable AC, DC, DC restore, or clamp
(slow/fast) input coupling
•
Selectable, dual-speed clamp for single-
ended hum rejection
•
Adjustable White Clipper removes peak
impulse transients
•
Card-edge adjustable cable-specific
equalization for up to 300 meters
•
Card-edge adjustable gain control
•
Excellent differential gain and phase
specifications
•
Card-edge status indicators
Specifications
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
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.
AC Coupled
EQ
DC Coupled
Analog
Adjust
DC Restored
Video
Input
Clamped
Video Input
Presence Detection
Performance
Cable equalization: Dual range
• 0 to 150m (0 – 500 ft.)
• 150 to 300m (500 – 1000 ft.)
White clip: On/off user selectable
Frequency response:
• ±0.05 dB to 5 MHz
• ±0.1 dB 5 to 8 MHz
• –1 dB at 16 MHz
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
8900V-R
J1
J2
J3
J4
Outputs
J5
J6
J7
J8
J9
J10
Loopthru
Gain
White
Clip
Ordering Information
This module can be mounted in a GeckoFlex
frame when ordered with the 8900V-R GeckoFlex
Video rear module.
8906-EQ-11
8906-EQ-0.6-3.7
Belden RG11/U, 8238
PIK AF 0.6/3.7 cable
cable
8906-EQ-PSF1-3
8906-EQ-1694
PSF 1/3 cable
Belden 1694A cable
8906-EQ-5C2VS
8906-EQ-8281
Canare L-5C2VS cable
Belden 8281 cable
8906-EQ-VCB100
8906-EQ-0.03-0.14
S2CEB VCB100 cable
Belden 1505A and Gepco
VPM 2000
8906-EQ-9259
Belden RG59U, 9259
cable
8906-EQ-VDM230
Gepco VDM230 cable
8906-EQ-1.0-6.6
PIK AF 0.6/6.6 cable
8906-EQ-0.6-2.8
PIK AF 0.6/2.8 cable
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
Outputs
Input
Analog
Video
Outputs
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