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8902 Analog Video Equalizing Distribution Amplifier
Key Features
•
Suitable for NTSC, PAL, SECAM, RGB, YUV,
Tri-level sync
•
Passive differential looping input with
eight active outputs
•
Selectable AC, DC, and DC restore input
coupling modes
•
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
Offering the same features and functionality
of the 8901 utility DA, this module adds cable
equalization to accurately compensate for
attenuation and phase errors induced from
long cable runs. Additionally, the DC restoration
mode can be used to smoothly restore the
DC component during blanking level to zero
volts. This DC restoration circuit functions with
or without synchronization pulses so it can
be used with RGB or YUV signals that do not
contain synchronization pulses. Our entire line
of both analog and digital distribution amplifiers
offer differential loop-through inputs designed
to remove common mode hum induced by
cable runs adjacent to AC mains cables.
EQ
Analog
Adjust
Video
Input
Performance
Cable equalization: Dual range
• 0 to 150m (0 – 500 ft.)
• 150 to 300m (500 – 1000 ft.)
Frequency response:
• ±0.025 dB to 5 MHz
• ±0.05 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
Electrical length: 20 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
LED indicators: Fault, power, frame bus
communication
8900V-R
J1
J3
Outputs
J5
J7
J9
Loopthru
Gain
AC Coupled
DC Coupled
DC Restored
Ordering Information
This module can be mounted in a GeckoFlex
frame when ordered with the 8900V-R GeckoFlex
Video rear module.
8902-EQ-11
Belden RG11/U, 8238
cable
8902-EQ-1694A
Belden 1694A cable
8902-EQ-8281
Belden 8281 cable
8902-EQ-0.03-0.14
Belden 1505A and Gepco
VPM 2000
8902-EQ-9259
Belden RG59U, 9259
cable
8902-EQ-VDM230
Gepco VDM230 cable
8902-EQ-1.0-6.6
PIK AF 0.6/6.6 cable
8902-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
25
J2
J4
Outputs
J6
J8
J10
Input
Analog
Video
Outputs
8902-EQ-0.6-3.7
PIK AF 0.6/3.7 cable
8902-EQ-PSF1-3
PSF 1/3 cable
8902-EQ-5C2VS
Canare L-5C2VS cable
8902-EQ-VCB100
S2CEB VCB100 cable
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