Grass valley 8902 DATASHEET
8902 Analog Video Equalizing Distribution Amplifier 25
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
Offering the same features and functionality |
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of the 8901 utility DA, this module adds cable |
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equalization to accurately compensate for |
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attenuation and phase errors induced from |
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long cable runs. Additionally, the DC restoration |
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mode can be used to smoothly restore the |
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DC component during blanking level to zero |
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volts. This DC restoration circuit functions with |
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or without synchronization pulses so it can |
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be used with RGB or YUV signals that do not |
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contain synchronization pulses. Our entire line |
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of both analog and digital distribution amplifiers |
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offer differential loop-through inputs designed |
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to remove common mode hum induced by |
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cable runs adjacent to AC mains cables. |
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Input |
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Loopthru |
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Gain |
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AC Coupled |
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Analog |
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EQ |
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Analog |
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Adjust |
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DC Coupled |
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Video |
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Video |
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DC Restored |
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Outputs |
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Input |
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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
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
Ordering Information
This module can be mounted in a GeckoFlex frame when ordered with the 8900V-R GeckoFlex Video rear module.
8902-EQ-11 |
8902-EQ-0.6-3.7 |
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Belden RG11/U, 8238 |
PIK AF 0.6/3.7 cable |
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cable |
8902-EQ-PSF1-3 |
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8902-EQ-1694A |
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PSF 1/3 cable |
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Belden 1694A cable |
8902-EQ-5C2VS |
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8902-EQ-8281 |
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Canare L-5C2VS cable |
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Belden 8281 cable |
8902-EQ-VCB100 |
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8902-EQ-0.03-0.14 |
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S2CEB VCB100 cable |
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Belden 1505A and Gepco |
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VPM 2000 |
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8902-EQ-9259 |
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Belden RG59U, 9259 |
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cable |
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8902-EQ-VDM230 |
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Gepco VDM230 cable |
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8902-EQ-1.0-6.6 |
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PIK AF 0.6/6.6 cable |
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8902-EQ-0.6-2.8 |
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PIK AF 0.6/2.8 cable |
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For detailed specifications, installation, and setup instructions see: www.grassvalley.com/docs/modular
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