Transcript
8937D Dual SDI/ASI Reclocking Equalizing Distribution Amplifier Key Features • Two separate distribution amplifiers on a single card • One with a looping differential input with three active outputs in addition to the loop-through passive output • One with a single-ended terminating input with four active outputs • Suitable for SMPTE 310M, SMPTE 259M, DVB ASI, SDI 270 Mb/s and most other 800 mV data from 4 Mb/s to 360 Mb/s • Input presence detection for each channel with SNMP trap generation • Independent reclocking circuits for each channel to reduce jitter • Automatic input cable equalization for up to 300 meters for each channel • Card edge LED status indicators
This distribution amplifier is ideal for spaceconstrained applications where a limited number of signal copies are required. By offering twice the density, it’s a perfect solution for mobile production applications—enabling 20 channels of distribution in only 2 RU of rack space. Both channels are fully DVB ASI compatible and can be used in any application where standard SDI video or ASI signals are to be copied and distributed. The standard reclocker circuits greatly reduces jitter-induced over cable runs adjacent to high power lines or from unstable sources of standard data rate signals. The reclocker can easily be disabled to pass SMPTE 310M and other nonstandard data rate signals. A user-enabled video presence detection feature generates individual SNMP traps for each channel that can be sent to our NetCentral SNMP manager or other SNMP systems. ASI or SDI In 2
8900V-R
J4
J5
J6
J7
J8
J9
J10
Output 2
Output 1
Output 1
Input 1
Output 1 (passive)
Loopthru
Reclocker Bypass Switch
ASI or SDI Out 2
Reclocker
EQ Video Input Presence Detection
Local Control
J3
Input 2
Video Input Presence Detection
SDI Out 1 (passive)
J2
Output 2
EQ
ASI or SDI In 1
J1
Bypass Switch
Microprocessor
ASI or SDI Out 1 LEDs
Ethernet Control via frame bus
Ordering Information
Specifications Supported Frame Types
Output
GeckoFlex with 8900V-R GeckoFlex Video rear module, Gecko video frames: 8900TX-V, 8900TF-V, 8900TFN-V
Type: 800 mV serial digital data in phase with the input signal
Power Rating
Number of outputs: • Four outputs, three active plus one passive loopthrough • Four outputs, four active signals
3.5 Watts – single slot
Inputs Type: 800 mV ±10% serial digital data including SMPTE 259M
Connector type: BNC
Connector type: BNC
Return loss: >15 dB (up to 360 MHz)
Impedance: High Z differential loop-through and 75Ω terminating
Performance
Supported data rates: 4 Mb/s through 360 Mb/s Reclocked data rates: 143, 177, 270, 360 Mb/s
This module can be mounted in a GeckoFlex frame when ordered with the 8900V-R GeckoFlex Video rear module.
8937D Dual SDI/ASI reclocking equalizing distribution amplifier
Impedance: 75Ω
Electrical Length: <20 ns Temperature Range: 0° – 45°C
Return loss: >15 dB (up to 360 MHz)
Local Indicators/Controls
Auto equalization: Up to 300 meters (270 Mb/s)
LED indicators: • Signal presence • Input sample rate User controls: • Bypass/auto jumper selection for reclocker • Local/local-remote control enable jumper Remote: SNMP trap generation – input presence detection
For detailed specifications, installation, and setup instructions see: www.grassvalley.com/docs/modular
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