Grass Valley Thunder 80 v.1.0 - Manual (Page 54)

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Specifications
General
the line. This will minimize random bit errors
induced by cable reflections.)
ESD tolerance: .................................................... ±15kV Air-Gap,
±8kV Contact,
±15kV HBM
Output Voltage: ................................................. 0-3.3Vper output unloaded,
0-1.85Vper output at R
load
54Ω.
6.6VP-P output differential unloaded,
3.7VP-P output differential at R
load
110Ω
Data Rate: ............................................................ DC to 200k bits/Sec
(High speed limit determined by
asynchronous sampling rate. Jitter is fixed @
320nSec. Higher data rates are possible if
equipment driven has greater jitter tolerance.
Up to 1M bits/Sec. maximum).
Time delay after a transmitted data
burst before a return message can be
accepted at the receiver (RS-485 only): .... 16.4μSec
Data Format Inputs (Pins 7 and 10 on the DB-15 HD Data I/O connector):
RS-422 Mode: ..................................................... No connection, input pin left “floating”
RS-232 Mode: ..................................................... Input pin either hardwired to ground (pins 22
and 25) or switched to ground by a remote GPI
closure
Voltage on Floating Input Pin: ................ 3.3V ±2%
Input Resistance when pulled
to ground: ...................................................... 100kΩ ±5%
RS-485 Mode: ..................................................... Input pin either hardwired to “Format Bias”
(pin 15) or switched to “Format Bias” by a
remote GPI closure
Voltage on Floating Input Pin: ................ 3.3V ±2%
Input Resistance when pulled
to “Format Bias”: .......................................... 9.1kΩ ±5%
Format Bias Output (Pin 15 on the DB-26 HD Data I/O connector):
Output Voltage: ........................................... 12Vdc ±5%
Output Current Limit: ................................ 300mAdc maximum
GPI
Inputs (Pin 4 on the DB-15 HD Data I/O connector. GND on pin 5):
Voltage on Floating Input Pin: ..................... 3.3V ±2%
Input Voltage for