Grass Valley Thunder 80 v.1.0 - Manual (Page 62)

46
Specifications
Mechanical/Environmental
ESD tolerance: .................................................... ±15kV Air-Gap,
±8kV Contact,
±15kV HBM
Output Voltage: ................................................. 0-3.3V per output unloaded,
0-1.85V per 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 (up to 1M bits/Sec.
maximum) are possible if equipment driven
has greater jitter tolerance).
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 21, 23, 24 and 26 on the DB-26 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 10) 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 10 on the DB-26 HD Data I/O connector):
Output Voltage:.................................................. 12Vdc ±5%
Output Current Limit: ...................................... 300mAdc maximum
GPI Bolt Card
Inputs (Pins 1, 2, 3, 4, 5, 6, 7 and 8 on the DB-26 HD Data I/O connector. GND on pin9):
Voltage on Floating Input Pin: ..................... 3.3V ±2%
Input Voltage
for Remote Contact Activation: ................... ≤1Vdc
(typically grounded through GPI contacts;
TTL/HCMOS level drive also suitable)