Grass Valley Thunder 80 v.1.0 User Manual

Page 54

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