Grass Valley Thunder 80 v.1.0 - Manual (Page 53)

37
Specifications
Thunder Frame Specifications
General
Transmission Method ........................................... Digital Time Division Multiplexing (TDM)
Aggregate Data Rate through optical fiber... 150 Mbps
Data/GPI I/O on rear panel connector
Data
RS-232 Mode
Input Voltage Range: ....................................... >±3VP-P to <±25VP-P (.5V internal hysteresis)
Input Bias current: ............................................ ±100μA maximum
Input Impedance: ............................................. 33kΩ ±5%
ESD tolerance: .................................................... ±15kV Air-Gap, ±8kV Contact, ±15kV HBM
Output Voltage: ................................................. ±5.5VP-P @ ±5%, R
load
≥3KΩ
Data Rate: ............................................................ DC to 160k
baud
(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
baud
maximum).
RS-422, RS-485 Modes
Input Voltage Range: ....................................... 100mV to 12V differentially across “+” and “-“
data input pins or 50mV to 6V on either input
with respect to GND (50mV internal hysteresis)
Input Common Mode Range: ...................... +1.65Vdc ±10%
Input Bias current: ............................................ ±600μA maximum
Input Impedance: ............................................. 33kΩ ±5%
(For data rates ≥20kb/Sec and/or multi-drop
applications with longer cable lengths, an
external 110Ω resistor is recommended across
the “+” and “–“ data inputs of the unit furthest
from the driving source to properly terminate