7700 MultiFrame Manual
7707DT RS-232/422/485 Fiber Data Transceiver
Revision
1.8
Page - 11
3. SPECIFICATIONS
3.1.
RS-422/485 SERIAL DATA
Number of Signals:
4 Inputs/Outputs
Connector:
Multi-pin Removable Terminal Block
Signal Type:
RS-485 or RS-422 (selectable)
Input Termination:
110
Ω
or Open (selectable)
Input Failsafe Bias:
200mV (3.3mA into 60
Ω
) or None (selectable)
Bit Rate (max):
RS-422:
460Kb/s
RS-485:
1.2Kb/s, 2.4Kb/s, 4.8Kb/s, 9.6Kb/s, 19.2Kb/s, 38.4Kb/s, 57.6Kb/s,
76.8Kb/s, 115Kb/s, 153Kb/s, 230Kb/s, or 460Kb/s (selectable)
3.2.
RS-232 SERIAL DATA
Number of Signals:
3 Inputs/Outputs
Connector:
Multi-pin Removable Terminal Block
Signal Type:
RS-232
Bit Rate (max):
115Kb/s
3.3. LTC
DATA
Number of Signals:
1
Input/Output
Connector:
Multi-pin Removable Terminal Block
Signal Type:
SMPTE 12M Linear Time Code
Input Level:
0.2 to 4V p-p (balanced or unbalanced)
Rise/Fall Times:
40
µ
s
±
10
µ
s
Output Level:
1V p-p nominal (balanced)
3.4.
GENERAL PURPOSE INPUTS (7707DT-GPIO ONLY)
Number of Signals:
8 Inputs
Connector:
Multi-pin Removable Terminal Block
Type:
Opto-isolated, Active low
Input Voltage:
Safe Voltage Range:
-20V to +10V
Off Condition (min):
+3.5V
On Condition (max):
+2.5V (active low)
Input Current (min):
1mA
Input Current (max):
10mA (internally limited)
3.5.
GENERAL PURPOSE OUTPUTS (7707DT-GPIO ONLY)
Number of Signals:
8 Outputs
Connector:
Multi-pin Removable Terminal Block
Output Type:
Dry contact relay closure, normally open
Output Current (min):
100mA