7700 MultiFrame Manual
7707IT Multi-Channel Intercom Fiber Transceiver
Page - 12
Revision 1.7
3.2.
SERIAL DATA
Number of Signals:
7707IT-8:
8 Inputs, 8 Outputs
7707IT-3:
3 Inputs, 3 Outputs
Connector at Breakout:
Multi-pin Removable Terminal Block
Signal Type:
RS-485 or RS-422 (selectable)
Input Termination:
120
Ω
or Open (selectable)
Input Failsafe Bias:
200mV (3.3mA into 60
Ω
) or None (selectable)
Bit Rate (max):
460Kb/s
3.3.
OPTICAL INPUT/OUTPUT
Connector:
Single Fiber version:
1 Bi-directional optical connector: SC/PC, ST/PC or FC/PC female
housing
Dual Fiber (F2) version:
2 optical connector: SC/PC, ST/PC or FC/PC female housing
Maximum Input Power:
Single fiber versions:
0 dBm
Dual fiber (F2) versions:
0 dBm
Input Optical Sensitivity
:
Single fiber versions:
-24 dBm
Single fiber (W) versions:
-26 dBm
Dual fiber (F2) versions:
-28 dBm
Fiber Size and Type:
Single Fiber versions:
9
µ
m core / single mode
Dual Fiber (F2) versions:
9
µ
m core / single-mode on TX, 62.5
µ
m core / multi-mode on RX
Output Wavelengths:
Standard:
1310nm, 1550nm (nominal)
CWDM:
1270nm to 1610nm (ITU-T G.694.2 compliant).
DWDM:
1530nm to 1560nm (ITU-T G.694.1 compliant).
Output Power:
Single fiber version:
1310nm FP (Standard):
-10 dBm ±1dBm
1310 & 1550 (W Versions):
-1 dBm ±1dBm
Dual fiber version:
1310nm FP (Standard):
-7 dBm ±1dBm
CWDM DFB:
0 dBm ±1dBm
DWDM DFB:
+7 dBm ±1dBm
3.4.
GENERAL PURPOSE OUPUTS (GPO)
Number of Signals:
2 GPO Outputs, 1 Common Reference (GPO COMMON)
Connector at Breakout:
Multi-pin Removable Terminal Block
Output Type:
Dry contact relay closure to GPO COMMON, normally open
Output Current (min):
100mA
