Spectracom NetClock 9489 - ASCII RS-485 and Alarms;Relays Specifications

Pin No. Signal Name Function
Top row of 5 pins
1 PPS_OUT 1PPS output
2 SERIAL_OUT_TX RS-232 Transmit data
3 SERIAL_OUT_RX RS-232 Receive data
4 NC No connection
5 GND Ground
Bottom row of 4 pins
6 NC No connection
7 NC No connection
8 NC No connection
9 NC No connection
Table 5-8:
ASCII RS-232 Output connector pin assignments
5.2.4.4 ASCII RS-485 and Alarms/Relays Specifications
Inputs/Outputs
:
(2) Two contact relay connections (NC, common, NO)
Signal Type and Connector
:
Terminal block
Contacts Switch under max. load of 30 V
DC
, 2A
Contacts rated to switch 220 V
DC
Breakdown voltage of 1000 V
DC
between contacts
Switch time 4ms, max.
RS-485 Differential Output:
+1.65 V Typical Common Mode Output Voltage
2V min Differential Output Voltage Swing with 100 Ω load,
3.3 V Differential Output Voltage Swing, No Load, with ESD protection
NetClock User Reference Guide 351
APPENDIX