Spectracom Corporation
EPSILON CLOCK MODEL EC22S
EPSILON CLOCK User’s Manual
2-3
2.2
2.2
2.2
2.2
Auxilliary Connector Signals
Auxilliary Connector Signals
Auxilliary Connector Signals
Auxilliary Connector Signals
2.2.1 Alarm Connector
-
Relay contact
-
Maximum switching power: 30 W, 62.5 VA (resistive load)
-
Maximum switching voltage: 110 VDC, 125 VAC
-
Maximum switching current: 1 A
-
Connector:
9-pin female SubD
2.2.2 RS232
RS232 output for Time Of Day (TOD) information.
-
ASCII mode: asynchronous RS232C, 9600 bauds, 8 bits, 1 stop bit, no parity
-
NMEA mode: asynchronous RS232C, 4800 bauds, 8 bits, 1 stop bit, no parity
-
9-pin SubD female connector
The RS232 output in ASCII mode message is:
- Protocol: <Message> <CR> <LF>
-
Format, selected with same command than front panel one on http server:
o
Day/Month/Year
Hour: Minute: Second Source e.g.: 20/03/1996_21:02:05U
o
Month/Day/Year
Hour: Minute: Second Source e.g.: 03/20/1996_18:14:38L
o
Day of Year/Year
Hour: Minute: Second Source e.g.: 317/1996_18:16:20L
The "Source" byte holds one ASCII character which codes the reference of the selected time
scale:
N
No reference (when EC22S is not yet locked on GPS)
U
UTC reference
G
GPS reference
L
Local time
M
Manual ( only authorised in “Force holdover” mode or when the EC22S is not lock on a
reference source)
-
Output period:
1 message per second.
-
Output synchronization:
sent at 300 ms
±
100 ms after the 1pps output signal.
Summary of Contents for EC22S
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