66 Serial Communication and Command Set
Broadcast Mode – EVENT DATA
Command: B3, 03
B3 configures the clock to broadcast from the main RS-232C port any event data at the time it is
recorded. O3 configures the clock to broadcast from the option RS-232C port any event data at
the time it is recorded.
Response: (Local) mm/dd/yyyy hh:mm:ss.sssssss nnnAL
C
(UTC) mm/dd/yyyy hh:mm:ss.sssssss nnnAU
C
Where: nnn = Event-Buffer Read Index Number
U = UTC Time
L = Local Time
Broadcast Mode – STATUS
Command: B4, O4
B4 configures the clock to broadcast any status data from the main RS-232C port when it changes.
O4 configures the clock to broadcast any status data from the option RS-232C port when it changes.
NOTE: When a valid fault is detected, the specific status fault is broadcast once (with Julian day,
and time) to the chosen serial port. When the fault clears, another message is sent describing the
cleared fault.
Response: ddd:hh:mm:ss I=nn:nn X=nn:nn
C
(Updates whenever the status changes.)
Where: I, Internal clock conditions
X, External clock conditions
nn:nn, Status byte(Hex).
The 2 digits preceding the colon describe the present condition of the instrument. The 2 digits
after the colon indicate the parameters, which have changed.
Bit Weight Fault Bit Weight Fault
0 1 OCXO Not Inst. (set
to 1)
4 16 Out-of-Lock
1 2 Stabilized (stab. = 1) 5 32 Time Error
2 4 Power Supply Error 6 64 VCXO Error
3 8 IRIG Bus Fault 7 128 Receiver Failure
Table 9.1: Fault Indications and Definitions
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