Arbiter Systems 931A, Operation Manual

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To determine the size of a particular custom record, add the number of
bytes for each selected parameter as found in Table B.1.
B.3.3 Log Data Triggering
Data logging may be triggered in four ways: the front panel LOG DATA
key, the RS232 LOG command, a valid Timer-A event, or on a programmed
time interval. Press the LOG DATA key and the Model 931A will record
the data type selected on the display. Send the RS232 LOG command to
the Model 931A serial port to accomplish the same thing.
Using the timer for triggering requires a bit more setup. First select
the timer as the trigger using the auto-log setup. Next use the timer
configuration to select the desired Timer A trigger condition. If the normal
data-type has been selected, set the display for the desired data type.
When ready to begin data collection, arm the timer by pressing the front
panel ARM/RESET key or issue the RS232 TAM command. Data will
be logged each time a valid Timer-A trigger is received. Data logging will
not occur faster than once per second. Triggers received faster than once
per second will be ignored. Press the ARM/RESET key or issue the TRS
command to suspend data logging.
To trigger data on a programmed time interval, three parameters must
be set: the time interval, the start time, and the stop time. The time
interval may be set from one second to 23 hours, 59 minutes and 59 seconds.
This setting represents the interval between each data recording.
The
Model 931A will continue to log data at the chosen time interval for as
long as the clock time is between the start and stop times, and the stop
time is later than the start time. Data logging will stop when the stop
time is reached or when the extended memory is full.
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