Chapter 4 Command Reference
Input Port Status and Setup CommandsInput Port Status and Setup CommandsINPut:A:QUEStionable?This query reports if there is a signal present on input A.
Returns a single character, 0 or 1.
A value of 0 indicates signal is present (not questionable).
A value of 1 indicates no signal is present.
INPut:B:QUEStionable?This query reports if there is a signal present on input B or backup oscillator (Option 010).
Returns a single character, 0 or 1.
A value of 0 indicates signal is present (not questionable).
A value of 1 indicates no signal is present.
INPut:ALARM?This query returns the alarm status of devices connected to the alarm input pins (6 and 7) of the ALARM/STATUS port.
A value of 0,0,0 indicates no alarm exists.
A value of 1,0,0 indicates that an alarm exists from the device connected to pin 6.
A value of 0,1,0 indicates that an alarm exists from the device connected to pin 7.
An example of how to use and interpret the alarm inputs is given on page
This command selects either input A or input B or backup oscillator (Option 010) as the input channel. This command also disables
Use A or B to select the appropriate input port.
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