Symmetricom 58502A - Manual (Page 69)

Chapter 4 Command Reference
Input Port Status and Setup Commands
User’s Guide 4-11
Input Port Status and Setup Commands
INPut: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 3-5 in Chapter 3 of this guide.
INPut:SELect A | B
This command selects either input A or input B or backup oscillator
(Option 010) as the input channel. This command also disables
auto-switching.
Use A or B to select the appropriate input port.