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Chapter 1 Getting Started
Using Commands to Control Key Functions (Examples)
1-14 User’s Guide
Distributing of the Backup Oscillator (Option 010) Signal
Only
Just apply ac power to the 58502A. After powerup, allow the oscillator
to warm up for 5 minutes before using the signal. You do not have to
send a command. The oscillator will provide the output signals.
Commands That Are Common to All Distribution
Applications
Checking the Output Channels Status
To Use Unpacked Integer to Check Output Channels
Enter OUTP:QUES:UNP?, and press Return.
A string of 12 digits, consisting of 0s and 1s, is returned. The leftmost
digit designates channel 1 and the rightmost digit stands for channel
12. A 0 indicates that the associated output is functional, while a 1
indicates an output fault. For example, the following string indicates
that channels 2 and 7 are not functioning - 0,1,0,0,0,0,1,0,0,0,0,0.
To Use Packed Integer to Check Output Channels
Enter OUTP:QUES:PACK?, and press Return.
An array of Boolean returns. The returned string provides status on
each 10 MHz output in a single packed integer. Each bit is associated
with an output channel. The least significant bit = chan 1, next bit =
chan 2, and so on. If a bit is 0, the output signal is present. Hence, a
value of 0 shows indicates that all outputs are functioning. If there was
no output from channels 2 and 3, the response would be:
6 (1*0 + 2*1 + 4*1 + 8*0 + ... = 6).
To Check the Alarm Status
Enter ALAR?, and press Return.
If 0 is returned, alarm is off. If 1 is returned, alarm is on.
To Check for Serial-Port Errors
Enter SYST:ERR?, and press Return.
An integer and quoted string are returned. The first parameter is the
error number and the quoted string is the error description.