Downconverter Program Comments - HP 70427A User Manual

Remote Programming
HP 70427A Downconverter program example
330 ! CHECK FOR INSTRUMENT ERRORS
340 LOOP
350 OUTPUT 728;"SYST:ERR?"
360 ENTER 728;Error_number,Error_message$
370 EXIT IF Error_number=0
380 PRINT "An error has occurred..."
390 PRINT "The error number and message
is: ",VAL$(Error_number)&Error_message$
400 PRINT
410 END LOOP
420 ! END OF TEST PROGRAM
430 !
440 !
450 END

Downconverter Program Comments

50 Reset the instrument.
60 Setup for an input frequency of 10 GHz.
70 Autorange the input attenuator.
80 Autorange the IF amplifier.
120 Query the input frequency.
130 Read the input frequency.
140 Query the LO frequency.
150 Read the LO frequency.
160 Query the IF frequency.
170 Read the IF frequency.
180 Query the input attenuation.
190 Read the input attenuation.
200 Query the IF amplifier gain.
210 Read the IF amplifier gain.
340 Start a loop to read any error messages in queue.
350 Query any error message.
360 Read any error message.
370 Exit loop if there are no error messages or they have all been read.
7-16 HP 70427A/HP 70428A User's Guide