Hp 70428A Option 002 Tunable Source Program Example; Overview - HP 70427A User Manual

Overview

HP 70428A Option 002 Tunable Source Program Example

HP 70428A Option 002 Tunable Source Program
Example
This program example first rests the instrument and then asks for a desired
output frequency (the frequency must be with the specified range of the
operation). It will then set up the HP 70428A Option 002 to output that
frequency at +10 dBm. To set the output frequency the program must use an
algorithm to determine the correct LO and RF source frequencies. A short
routine at the end of the program checks and displays the HP 70428A
Option 002 errors.
A short description of the tuning algorithm and comments for the program
follow the program listing.
10 DIM Error-message$[40]
20 !
30 !
40 OUTPUT 728;"*RST"
50 !
60 !
70 INPUT "Enter desired RF output frequency in
GHzl',Rf-output-freq
80 Rf-output-freq=Rf-output-freq*1000 ! Convert to MHz.
90 !
100 !
110 Combline-nilm=(Rf-output-freq) DIV 600
120 !
130 !
140 SELECT Rf-output-freq
150 CASE <25800
160 Combline-nw--Combline-num+l
170 Lo-f req=Combline-nilm*600
180 Rf-source-freq--ABS(Lo-freq-Rf-output-freq)
190 IF Rf-source-freq<300 OR Rf-source-freq>600 THEN
200 Lo-freq--(Combline-nilm-l)*600
210 Rf-source-freq=ABS(Lo-freq-Rf-output-freq)
220 END IF
230 ASE >=25800
240 Lo-freq=Combline-niim*600
250 Rf-source-freq--ABS(Lo-freq-Rf-output-freq)
260 IF Rf-source-freq<300 THEN
270 Lo-f req= (Combline-nilm-1) *600
Remote Programming
HP 70427A/HP 70428A User's Guide 7-17