Manual - 8500A Series Peak Power Meter - Giga-tronics

Remote Operation
When plots are output from the PPM, the pulse profile will always be in a linear format including when
the reference power is labeled in dBm.
3.3.11 Programming Notes
The programming commands for the PPM can be strung together as long as the maximum length
limitations specified in the General Information discussion are not exceeded.
This feature enables procedures to be formatted in a logical manner, and reduces the overall number of
programming lines required. The following sample program shows how this can be done.
10 CLEAR 704! DEVICE CLEAR
20 OUTPUT 704;ASDL200,AVAS25,AUTO
30 OUTPUT 704;PLCNabcdefg;PLPNqwerty;
40 RSFL,PLTM
50 SEND 7;UNL
60 SEND 7;LISTEN 6
70 SEND 7;TALK 4
80 SEND 7;DATA
90 WAIT 180
100 SEND 7;UNT UNL
110 END
Line 20: Sets the maximum pulse width for autoscaling to 200 microseconds; sets the averaging for
autoscaling to 25 averages; instructs the PPM to autoscale.
Lines 30 & 40: Set the code numbers for the plot to abcdefg; sets the part number for the plot to qwerty;
instructs the PPM to find the rise and fall times of the displayed pulse; instructs the PPM to place the
markers as defined and to plot the displayed pulse profile.
The remaining lines in the sample program are used for bus handling.
Care should be exercised when grouping commands. If conflicting commands are sent in the same string,
the last one to be received will be implemented. For example:
OUTPUT 704;MRKA,CDLA5,PKPA
This program line would result in the cursor delay being set at 5 µs, but the PPM would enter the
channel A Peak Mode, not the Marker Mode as indicated by the MRKA portion. In other words, the PPM
does not execute any of the commands until (CR) (LF) are received at the end of the program line.
Manual No. 20790, Rev C, November 1998 3-35
Superceded by Revision D, March 2009