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

Remote Operation
Command
UPDN
UPDT
WATT
WDFL
Argument
Update Data Now. i.e: Take a power reading when the next trigger occurs. This
command is only operational if the PPM is in the Update Trigger Reset Mode. See
UPDT./ The PPM will output a single data point each time UPDN is received. The
output formats are the same as those described under UPDC except that each data
point is not followed by a comma. Instead each point is followed by a carriage
return followed by a line feed sent with EOI. If FPVO is being used, the frequency
at which a power measurement was taken is output also. See UPDC and FPVO.
Select Update Date Trigger Reset Output Mode. Prepares the PPM to take power
readings using UPDN or GET / none
Select Linear Power Format / none
Measure and Output Pulse Width and Fall-times of Pulse Profile Currently
Displayed. See FALL for definition of fall time. Pulse width is the time between the
50% point on the pulse’s rising edge and the 50% point on it’s falling edge / When
operating in channel A the PPM will output:
WIDAnn.nnnEsnn,FALAnn.nnnEsnn
For Channel B the output is:
WIDBnn.nnnEsnn,FALBnn.nnnEsnn
(n = delay in seconds; Esnn = exponent)
WDLAnnnnnn.nn
WDLBnnnnnn.nn
ZERA
ZERB
*IDN?
Set Channel A Delay Window / none
(n = microseconds; position of decimal point may vary. 0.012 µs min; 213,999.97 -
Start Delay - Reference Delay max)
Set Channel B Delay Window / none
(See WDLA)
Autozero Channel A Detector. Takes time to complete - SRQ can monitor successful
(or unsuccessful) completion / none
Autozero Channel B Detector. Takes time to complete - SRQ can monitor successful
(or unsuccessful) completion / none
Identification Query - Output Model; Software Version. The PPM will output:
Giga-tronics,8501A,0,VERnn.nn
8501A = model number;
0 = N/A;
VER = software version;
n = number of the software version. If using a Model 8502A, 8501A would be
replaced by 8502A
Manual No. 20790, Rev C, November 1998 3-51
Superceded by Revision D, March 2009