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

Remote Operation
Reference Power Related Commands
PRFAsnn.nn
PRFBsnn.nn
Set Channel A Reference Power for graphic display. Sets 100% power reference
point as a reference for automatic timing measurements. It also serves to center the
pulse on the power axis so that displays and plots of pulses with low amplitudes are
expanded to show more resolution.
(s = polarity; nn.nn = dBm value)
Set Channel B Reference Power for graphic display. Sets the 100% power reference
point as a reference for automatic timing measurements. It also serves to center the
pulse on the power axis so that displays and plots of pulses with low amplitudes are
expanded to show more resolution.
(s = polarity; nn.nn = dBm value)
Min Value: -60.00 dBm, Max Value: +110.00 dBm
Sample Program:
10 P=0 ! CHANNEL A REFERENCE
20 ! POWER IN DBM
30 !
40 ! CHANGE CHANNEL A REFERENCE
50 ! POWER
60 OUTPUT 704;PRFA;P
70 !
80 ! CHANGE CHANNEL B REFERENCE
90 ! POWER
100 OUTPUT 704;PRFB;P
110 END
☛ NOTE: RPOA and RPOB are operable only in the Graph Mode.
RPOA
Output Current Reference Power for Channel A. If the PPM is in the linear mode it
will output:
RFALnn.nnEsnn
(nn.nn = Watts; Esnn = exponent)
If the PPM is in the dBm mode it will output:
RFADsnn.nn
(nn.nn = dBm; s = polarity)
RPOB
Output Current Reference Power for Channel B. Linear mode output is:
RFBLnn.nnEsnn
(nn.nn = Watts; Esnn = exponent)
The dBm mode output is:
RFBDsnn.nn
(nn.nn = dBm; s = polarity)
Manual No. 20790, Rev C, November 1998 3-27
Superceded by Revision D, March 2009