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

Testing and Calibration
12. Record this value in the Linearity Error column (above the Accumulated Error figure given for
each attenuation value) in the Test Data recording sheet. This value should be less than the value
specified for Accumulated Error for each attenuation level.
13. Add an additional 10 dB of attenuation between the coupler and the Peak Power Detector, and
repeat Steps 6 through 12. The next lower rows of the CW Data section of the Test Data sheet
will be used to record the readings taken for the 20, 30, 40, and 50 dB attenuations as Steps 6
through 12 are repeated for each level of attenuation. Add the previous and current linearity
errors to determine the accumulated error.
14. Set the Pulse Generator to generate 5 V pulses (TTL) with 10 µs duration and a repetition rate of
1 kHz. Connect the Pulse Generator output to the TRIG Input on the rear panel of the PPM.
15. Set the PPM to use an external trigger in the Peak Mode, milliwatts display, and peak averaging
set to 100. This is done by pressing [PEAK] [MENU] (1) [F2] [MENU] (2) [F2] [100] [UNITS]
(If the display indication is not in milliwatts, press [MENU] (4) [F3]).
16. Remove all attenuators and repeat Steps 2 through 9 for the Peak Mode, recording the test
indications in the Peak Linearity Data section on the Test Data recording sheet.
Manual No. 20790, Rev C, November 1998 5-5
Superceded by Revision D, March 2009