682XXB/683XXB MM A-67/A-68
TEST MODEL
RECORD 68253B/68353B
3-15 Pulse Modulation Test: Video Feedthrough
Test Procedure Lower Limit Measured Value Upper Limit
SetF1 to 5.0 GHz
Setpulse width W1 to 5.0 s
SetPRI (period) to 0.01 ms
Measureand record the Video Feedthrough voltage spikes .... –10mV _______mV +10mV
3-16 Pulse Modulation Test: RF On/Off Ratio
Test Procedure Lower Limit Measured Value Upper Limit
SetF1 to 5.0 GHz
Measureand record the peak of the signal on the Spectrum
Analyzer.(Measured signal must be >60 dB below top graticule
tomeet specification; this represents an On/Off Ratio of >80 dB.) . 60 dB _______ dB N/A
3-17 Phase Modulation Tests
FM Imput Sensitivity Procedure
(Wide FM Mode) Lower Limit Measured Value Upper Limit
SetF1 to 5.0 GHz
Recordthe M deviation displayed on the 68253B/68353B .............. _______rad
Calculateand record the M accuracy ............... 93.7% _________ % 106.3%
FM Imput Sensitivity Procedure
(Narrow FM Mode)
SetF1 to 5.0 GHz
Recordthe M deviation displayed on the 68253B/68353B .............. _______rad
Calculateand record the M accuracy ............... 93.7% _________ % 106.3%