Trigger Sensitivity and Jitter test

TB 9-4931-538-40

(12) Set signal generator for a frequency of 100 MHz and amplitude of V p-p 150 mV

as displayed on screen.

(13) Slowly adjust the RPG control cw until trigger level just stops triggering.

Record the trigger level setting (_____________). This value is Vpos.

(14) Reset the trigger level to 0.000 V and slowly adjust the RPG control ccw until

trigger level just stops triggering. Record the trigger level setting (_____________). This

value is Vneg.

(15) Calculate the sensitivity. Vsense = 150 mV - (Vpos - Vneg). The value will be

40 mV.

(16) Reset the trigger level to 0.000 V.

(17) Set HF Reject to On is highlighted and repeat (13) through (15) above. The

value will be 57 mV (+ 3 dB).

(18) Reset the trigger level to 0.000 V.

(19) Press Timebase key and set Sweep Speed = 100 ps/div.

(20) Press Channels and VOLTS/DIV keys and set Sensitivity = 50.00 mV/div.

(21) Press Trigger key and set TRIGGER LEVEL to Trigger Level = 0.000 V; HF

Sens and HF Reject Off is highlighted.

(22) Connect equipment as shown in figure 7, CONNECTION C.

(23) Set synthesized signal generator for a frequency of 2.5 GHz and amplitude of

V p-p 200 mV as shown on display.

NOTE

It will be necessary to go to the Measure Mode to verify the

measurement of the V p-p = 200 mV.

(24) Slowly adjust the RPG control cw until the trigger level just stops triggering.

Record the trigger level setting (_____________). This value is Vpos.

(25) Reset the trigger level to 0.000 v and slowly adjust the RPG control ccw until

trigger level just stops triggering. Record the trigger level setting (_____________). This

value is Vneg.

(26) Calculate the sensitivity. Vsense = 200 mV - (Vpos - Vneg). The value will be

<200 mV.

(27) Set Trigger Level = 0.000V. Set delay to 35 ns.

(28) Connect equipment as shown in figure 8.