Tektronix IsoVu TIVM Series, User Manual

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User service
Propagation delay
This procedure veri fi es that the TIVM Series IsoVu measurement system is
functioning and meets the warranted propagation delay speci fi cation. The
propagation delay will be measured by fi rst applying the output of the pulse
generator to the input of the oscilloscope and storing the captured waveform
as a reference waveform. Next, the measurement system is connected to the
oscilloscope and the output of the pulse generator is connected to the input of the
measurement system. The delay is then measured between the saved reference
waveform and the acquired waveform of the measurement system.
NOTE.
This procedure is valid for all versions of the TIVM Series IsoVu
measurement systems.
Create the reference
waveform
Complete the following steps to create the reference waveform:
1. Connect the Tek-DPG Deskew Pulse Generator output BNC cable directly to
Channel 1 input of the TekVPI oscilloscope.
2. Enable Channel 2 and use the following setups:
Vertical Scale: 500 mV/div .
Vertical Position: -3 divisions
Set Termination: 1 M Ω ,
Coupling: DC
Bandwidth: FULL
Deskew: 0 seconds
3. Set the Trigger menu using the following setups:
Type: Edge
Source: CH2
Slope: Negative
Level: +1.50 V
Coupling: DC
4. Use the following setups for Channel 1.
Vertical Scale: 200 mV/div
Coupling: DC
Termination: 50 Ω
Bandwidth: FULL
TIVM Series Measurement System User Manual 47