Performance Verification
VX4792 User Manual
F-39
Synchronous Operation Check
. The following procedure can only be performed when two or more
VX4792 Arbitrary Waveform Generator modules are installed into the same
mainframe. The procedure provides steps for testing six modules. To test fewer
than six modules, ignore the setup information for the extra modules.
To avoid signal delays due to the test cables, use only coaxial cables of the same
length and type.
This procedure checks the skew between multiple VX4792 Arbitrary Waveform
Generator modules within the same mainframe.
Electrical Characteristic Checked: Main Outputs, Skew Between Modules,
Threshold level, on page E–3.
Equipment Required: Four 50 coaxial cables (same length) and a 4-trace
oscilloscope.
Prerequisites: The instrument must meet the prerequisites listed on page F–3.
Procedure:
1. Install VX4792 Arbitrary Waveform Generator modules into mainframe:
a. With the VXIbus mainframe turned off, install the additional VX4792
Arbitrary Waveform Generator modules into adjacent slots (see page 1–3
for instructions). For example, if the first instrument module is installed
into slots 1 and 2, install the next module into slots 3 and 4.
b. Turn on the VXIbus mainframe.
2. Install test setup and set test equipment controls (see Figure F–19):
a. Connect oscilloscope to first VX4792 Arbitrary Waveform Generator
module (slots 1 and 2): Connect the WAVEFORM OUTPUT from the
first module (slots 1 and 2) through a coaxial cable to the oscilloscope
CH1 vertical input.
b. Connect oscilloscope to second VX4792 Arbitrary Waveform Generator
module (slots 3 and 4): Connect the WAVEFORM OUTPUT from the
second module (slots 3 and 4) through a coaxial cable to the oscilloscope
CH2 vertical input.
c. Connect oscilloscope to third VX4792 Arbitrary Waveform Generator
module (slots 5 and 6): Connect the WAVEFORM OUTPUT from the
third module (slots 5 and 6) through a coaxial cable to the oscilloscope
CH3 vertical input.
d. Connect oscilloscope to fourth VX4792 Arbitrary Waveform Generator
module (slots 7 and 8): Connect the WAVEFORM OUTPUT from the
fourth module (slots 7 and 8) through a coaxial cable to the oscilloscope
CH4 vertical input.
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