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Verification Procedure
VITS 200
1. Turn On
a. Connect the
VITS 200 AC power cord to the variable autotransformer. Set the variac
for 120 volts. Set the mains Power switch for the variac to On.
b. Turn the
VITS 200 POWER ON.
c. Apply power to the test gear and allow the instruments to warm up as
specified by the manufacturer.
NOTE. Steps 2 through 5 store reference signals in the VM700A that are later
recalled during the performance verification.
2. Reference Gain and Line Tilt
a. Connect the output of the TSG–170D to Channel A of the VM700A.
Terminate the Ch. A loopthrough with a precision 75 W terminator.
b. Select the NTC7 Composite signal from the TSG–170D other signals,
Bar, Pulse, Mod Pulse & Mod Stairstep.
May have to scroll through Other Signals watching the VM700A Wfm
readout for NTC-7 Composite.
c. Store the NTC7 reference Bar & Line Time signal on the VM700A.
i.
Press Measure.
ii. Press BAR LINE TIME soft key (on screen).
iii. Press Average and Menu.
iv. Press Reference soft key.
v. Press Store (1) Reference soft key.
3. Reference Chroma-to-Luminance Gain and Delay
a. Store the NTC7 reference C–L Gain + Delay signal on the VM700A.
i.
Press Measure.
ii. Press Chrom Lum Gain Delay soft key (on screen).
iii. Press Average and Menu.
iv. Press Reference soft key.
Performance Verification
5–7
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