Tektronix VITS 200 Instruction Manual page 144

VITS 200
i. NOTE – the Marker Reference Level readout.
j. Adjust the spectrum analyzer External Attenuation Amplitude by the
amount noted in the previous step.
k. On the spectrum analyzer select the Input menu — External Atten/Ampl.
Note: The Marker Reference Level Readout should now be 0.00 dBm.
l. Connect the precision high-frequency terminator to the Device Under
Test connector on the RF Bridge.
m. CHECK – that the frequency response from 0 MHz to 5 MHz is
w40 dBm.
n. Return the spectrum analyzer Frequency Marker to 5 MHz if it was
moved.
o. Remove the precision high-frequency terminator from the RF Bridge.
p. Connect the Device Under Test connector on the RF Bridge to the
VITS 200 PROGRAM IN.
q. CHECK – that the Marker Reference Level readout on the spectrum
analyzer is w36 dBm down.
r. Connect the precision high-frequency terminator to the
VITS 200 PROGRAM OUT.
s. Set the
VITS 200 to Bypass.
CHECK – that the Marker Reference Level readout is w36 dBm down.
t.
u. Set the
VITS 200 to Operate mode.
v. Remove the precision high-frequency terminator from the
VITS 200 PROGRAM OUT.
w. Connect the Device Under Test connector on the RF Bridge to the
VITS 200 PROGRAM OUT.
x. CHECK – that the Marker Level readout is w36 dBm down.
y. Connect the Device Under Test connector on the RF Bridge to the
VITS 200 MONITOR OUT.
z. CHECK – that the Marker Level readout is w36 dBm down.
aa. Remove the twelve screws that secure the
VITS 200 top cover.
Performance Verification
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