Tektronix VITS 200 Instruction Manual page 145

Ntsc vits inserter
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Performance Verification
5–30
ab. On the Inserter board move J32 to pins 2 & 3 (disables the DAC clock).
Place the lid over the instrument but do not replace the screws.
ac. Connect the Device Under Test connector on the RF Bridge to the
VITS 200 TEST SIGNAL output.
ad. CHECK – that the Marker Level readout is w36 dBm down.
ae. Move J32 back to pins 1 & 2.
af. Connect the Device Under Test connector to the
VITS 200 EXT 1 input.
ag. CHECK – that the Marker Level readout is w36 dBm down.
ah. Connect the Device Under Test connector to the
VITS 200 EXT 2 input.
ai. CHECK – that the Marker Level readout is w36 dBm down.
aj. Connect the Device Under Test connector to the
VITS 200 EXT 3 input.
ak. CHECK – that the Marker Level readout is w36 dBm down.
al. Connect the Device Under Test connector to the
VITS 200 EXT 4 input.
am.CHECK – that the Marker Level readout is w36 dBm down.
an. On the Controller board move J55 and J56 to their respective 2 & 3 pins.
ao. Connect the Device Under Test connector to the
VITS 200 BLACK BURST output.
ap. CHECK – that the Marker Level readout is w36 dBm down.
aq. Remove the RF Bridge from the
VITS 200 BLACK BURST output.
ar. Move Controller board jumpers J55 and J56 back to pins 1 & 2.
Move Inserter board jumper J32 back to pins 1 & 2.
as. Select External Atten/Ampl from the spectrum analyzer's Input menu.
at. Set the spectrum analyzer External Attenuation back to 0 dBm.
41. Test Signal Spurious Signals
REQUIREMENT — u55 dB down.
a. Set the following on the spectrum analyzer:
VITS 200

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