Tektronix WFM 601A, Service Manual

Page: 70 / 368

Performance Verification
4–6
WFM 601A, WFM 601E, & WFM 601M Service Manual
Performance Verification Procedure
Perform the following steps to verify the performance of a waveform monitor:
1. Preliminary Setup
a. Connect the waveform monitor AC power cord to the variable autotrans-
former. Set the mains Power switch for the autotransformer to On. Set
the autotransformer to the local nominal mains voltage (110 V or 220 V).
b. Connect a serial digital output from the serial component signal
generator to the waveform monitor SER A input. Terminate the
remaining side of the loop-through connector with a high-frequency,
75
W
end-line termination.
c. Connect a second serial digital output from the serial component signal
generator to the SER B input. Terminate the remaining side of the
loop-through connector with a high-frequency, 75
W
end-line termina-
tion.
d. Connect the digital component television generator black burst signal to
the waveform monitor EXT REF connector. Connect a 75
W
end-line
termination to the remaining side of the EXT REF loop-through
connector.
e. Turn the waveform monitor front-panel POWER switch on.
f. Enter the CRT menu and adjust the bezel controls for best viewing of the
display. Exit the CRT menu.
g. To set the waveform monitor to the factory settings, press the PRESET
button, select FACTORY, and press the RECALL bezel button.
2. Power Supply Operation
REQUIREMENT – Stable operation over an AC input range of 90 – 250 V.
a. Vary the autotransformer from low-line to high-line voltage (90 – 132 V
for 110 V, or 180 – 250 V for 220 V operation).
b. CHECK – for stable instrument operation over the prescribed voltage
range, 90 – 132 V for 110 V, or 180 – 250 V for 220 V.
c. Set the autotransformer to the nominal mains voltage.