Tektronix WFM601, Руководство по обслуживанию, Страница: 95 / 304

Performance Verification
WFM 601 - Service Manual
4–7
Verification Procedure
1. Preliminary Setup
a. Connect the WFM
601 ac power cord to the variable autotransformer.
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 digital component television test
signal generator to the WFM 601 SER A input; terminate the remaining
side of the loop-through connector with a 300 MHz, 75 end-line
termination.
c. Connect a second serial digital output from the digital component
television test signal generator to the SER B input; terminate the
remaining side of the loop-through connector with a 300 MHz, 75
end-line termination.
d. Connect the digital component television test signal generator black
burst signal to the WFM 601 EXT REF connector. Connect a 75
end-line termination to the remaining side of the EXT REF loop-through
connector.
e. Turn the WFM 601 POWER ON.
f. Enter the CRT menu and adjust the controls for best viewing of the
display. Exit the CRT menu.
g. Set the WFM 601 front-panel controls and menu selections to the factory
settings by entering the PRESET menu and selecting FACTORY.
2. Check 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.
3. Check Trace Rotation Range and Graticule Illumination
REQUIREMENT – Rotation of + & – 1
°
from the horizontal.
a. Enter the CRT menu and select TRACE.
b. Position the trace to the graticule baseline.