Tektronix WFM601, Руководство по обслуживанию

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Performance Verification
WFM 601 - Service Manual
4–9
f. Remove the ground connection and the frequency counter probe from
A3R274.
6. Check Timing and Linearity
REQUIREMENT – Sweep Timing Accuracy: 5
m
s/Div. (1 Line), 10
m
s/Div.
(2 Line), 0.2
m
s/Div. (1 Line + MAG), 1.0
m
s/Div. (2 Line + MAG), 1%.
Sweep Linearity: 1 Line and 2 Line sweeps unmagnified or magnified, 1%.
a. Enter the CONFIG menu and select CALIBRATE.
b. Select CAL SIG ON.
c. Push the SWEEP button several times, or until the LINE indicator
comes on and there is a display of approximately 1 full cycle per major
division (2-Line Sweep).
d. CHECK – for one cycle of calibrator signal per major division
0.5 minor division over the center 10 divisions.
e. Turn On the MAG SWEEP.
f. CHECK – for one cycle of calibrator signal per 10 major divisions
0.5 minor division over the center 10 divisions.
g. CHECK – both ends of the magnified sweep for one cycle of calibrator
signal per 10 major divisions 0.5 minor division over the center
10 divisions.
h. Turn Off the MAG SWEEP and select 1 LINE SWEEP (5
m
S/Div), Line
indicator on and approximately 1 cycle/2 divisions.
i. CHECK – for one cycle of calibrator signal per two major divisions
1 minor division over the center 10 divisions.
j. Press CONFIG menu to turn the calibrator signal off.
k. Select the high frequency Timing Signal (2.5 MHz) from the serial
component test generator.
l. Turn On the MAG SWEEP.
m. CHECK – for one cycle per 2 divisions 0.5 minor division.
n. Turn Off the MAG SWEEP.
7. Check Sweep
REQUIREMENT – Sychronized sweep of approximately 12 divisions.
a. Select the color bar signal from the serial component test generator.