Tektronix 1740A Series, Руководство пользователя

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Performance Verification
1740A/1750A/1760 – Series Service Manual
4–17
10. Voltage, Timing, and Vector Cursors
Requirement – Voltage Accuracy: 0.5%. Timing Accuracy: 0.5%, for
line rate sweeps. Vector Accuracy: Gain 1.5%, Phase 1
°
.
a. Set the VAC amplitude to 999.9 mV.
b. Vertically position the signal to range from the 100 IRE to the –40 IRE
graticules (1.0 V to the 0 V graticules PAL).
c. Enter the CURSOR menu (VOLT should be selected). If desired, press
the CLEAR MENU button (front panel) to remove the readout.
d. Use the appropriate bezel knob to set the Volt1 cursor to the 100 IRE
(1.0 V PAL) graticule.
e. Set the Volt2 cursor to the –40 IRE (0 V PAL) graticule.
f. Check – that the cursor reading is 140 IRE 0.7 IRE (1000 mV
5 mV PAL).
g. In the CURSOR menu select TIME.
h. Use the bezel knob to set the Time1 cursor to the 10
m
s graticule mark,
and set the Time2 cursor to the 110
m
s graticule mark. See Figure 4–4.
m
r
m m
Figure 4–4: Timing Cursor Check
i. Check – that the cursor reading is 100
m
s 0.5
m
s.
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