Tektronix 070-8462-03, Instruction Manual

Page: 125 / 271

Performance Verification
5–14
1735 HD High Definition Waveform Monitor
e. Check CH 1B, CH 2B, and CH 3B for a DC level of 0 V,
±
1 mV as
viewed on the 1735 HD.
f. Turn Off DC CPLG and select CLAMP.
g. Check CH 1B, CH 2B, and CH 3B for a DC level of 0 V,
±
1 mV as
viewed on the 1735 HD.
h. Select the A INPUT on the 1735 HD.
i. Check CH 1A, CH 2A, and CH 3A for a DC level of 0 V,
±
1 mV as
viewed on the 1735 HD.
j. Turn Off the CLAMP and return Gain to X1.
k. Connect the TSG 1001 G/Y output to the 1735 HD CH 1A INPUT.
l. Select CH 1A INPUT, INT REF, and TWO LINE Sweep.
m. Position the blanking level to the 0 V graticule line on the 1735 HD, and
turn the CLAMP On.
n. Check that the signal is clamped to within
±
100 mV of the 0 V graticule
line.
o. Remove the signal from the CH 1A INPUT, select EXT REF, and
THREE LINE Sweep.
14. Check Offset Operation
Requirement: CH 2 and/or CH 3 can be offset from CH 1 by
±
350 mV. CH B
can be offset from CH A by
±
350 mV.
a. Position the trace to the 0 mV line on the CRT.
b. Enter the MENU and select OFFSETS, then ENABLED. Exit the
MENU.
c. Use the VERTICAL Position to place the CH 1 INPUT trace on the
400 mV graticule line.
d. Check using the CH 2 and CH 3 OFFSET controls, that CH 2 and CH 3
can each be positioned to the +750 mV graticule line and to the +50 mV
graticule line.
e. Select DC CPLG, then select GND.
f. Select B INPUT and position the trace to the 400 mV line on the CRT.
g. Turn Off the GND and DC CPLG.
h. Select both A and B INPUTS on together.