Tektronix 2335, Инструкция по эксплуатации, Страница: 45 / 104

OPERATOR'S CHECKS AND ADJUSTMENTS
INTRODUCTION
To verify the operation and accuracy o f your instru­
ment, perform the foiiowing check and adjustment pro­
cedures before making a measurement. If adjustments are
required beyond the scope of these operator's checks
and adjustments, refer the instrument to a qualified service
technician for calibration. Before proceeding w ith these
instructions, verify that the LINE VO LTAG E SELECTOR
switch is placed in the proper position and that the correct
line fuse is installed for the ac-power-in put source voltage
to be used. Refer to the "Preparation fo r Use" information
in this manual for procedures relating to ac-power-in put
source voltage and fuse selection. V erify that the POWER
switch is OFF (push button out), then plug the power cord
into the ac-power-in put source outlet. Push in the POWER
switch (ON) to apply power to the instrument and allow
sufficient time for warm-up before starting these checks
and adjustments. Warm-up time required to meet all the
instrument's specification is 20 minutes.
TRACE ROTATION
1. Preset instrument controls and obtain a Norma!
Sweep Display (refer to "Instrum ent Fam iliarization").
2. Use the Channel 1 POSITION control to move the
baseline trace to the center horizontal graticule line.
NOTE
Normally, the resulting trace w ill be parallel to the
center horizontal graticule tine, and the Trace
Rotation adjustment should not be required.
3. If the resulting trace is not parallel to the center
horizontal graticule line, use a small-bladed screwdriver to
adjust the TRACE ROTATION control (see Figure 3)
and align the trace w ith the center horizontal graticule line.
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2335 Operators