Section 5—2465B/2467B Service
ADJUSTMENT PROCEDURE
INTRODUCTION
IMPORTANT-PLEASE READ BEFORE USING THIS PROCEDURE
The "Adjustment Procedure" is used to restore optimum performance or return the instrument to conformance with its
"Performance Requirements" as listed in the "Specification" (Section 1). As a general rule, these adjustments should be
performed every 2000 hours of operation or once a year if used infrequently.
PARTIAL PROCEDURES
This procedure is divided into subsections to permit
calibration of individual sections of the instrument when-
ever complete instrument calibration is not required. To
perform a partial procedure, first set the instrument as
directed in the Initial Setup Conditions at the beginning of
the section, then make any changes called for within the
procedure. Perform all steps within a subsection, both in
the sequence presented and in their entirety to ensure that
control settings will be correct for the following steps.
The adjustments in CAL 01, 02, 03, 06, 07 and 09
should be performed in numerical sequence; i.e., CAL 01
should be done before CAL 02, CAL 02 should be done
before CAL 03, etc. CAL 04, 05, and 08 are independent
of adjustments made in the other calibration routines. Per-
forming partial procedures when setting the automatic
cali-
bration constants
(i.e.,
only one or two of the CAL steps)
is not recommended and should only be done if the
cali-
bration constants set in the preceding steps are known to
be correct.
PREPARATION FOR ADJUSTMENT
It is necessary to remove the cabinet to do the Adjust-
ment Procedure. See the cabinet removal instructions in
the Maintenance section of this manual, Section 6.
All test equipment items required to do the complete
Adjustment Procedure are described in Table 4-1 at the
beginning of Section 4, Performance Check Procedure.
The specific items of equipment needed to do each sub-
section in this procedure are listed at the beginning of that
subsection.
BEFORE YOU BEGIN:
NOTE
When performing any of the automatic calibration
routines (CAL 01 through CAL 08), the CAL/NO CAL
jumper P501 must be moved to its CAL position
(between pins 2 and 3) before turning the power on.
When the desired calibration has been performed,
return the jumper to its NO CAL position.
a. Turn instrument Power on.
NOTE
The instrument MUST have a 20-minute warmup
period before making any adjustments. Performing
the adjustment procedure while the temperature is
drifting may cause erroneous calibration settings.
5-1
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