Adjustment Procedures
4- 2
SDA 601 Serial Digital Analyzer
Adjustment Procedures
To ensure greatest accuracy of the SDA601 Signal Level meter over the entire
range of operating temperatures, perform this two-part procedure once every
twelve months. Please read completely through the following procedure before
attempting to adjust the SLM.
The first “pass”
must
be conducted on a “cold” instrument at room temperature
(approximately 20
_
C = 68
_
F). For best results, leave the SDA601 switched
Off overnight and perform steps
4a
through
4g
immediately after switching the
instrument On. The second pass (step
6
) must be conducted after the instrument
has operated (On, but not Watching) at an elevated ambient temperature
(approximately 50
_
C = 122
_
F) for at least one hour.
The instrument software saves and uses the “cal factors” from the two most
recent “Calibrate SLM” sequence; thus, for proper adjustment, both parts of this
procedure must be completed
in order
(cold, then hot).
1.
Connect the equipment as shown in Figure 4--1.
Figure 4- 1: A Setup for SLM Adjustment
Adjust SLM (Signal Level
Meter)
Содержание SDA601
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