BRIEF CHECKING PROCEDURE
3 - 1
3 BRIEF CHECKING PROCEDURE
3.1
General information
This procedure is intended to verify the instrument’s functions with a minimum of
test steps and actions required.
It is assumed that the operator doing this test is familiar with this kind of
instruments and their characteristics.
WARNING:
Before turning on the instrument, ensure that it has been
installed in accordance with the instructions mentioned in
Chapter 2 of the Operation Guide.
NOTE: The procedure does not verify every facet of the instrument’s calibration;
rather, it is concerned primarily with those parts of the instrument that are
essential to measurement accuracy and correct operation.
Removing the instrument covers is not necessary to perform this
procedure. All checks are made from the outside of the instrument.
If this test is started a few minutes after turning on the instrument, test steps may
be out of specification, due to insufficient warm-up time. Be sure to allow the full
warm-up time of 30 minutes (under average conditions).
The check is set up in a logical sequence. For a complete check of every facet of
the instrument’s calibration, refer to the ‘PERFORMANCE TEST’ section in
Chapter 4 of this Reference Manual (for qualified persons only).
The check can be used for different instrument types. Where differences exist,
they are indicated (e.g., in the vertical channels). Those test steps can be
skipped.
3.2
Preliminary settings of the controls
For ease of reading the following abbreviations are used:
CW
= Clockwise (rotation direction of a control)
CCW = Counter Clockwise (rotation direction of a rotary control)
CRT
= Cathode Ray Tube (the oscilloscope’s viewing area)
MTB
= MAIN TB
DTB
= DELAYED TIMEBASE, DEL’D TB