Introduction; Equipment Required For Verification; How To Verify - Fluke ScopeMeter 123 Service Manual

4.1 Introduction

Procedures in this chapter should be performed by qualified
service personnel only. To avoid electrical shock, do not
perform any servicing unless you are qualified to do so.
The test tool should be calibrated and in operating condition when you receive it.
The following performance tests are provided to ensure that the test tool is in a proper
operating condition. If the test tool fails any of the performance tests, calibration
adjustment (see Chapter 5) and/or repair (see Chapter 7) is necessary.
The Performance Verification Procedure is based on the specifications, listed in Chapter
2 of this Service Manual. The values given here are valid for ambient temperatures
between 18 °C and 28 °C.
The Performance Verification Procedure is a quick way to check most of the test tool's
specifications. Because of the highly integrated design of the test tool, it is not always
necessary to check all features separately. For example: the duty cycle, pulse width, and
frequency measurement are based on the same measurement principles; so only one of
these functions needs to be verified.

4.2 Equipment Required For Verification

The primary source instrument used in the verification procedures is the Fluke 5500A. If
a 5500A is not available, you can substitute another calibrator as long as it meets the
minimum test requirements.
•
Fluke 5500A Multi Product Calibrator, including 5500A-SC Oscilloscope
Calibration Option.
•
Stackable Test Leads (4x), supplied with the 5500A.
•
50Ω Coax Cables (2x), Fluke PM9091 (1.5m) or PM9092 (0.5m).
•
50Ω feed through terminations (2x), Fluke PM9585.
•
Fluke BB120 Shielded Banana to Female BNC adapters (2x), supplied with the
Fluke 123.
•
Dual Banana Plug to Female BNC Adapter (1x), Fluke PM9081/001.
•
Dual Banana Jack to Male BNC Adapter (1x), Fluke PM9082/001.
•
TV Signal Generator, Philips PM5418.
•
75Ω Coax cable (1x), Fluke PM9075.
•
75Ω Feed through termination (1x), ITT-Pomona model 4119-75.
•
PM9093/001 Male BNC to Dual Female BNC Adapter

4.3 How To Verify

Verification procedures for the display function and measure functions follow. For each
procedure the test requirements are listed. If the result of the test does not meet the
requirements, the test tool should be recalibrated or repaired if necessary.
Warning
Performance Verification

4.1 Introduction

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