User Manual 9250
Portrayal 3-9
Adjustments
Introduction
This document contains the calibration procedure for the Model 9250.
Specifications are listed in Appendix A. The calibration procedures
that are described in this document are for use by qualified service
person only. Do not perform these procedures unless qualified to do
so. This procedure is intended to be used once before complete and
final performance verification to verify that the 9250 meets or exceeds
its published specifications.
Environmental
Conditions
The 9250 can operate from 0
°
C to 50
°
C. Calibration should be
performed under laboratory conditions having an ambient temperature
of 25
°
C,
±
5
°
C and at relative humidity of less than 80%. Turn on the
power to the 9250 and allow it to warm up for at least 30 minutes
before beginning the adjustment procedure. If the instrument has
been subjected to conditions outside these ranges, allow at least one
additional hour for the instrument to stabilize before beginning the
adjustment procedure.
Required
Equipment
Recommended equipment for calibration is listed in Table 3-5.
Instruments other than those listed may be used only if their
specifications equal or exceed the required minimal characteristics.
Also listed below are accessories required for calibration.
Table
33-5, Required Equipment
Instrument
Manufacturer
Model
DMM Keithley
2000
Oscilloscope LeCroy LT342
10MHz Reference
Oscilloqurz
10MHz
Counter/Timer Tabor
6030
Accessories
BNC to BNC cable
50
Ω
Feedthrough termination
Dual banana to BNC adapter