Table of Contents
Advertisement
Verification and Calibration
Introduction
This appendix includes verification and calibration procedures for the HP 66311A Mobile
Communications DC Source. Instructions are given for performing the procedures either from the front
panel or from a controller over the HP-IB.
The verification procedures do not check all the operating parameters, but verify that the dc source is
performing properly. Performance Tests, which check all the specifications of the dc source, are given in
the applicable dc source Service Manual.
IMPORTANT: Perform the verification procedures before calibrating your dc source. If the dc source
passes the verification procedures, the unit is operating within its calibration limits and
does not need to be re-calibrated.
Equipment Required
The equipment listed in the following table, or the equivalent to this equipment, is required for
verification and calibration.
Equipment
Digital Voltmeter
1
Current Monitor
Load Resistor
(3 W min. TC=20ppm/°C)
Power Supply
HP-IB Controller
1
The 4- terminal current shunt is used to eliminate output current measurement error caused by voltage drops in the
load leads and connections. It has special current-monitoring terminals inside the load connection terminals. Connect
the voltmeter directly to these current-monitoring terminals.
Test Setup
Figure B-1 shows the setup for the tests. Be certain to use load leads of sufficient wire gauge to carry the
full output current (see chapter 3).
Table B-1. Equipment Required
Characteristics
Resolution: 10 nV @ 1 V
Readout: 8.5 digits
Accuracy: >20 ppm
15 A (0.1 Ω), ±0.04%, TC=5ppm/°C
400 Ω (verification.)
800 Ω (calibration)
8 V @ 5 A
Full HP-IB capabilities
Recommended Model
HP 3458A
Guildline 9230/15
HP p/n 0811-2878
HP p/n 0811-0600
HP 6611C or HP 6631B
HP Series 200/300 or equivalent
B
123
Advertisement
Table of Contents
