Reference Calibration; Introduction; External Dmm Connections And Setup - Keysight Technologies BT2152B Operating And Service Manual

Reference Calibration

Introduction

The instrument features closed-case electronic calibration; no internal mechanical adjustments are
required. The instrument calculates correction factors based on reference values that you enter and
stores correction factors in non-volatile memory until the next calibration is performed.
Calibration Interval
The instrument should be calibrated on a regular interval as determined by the
schedule.
Calibration Considerations
The following equipment is recommended for calibration: 7½-digit DMM; Keysight 34470A
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(Run auto-calibration on the DMM prior to starting the reference calibration)
The calibration ambient temperature is stable and between 20 °C and 28 °C. Relative humidity is
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<80%.
If set, the correct password is required to enter calibration mode. The password is factory-set to 0
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(zero). You can change the password once calibration mode is entered to prevent unauthorized access
to the calibration mode (See
You can calibrate any one of the four calibrations steps independently of the other steps and then
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store those results. The other existing calibration values will not be affected.
A warm up time of 1 hour is required before the unit can be calibrated.
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External DMM Connections and Setup

The following figure illustrates the connections between the CAL connector on the rear panel of the
BT2152A/B and the DMM. Twisted interconnect wires of minimum length are recommended between
the instrument and the DMM to reduce settling and noise errors.
Keysight BT2152A/B Operating and Service Guide
CALibration:SECure:CODE
5 Verification and Calibration
maintenance
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