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Introduction
Write Enable
CAL CONSTANTS
Closed-Cover
Electronic
Calibration
WARNING
Hewlett-Packard
Calibration Services
Calibration Interval
HP E1563A and E1564A
This chapter contains procedures for adjusting the calibration constants in
the HP E1563A and HP E1564A digitizer. See the section titled
"Calibration Interval" for recommendations on time intervals.
You must set the module's "FLASH" and "CALIBRATION CONSTANTS"
switches to the "Write Enable" position before you perform any adjustment.
This allows modified calibration constants to be stored in memory when you
execute the CAL:STORe command.
The HP E1563A and HP E1564A Digitizers feature closed-cover electronic
calibration. There are no internal mechanical adjustments. You input the
CAL:VALue <voltage> command and the digitizer will measure the applied
voltage when performing a zero or a range gain calibration, then calculate
correction factors based on this known input reference value. You store the
new correction factors in non-volatile memory using the CAL:STORe
command. (Non-volatile memory does not change when power is turned off
or after a remote interface reset.)
Do not perform any of the following adjustments unless you are
a qualified, service-trained technician, and have read the
WARNINGS and CAUTIONS in Chapter 1 (and the Warnings and
safety information preceding chapter 1 on page 4). Adjustment
procedures should be performed in the order shown in this
manual.
Contact your local HP Service Center for a low cost recalibration when your
digitizer is due for calibration. Both the HP E1563A or HP E1564A
digitizer is supported on automated calibration systems which allow us to
provide this service at competitive prices.
The HP E1563A and HP E1564A digitizer should be calibrated on a regular
interval determined by the measurement accuracy requirements of your
application. A 90 day interval is recommended for the most demanding
applications, while a 1 year or 2 year interval may be adequate for less
demanding applications. HP does not recommend extending calibration
intervals beyond 2 years in any application.
Adjustments
HP E1563A and E1564A Adjustments
Appendix E
157
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