Fluke 1560 Black Stack, Руководство пользователя

Страница: 124 / 187

SELECT A DEVICE TO CALIBRATE
>SPRT 1
TCS 2
PRTS 3
After the device is selected a new window appears showing the parameters and
functions available from the device. New values can be entered for the parame-
ters using the numeric buttons and pressing
ENTER . The
UD
buttons can be
used to move between parameters.
CALIBRATE DEVICE: SPRT
0 ADJ: 0.0
100 ADJ: 0.0
400 ADJ: 0.0
CAL DATE: 05-21-96
SER NUM: A26123
For the 2560/2567 SPRT module the list of parameters includes 0_ADJ ,
100_ADJ , and 400_ADJ as described above. The list also includes the calibra-
tion date (CAL DATE) parameter, used to record the date the module was cali-
brated, and the (SER NUM) parameter, used to record the serial number of the
module.
7.4.3 Calibration Procedure (2560)
Calibration requires adjustment of the 0_ADJ , 100_ADJ , and 400_ADJ parame-
ters at three specific input resistances. If the resistances used are approximately
0
Ω
, 100
Ω
and 400
Ω
respectively the adjustments are independent and the pro-
cedure is simple. The order in which the adjustments are performed is impor-
tant. The adjustment of the
400_ADJ parameter must be performed last as the
adjustments of 0_ADJ and 100_ADJ affect the measurement at 400
Ω
but
400_ADJ does not affect the measurements at 0
Ω
and 100
Ω
. Either channel
can be used for calibration. Set the conversion type to R(
Ω
) to display resis-
tance (see Section 5.2.1.1 ). The accuracy required of the resistance standards is
1/4 of the instrument accuracy: that is ±0.00012
Ω
at 0
Ω
, ±0.0005
Ω
(5 ppm) at
100
Ω
, and ±0.002
Ω
(5 ppm) at 400
Ω
. The recommended procedure is as
follows:
117
7 2560/2567 SPRT Module
Calibration