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Maintenance
43
Resistance
SOURCE
Hi
Hi
mA
120mA MAX
ALL TERMINALS 42V
PEAK MAX TO GND.
250V F 125mA
FUSE
MAX
22mA
42V MAX
28V
Lo
Lo
MEASURE
I+
I-
Guard
Hi
Lo
Ω
Guard
Calibrated instrument
DANGER-HIGH VOLTAGE
I+
I-
Guard
Hi
Lo
Apply
DCA.
Measure DCV.
Procedure
1
Before turning on the instrument, connect it and the standard equipment.
2
Warm up the instrument and standard equipment.
3
Press the [NEXT ENTER] key with the [ZERO CLR] key pressed.
"SP FC" and "End" are displayed.
4
Press [ ] or [ ] until "End" on the lower line changes to "SourCE."
5
Press [NEXT ENTER] to display the calibration screen for generation.
mV
Value
recommended
for the selected
range
6
Select one of the generation functions (DCV, DCA,
Ω
) using the [FUNCTION] key
and press [RANGE] to select the range to calibrate (see page 24). Since each range
is calibrated for two points, "FS" and "0" (for resistance, 4 points), 2 values (4 for
resistance) must be output from this instrument. The recommended value for the
"FS" calibration point appears at the lower line of the display first.
For DCV or DCA
7
Press the [SOURCE ON] key to output the value from the instrument.
mV
Value
recommended
for "0" calibration
point
8
Read the output value from the instrument displayed on the standard equipment
(DMM), and then input the value into the instrument, and press [NEXT ENTER] to
confirm it.
mV
Enter the
reading
given by
the standard
9
Press [24V OUT] to toggle the function from "FS" to "0," and repeat step 8 for the
remaining calibration point referring to the recommended value shown on the lower
line.
10
Press the [HOLD] key to write the calibrated value to the EEPROM of the
instrument. Perform this operation for each range.
11
Repeat steps 6 to 10 for each range.
For
Ω
Ω
Ω
Ω
Ω
(Be sure to make a check of the resistance generation function
before calibration.)
Ω
Value
recommended
for the selected
range
7
Press [SOURCE ON] to output the value from the instrument. Feed the
recommended current (see page 46) from the standard equipment (generator).
Ω
Enter the
calculated
resistance
value
8
Read the output voltage from the instrument displayed on the standard equipment
(DMM), and then calculate V/I. Input the calculated result into the instrument, and
press the [NEXT ENTER] key to confirm it. To improve the accuracy of
calculation, it is recommended that you use a DMM to measure the current
generated by the standard equipment.
Ω
9
Press [24V OUT] to switch the function from "FS" to one of the remaining
adjustment points, "0," "-0," or "-FS," and repeat step 8 for each of them referring
to the recommended value shown on the lower line.
Free Datasheet http://www.datasheet-pdf.com/