37
Make sure the previous adjusting point has been saved before shifting to another one.
9.3 Adjusting Resistance Source
Step 1:
Using the key
〔
OHM
〕
, select resistance
function.
Connect the lead cables for
measurement to the standard digital meter as
shown in Figure13.
Step 2:
Pressing the
〔
RANGE
〕
key selects the
right range.
Step 3:
The LCD shows “0” or “F” symbol on the
assistance districts part and the calibrator is ready Figure 13 Adjusting resistance source
for the zero-point or F-point adjustment of source functions. The LCD shows the highest five digits and its unit
in the main districts part and the lowest digit of the calibrated sourced value in the right of the assistance
districts part respectively.
Step 4:
Read the calibrator output on the calibration standard. Then, using the pair of
〔
〕
/
〔
〕
keys, adjust
the reading so that it matches the measured CAL adjustment setpoint. In the CAL mode, the right pair of
〔
〕
/
〔
〕
keys are used to increase or decrease the least-significant digit, (the digit in the right of the LCD
assistance districts part).
Step 5:
Press the
〔
25/100%
〕
key to save the CAL adjustment reading .
Step 6:
Pressing the
〔
ZERO
〕
key shifts to the next setpoint.
Step 7:
By repeating steps 3 to 6, you can adjust all the adjustment point assigned to that range.
Step 8:
By repeating steps 2 to 7, you can adjust all ranges of the DC voltage source function.
AUX
Hi
NORMAL
Lo
SCOPE
TRIG
OUT
Hi
Lo
digital meter
(
KEITHLEY2000
)
standard source
（5520A）
TECPEL
