Figure 2-3 Connections For Dc And Ac Amps Calibration; Table 2-5 Dc Current Calibration Summary - Keithley 2700 Service Manual

2-10 Calibration
DC current calibration
After the 1MΩ resistance point has been calibrated, the unit will prompt you to apply 10mA.
Follow these steps for DC current calibration:
1.
Figure 2-3
Connections for DC and AC amps calibration
Model 2700
Model 2700 Multimeter / Data Acquisition System
RATIO CH AVG CONT OCOMP
MATH O U T P U T
Ω2 Ω4
SHIFT DCV ACV DCI ACI
HOLD MONITOR
DELAY LIMITS ON/OFF TYPE
LOCAL
EX TRIG TRIG STORE RECALL FILTER REL
POWER
SAVE SETUP CONFIG HALT TEST LSYNC
OPEN CLOSE STEP SCAN DIGITS RATE
2.
NOTE
Table 2-5
DC current calibration summary
Calibration step
10mA
100mA
1A
Connect the calibrator to the AMPS and INPUT LO terminals of the Model 2700 as
shown in Figure 2-3.
Integra Series
SENSE
INPUT
Ω 4 WIRE
HI
350V 1000V
!
PEAK PEAK
LO
500V
PERIOD SENSOR
PEAK
INPUTS
FREQ TEMP
RANGE
F R
CH-OFF CARD
AUTO
FRONT/REAR
3A 250V
AMPS
RANGE
GPIB RS-232
EXIT ENTER
Calibrate each current step summarized in
• Set the calibrator to the indicated DC current, and make sure the unit is in
OPERATE.
• Make sure the Model 2700 display indicates the correct calibration current.
• Press ENTER to complete each step.
• Allow the Model 2700 to finish each step.
If you are performing DC-only calibration, proceed to "Setting calibration dates
and saving calibration."
Calibrator current
10.00000mA
100.0000mA
1.000000A
DC and AC Current Calibrator
Input
LO
Output HI
Amps
Output
Note: Be sure calibrator is set for
LO
normal current output.
Table 2-5. For each step:
Allowable range
9mA to 11mA
90mA to 110mA
0.9A to 1.1A