Model 2700 Verification; Verifying Dc Voltage; Figure 1-1 Connections For Model 2700 Dc Volts Verification - Keithley 2700 Service Manual

1-8 Performance Verification
Model 2700 verification
Perform these tests to verify accuracy using the Model 2700 front panel terminals.

Verifying DC voltage

Check DC voltage accuracy by applying accurate voltages from the DC voltage calibrator to
the Model 2700 INPUT jacks and verifying that the displayed readings fall within specified
limits.
CAUTION
Follow these steps to verify DC voltage accuracy:
1.
NOTE
Figure 1-1
Connections for Model 2700 DC volts verification
Model 2700
Model 2700 Multimeter / Data Acquisition System
MATH O U T P U T RATIO CH AVG CONT OCOMP
Ω2 Ω4
ACI
SHIFT DCV ACV DCI
DELAY HOLD LIMITS ON/OFF TYPE MONITOR
LOCAL
EX TRIG TRIG STORE RECALL FILTER REL
POWER
SAVE SETUP CONFIG HALT TEST LSYNC
OPEN CLOSE STEP SCAN DIGITS RATE
2.
3.
4.
Do not exceed 1000V peak between front terminals INPUT HI and
INPUT LO because instrument damage may occur.
Connect the Model 2700 HI and LO INPUT jacks to the DC voltage calibrator as
shown in Figure 1-1. Make sure the INPUTS switch is set to the FRONT position.
Use shielded, low-thermal connections when testing the 100mV and 1V ranges to
avoid errors caused by noise or thermal effects. Connect the shield to the calibra-
tor's output LO terminal.
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
Input
GPIB RS-232
EXIT ENTER
LO
Select the DC volts function by pressing the DCV key, and set the Model 2700 to the
100mV range.
Set the calibrator output to 0.00000mV DC, and allow the reading to settle.
Enable the Model 2700 REL mode. Leave REL enabled for the remainder of the DC
volts verification tests.
Calibrator (Output DC Voltage)
Input HI
Output HI
Output
LO
Note: Use shielded, low-thermal cables
for 100mV and 1V ranges.