Verifying Dc Voltage - Keithley 2015 Service Manual

1-8 Performance Verification

Verifying DC voltage

Check DC voltage accuracy by applying accurate voltages from the DC voltage calibrator to
the Model 2015 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 DC volts verification
Model 2015
REM STEP SCAN CH1 CH2 CH3 CH4 CH5 CH6 CH7
TALK
LSTN
SRQ
SHIFT
TIMER
HOLD TRIG FAST MED SLOW REL FILT AUTO ERR
dBm
MATH T H D dB CONT
Ω2 Ω4
SHIFT DCV ACV DCI ACI
DELAY HOLD LIMITS ON/OFF TEST
CAL
LOCAL
EX TRIG TRIG STORE RECALL FILTER REL
POWER
SAVE SETUP
CONFIG HALT GPIB RS232
SOURCE MEAS STEP SCAN DIGITS RATE
THD
Do not exceed 1100V peak between INPUT HI and INPUT LO because
instrument damage may occur.
Connect the Model 2015 HI and LO INPUT jacks to the DC voltage calibrator as shown
in Figure 1-1.
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 calibrator's
output LO terminal.
SENSE
Ω 4 WIRE INPUT
HI
MATH
CH8 CH9 CH10
REAR
4W
350V 1000V
BUFFER STAT !
PEAK PEAK
2015 THD MULTIMETER
LO
500V
PERIOD TCOUPL
PEAK
INPUTS
FREQ TEMP
RANGE
F R
AUTO
FRONT/REAR
3A 250V
AMPS
RANGE
EXIT ENTER
Input HI
Output HI
Input
LO
Output
LO
Note: Use shielded, low-thermal cables
DC Voltage Calibrator
for 100mV and 1V ranges.