Keithley 2015, Service Manual

Page: 22 / 158

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 Do not exceed 1100V peak between INPUT HI and INPUT LO because
instrument damage may occur.
Follow these steps to verify DC voltage accuracy:
1. Connect the Model 2015 HI and LO INPUT jacks to the DC voltage calibrator as shown
in Figure 1-1.
NOTE 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.
Figure 1-1
Connections for DC volts verification
Output HI
Output
LO
2015 THD MULTIMETER
RANGE
!
F
500V
PEAK
FRONT/REAR
3A 250V
AMPS
HI
INPUT
LO
SENSE
Ω
4 WIRE
INPUTS
350V
PEAK
1000V
PEAK
AUTO
SHIFT
LOCAL
POWER
RANGE
R
SHIFT
CH1 REM
TALK
LSTN
SRQ
STAT REL FILT
4W
BUFFER
MATH
REAR SCAN
TIMER
STEP CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10
HOLD TRIG FAST MED SLOW AUTO ERR
EXIT ENTER DIGITS RATE
REL FILTER
TRIG
EX TRIG STORE RECALL
SOURCE MEAS
DCV DCI
MATH T H D
dBm
ACV ACI
Ω
2
Ω
4 FREQ TEMP
dB
CONT PERIOD TCOUPL
LIMITS ON/OFF DELAY HOLD
SAVE SETUP CONFIG HALT
TEST
RS232 GPIB
CAL
STEP SCAN
Model 2015
Input
LO
Input HI
DC Voltage Calibrator
Note: Use shielded, low-thermal cables
for 100mV and 1V ranges.
THD