Model 2750 Multimeter/Switch System Service Manual Calibration 2-7
Model 2750 Calibration
3. Choose which of the calibration tests summarized in Table 2-2 you want to run at
the CAL: RUN prompt. Use the up and down range keys to scroll through the
options; select your choice by pressing ENTER.
Front panel short and open calibration
At the Model 2750 prompt for a front panel short, do the following:
1. Connect the Model 8610 low-thermal short to the instrument front panel INPUT
and SENSE terminals as shown in Figure 2-1. Make sure the INPUTS button is not
pressed in so that the front inputs are selected. Wait at least three minutes before
proceeding to allow for thermal equilibrium.
Figure 2-1
Low-thermal short connections
NOTE Be sure to connect the low-thermal short properly to the HI, LO, and SENSE ter-
minals. Keep drafts away from low-thermal connections to avoid thermal drift,
which could affect calibration accuracy.
2. Press ENTER to start short-circuit calibration. While the unit is calibrating, it will
display:
CALIBRATING
Tab le 2- 2
Comprehensive calibration procedures
Procedure Menu Choice Procedures
Full calibration
DCV, DCI, and ohms
ACV and ACI
ALL
DC
AC
All comprehensive calibration steps
(DC and AC).
DC voltage, DC current, and resistance
calibration.
AC voltage and AC current calibration.
MODEL 2750 MULTIMETER/SWITCH SYSTEM
INTEGRA SERIES
SLOT 1
SLOT 3
SLOT 4
SLOT 5
SLOT 2
3A, 250V
MATH
OUTPUT
RATIO
CH AVG
CONT
PERIOD SENSOR
OCOMP
DCV
DCIACV
ACI
Ω
2
Ω
4
FREQ
TEMP
RANGE
AUTO
RANGE
EXIT ENTER
DIGITS RATE
RELFILTER
TRIG
EX TRIG
STORE
RECALL
OPEN
LIMITS ON/OFFDELAY
DRYCKT
SAVE SETUP
CONFIG HALT
TYPE
LSYNC
TEST
MONITOR
STEP SCAN
CH-OFF
CARD
CLOSE
RS-232
GPIB
POWER
SHIFT
LOCAL
!
F
500V
PEAK
FRONT/REAR
HI
INPUT
LO
SENSE
Ω 4 WIRE
INPUT
350V
PEAK
1000V
PEAK
R
CAT I
AMPS
Model 8610
Low-thermal
short
S+
HI
S- LO
Model 2750
LO
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