Fluke 45 - Page 82

45
Service Manual
4-12
chapter.) In the following procedure, the Fluke 5700A Multifunction Calibrator is used
as the ohms source, with input values of 190 Ω, 1.9 kΩ, 19 kΩ, 190 kΩ, and 1.9 MΩ.
1. If the meter is already in calibration mode, press the
U or T button to select Ω
calibration. Otherwise, select calibration mode first (press Cal Enable button for
three seconds), then select Ω calibration by pressing the
U button six times.
2. Connect the ohms source to the meter in a four-wire configuration. Refer to Figure
4-1.
3. On the 5700A, select 2-wire compensation ON, with external sense. Then program
the 5700A for the output in step 25 of Table 4-5.
4. Edit the meter prompt display to read the same value as the 5700A output display.
5. On the meter, press the
E button to calibrate this step. Then continue with steps
26 through 29 in Table 4-5.
CAL
ENABLE
POWER
AUTO
2ND
MN MX
RATE
dB
REL
REF# LOCAL
THRESH ADDR BAUD
HOLD
LO
HI
COMP
A
A
V
FREQ
V
REF
REMOTE
EXT TRG
SMF MAX
MIN
dB
HOLD
REL
AUTO
mA
mVDCAC
Mk
Hz
UNCAL
mA
mV
DC AC
Hz
Mk
5700A
UUT
COMP
COMP
EX SNS
: ON
EX GRD
: OFF
2-WIRE
COMP
ON
CAUTION
USE CONNECTIONS WITH
EXPOSED PLUG TIPS FOR
THE OHMS FUNCTION ONLY.
HI
HI
LO
LO
HI
SENSE
V
AUX
CURRENT
GUARD GROUND
WIDEBAND
5700A
NC
NC
OUTPUT
V A
Ω
Ω
45
DUAL DISPLAY MULTIMETER
1000V CAT
FUSE F1
500 mA
F 250V
FUSED
600V CAT
10A
100
mA
V
COM
qb18f.eps
Figure 4-1. Four-Wire Configuration