Fluke 74X Series, Calibration Manual

Page: 41 / 44

Calibration
33
Caution
Do not force a dual banana plug between any two jacks in the
horizontal orientation (see Figure 16). Doing so will damage the
jacks. Use the supplied jumper wires. You can use a dual banana
plug in the vertical orientation.
NOT OK
V
RTD
MEAS SOURCE
mA mA
RTD
V
300V
MAX
30V MAX
TC
V
RTD
MEAS SOURCE
mA mA
RTD
V
300V
MAX
30V MAX
TC
V
RTD
MEAS SOURCE
mA mA
RTD
V
300V
MAX
30V MAX
TC
OK
OK
gb16f.eps
Figure 16. Proper and Improper Jumper Use
4. Again, do as the display illustrates: remove the shorting bar, connect the test leads
from the right side jacks to the output of the dc source.
5. The display requests an input of
100.000 mV
dc but shows an allowed range of
90.0
≤
100.000 mV
≤
110.0
. Apply the requested input, or apply an input in the allowed
range, and use the numeric keys to enter the value into the UUT, followed by
[ENTER]. Press the
Continue
softkey.
6. Apply the next requested value as in step 5. Press the
Continue
softkey.
Warning
Some of the voltages required for calibration are dangerous.
To avoid injury or death from electric shock, do not touch live
conductors during high voltage calibration. Put the source
device into Standby after each calibration step.
7. Continue applying voltages as requested. Make sure you follow the hookup
instructions each time because the input jack configuration changes.
8. When you complete the last point in the subroutine, the display asks you if you want
to save the new constants. If you save the new constants, the calibration takes effect
and the
Calibration Status
counter is incremented and the date is updated. If you
discard the constants at this point, the calibration has no effect, the
Calibration
Status
counter is not incremented, and the date does not change.