Troubleshooting - Fluke 1523 Technical Manual

8 Troubleshooting

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Problem
"Battery Symbol" is displayed
"Waiting for Data" is
displayed when a probe is
plugged in.
"locked" is displayed
Cannot change INFO-CON
settings using the 9940
software or manually through
the serial port.
The instrument display is
blank when it should show
measurements.
While attempting to measure
resistance the display shows
an incorrect or erratic value.
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15
10 20
5 25
0 30
Solution
The battery is low and needs to be changed. When this symbol appears,
the batteries should be replaced to ensure the accuracy of readings.
The instrument is unable to detect that a probe is connected. Check that a
probe with a properly programmed INFO-CON connector is attached.
The incorrect probe is attached to the unit or channel in the case of
the 1524. The meter is set to accept only the probe with the given serial
instrument properly programmed for the new probe. See Section 3.4,
Probe Lock Function on page 25.
The pass code entered was not correct.. Note: The factory set pass
code is 1234.
Make sure the instrument has power, either from the batteries or the
AC adapter.
Verify that the initialization information appears on the display when the
power is switched on.
Check to make sure that a probe is properly connected. Check to make
sure that the INFO-CON connector is programmed properly using the
9940 software.
Poor or incorrect connection of the probe. A common mistake is to
connect the wires of the probe to the wrong terminals. Check the wiring
carefully (see Figure 16 on page 27).
Open, shorted, or damaged sensor or lead wires. Check the
resistance across the sensor using a handheld digital multi-meter.
Check the resistance between common pairs of leads. Check to make
sure there is no conductivity between any of the leads and the probe
sheath. Use a good-quality sensor to avoid errors caused by drift,
hysteresis, or insulation leakage.
Stem conduction error. Make sure the stem of the probe is immersed in
Electrical interference. Intense radio frequency radiation near the
thermometer or the probe can induce noise into the measurement circuits
resulting in erratic readings. Try eliminating the source of interference or
moving the thermometer to a different location.
Troubleshooting
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