Calibration, Maintenance, and Troubleshooting
1919-R User Manual
104
12.5
Error Messages
The 1919-R displays various error messages when operated outside its normal range.
Over range:
When the power or energy being measured exceeds the range of the
measurement scale being used, the “over” message is displayed, but the reading still appears
on the display. If the power or energy exceeds the maximum by more than 10%, the reading
on the display is blanked.
Low Battery:
When the battery is almost discharged, the Battery icon will have only 1 segment
left. This means the battery is ¾ empty. At this stage, the 1919-R should be connected to the
charger. It will operate normally and charge while connected to the charger.
Sat:
When the Photodiode current exceeds 1mA, and the detector starts to saturate, or the
Pyroelectric voltage exceeds the maximum, the message "sat” (=saturated) is displayed.
12.6
Troubleshooting
12.6.1
1919-R Meter
Table
12-2 1919-R Meter
Problem
Cause/Remedy
Instrument will not operate after being
completely discharged and connected to
charger.
Verify that charger is providing 12V.
Instrument operates with charger but not
with battery alone.
Battery is low. Recharge overnight with the 1919-R
turned off for 5 hours. If the 1919-R still does not
work with battery, then the Lithium Ion battery is
probably dead. Replace battery (see
12.6.2
Thermopile Sensors, Energy Measurements
Table
12-3 Thermopile Sensors, Energy Measurements
Problem
Cause/Remedy
Instrument triggers on background noise or
sometimes fails to catch large pulse.
Increase threshold level. See
Instrument does not show ready for a long
while after a reading is made.
Increase threshold level. See
Non-reproducible results when measuring
very small energy pulses; or no response to
pulses at low energy.
