Instruction Manual TR-Mark III 250V Version 1.10 Preliminary Page 55 of 57
C Error Messages
TR-Mark III 250V is designed to be trouble free, so you may not see many error messages. A
few messages appear because of operation error. Let us have a look at those first.
Message Explanation
No Test Leads: TR-Mark III 250V may detect if there are no test leads
connected, or if they are not connected to test object. This
message may save time during measurements in the field.
Emergency Pressed: No measurement can be started when the emergency
switch is pressed. A running measurement will be cancelled
immediately. Release the emergency switch, and this
message will disappear.
Check Trafo Setup: In many cases an incorrectly connected test object is
detected by TR-Mark III 250V. Then this message appears.
T-Rex not found: You will see this message, when trying to measure with a T-
Rex (3P Configuration) which is not connected.
3P:3P only with Voltage Ext: Another message that may appear when trying to start a T-
Rex measurement without having it properly connected
Overcurrent: As the message says, a high current is flowing on the H
side. Check test settings and all connections.
Other messages may appear because of damage or malfunction of a component in the
TR-Mark III 250V. If any of these messages appear on the screen, turn the TR-Mark III 250V
off. Restart it after a few seconds and try again. If you still receive the same message, please
contact our local representative or Raytech.
Calibration failed
Calib Warning
Overload U, True
ADC Quartz
failed
No Sync
No Com
H8Reset
Comm Lost
Relays,{0},{1}
Voltage
TRex
Phase
Tap Switch
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