Instruction Manual TR-Mark III 250V Version 1.10 Preliminary Page 13 of 57
5.2.6 3 Phase Extension (T-REX)
On TR-Mark III 250V, the T-Rex Interface is used to connect and control the optional T-Rex
test set.
5.2.7 External
This port is used for an external connection to a tap changer dry contact. This port can also
be connected to the optional external control switch- Part No. 1003N-31001 for utilizing the
remote test start sequence.
5.2.8 Interface
RS232 and USB 1.1 Please see Chapter ‘10.1Hardware’ for additional details.
5.2.9 Safety Indicator
Green Light on: No voltage applied to test leads. System is in safe standby mode.
Red light on: Indicates there is test voltage on test leads. System is testing.
5.2.10 Display and Touch Panel
TR-Mark III 250V can be easily manipulated and fully controlled by the touch screen panel. If
preferred, an external mouse can be connected to the USB Port for system control.
5.2.11 Thermal Printer
Allows the user to quickly get results on paper by using the built-in thermal printer. The
printer uses thermal heat transfer technology. Therefore, there are no ink cartridges required
or printer heads. Special thermal paper is required for the printer to operate properly.
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