User guide

DIGITMR USER’S MANUAL REV 3

Computer Interface

The DigiTMR can be computer-controlled via its RS-232C interface. A Windows

XP/Vista-based Circuit Breaker Analysis software application (VCBA) is provided with

each unit. Using this software, circuit breakers can be timed from the PC. Test records

can be retrieved from the DigiTMR and then stored on the PC for future analysis and

report generation. Circuit breaker test plans can also be created on the PC and

transferred to the DigiTMR. Additionally, test records can be exported in Microsoft

Excel

format for further analysis.

User Interface

The DigiTMR features a back-lit LCD screen (20 characters by 4 lines) that is

viewable in both bright sunlight and low-light levels. A rugged, 16-key,

membrane keypad is used to control the unit.

Internal Test Record Storage

The DigiTMR can store up to 100 test records in Flash EEPROM. Test records can be retrieved

and printed on the built-in thermal printer, or they can be transferred to a PC via the unit’s RS-

232C interface.

Internal Breaker Test Plan Storage

The DigiTMR can store up to 99 circuit-breaker test plans. Test plans are comprised of all circuit-

breaker performance specifications (stroke, velocity, and contact time). A test plan can be used

to immediately test a circuit-breaker. A pass/fail report is then generated by comparing actual

performance with the specifications in the stored test plan. Test plans can also be generated on

a PC and transferred to the DigiTMR via the unit’s RS-232C interface.

Diagnostic Capabilities

The DigiTMR is designed with self diagnostic capabilities to check the integrity of the

electronics. Self-testing of the contact cable connections and transducers allows the user to

examine the DigiTMR’s components whenever verification is required.