Vanguard Tri-Phase - Manual (Page 19)

TRI-PHASE OPERATING™ INSTRUCTIONS
19
11.0 Special Features
11.1 LCD Contrast Control
To darken the LCD display, press and hold the “V Contrast” switch for more than two seconds. To
lighten the LCD display, press and hold the “W Contrast” switch for more than two seconds.
11.2 Test
Voltages
The TRI-PHASE™ has three selectable test voltages: 8Vac, 40Vac, and 100Vac. The TRI-
PHASE
™ has two selectable test frequencies, 50 Hz and 60 Hz. Refer to Table 19.0 for test voltage
selection.
11.3 Computer Control And TTRA Software Application
The TRI-PHASE™ may be controlled by an IBM compatible PC via the RS-232 interface port or
USB interface port. Cables for the RS-232C and USB connections are supplied with each TRI-
PHASE™. The operator connects the appropriate PC interface cable to the TRI-PHASE™. A
Microsoft Windows
™
Based PC TTRA software application is delivered with each TRI-PHASE™.
The TRI-PHASE™ test result data is stored in ASCII format making it possible to export the data
into any database desired. Microsoft Windows XP
™
, and Microsoft Windows Vista
™
support the
TTRA software application. Using this software application, the operator has the ability to:
• Perform transformer test(s) under control of the PC
• Save transformer test results directly to the PC
• Transfer test records stored in the TRI-PHASE™ FLASH EEPROM to the PC
• Transfer transformer test plans generated by the TTRA to the TRI-PHASE™ FLASH
EEPROM memory
• Transfer test records from the TRI-PHASE™ FLASH EEPROM to the thumb drive
• Transfer test plans generated by the TTRA into the thumb drive
11.4 USB FLASH Memory Thumb Drive
The USB FLASH memory thumb drive is capable of storing test records and test plans. This device
will be referred to from now on as the “thumb drive”. Many of the operational menus described in
this manual will contain an extra option to select the thumb drive. When this option is selected, the
submenus will allow for selection of the internal FLASH EEPROM memory or the thumb drive
FLASH memory. Refer to section 25.0 for further details of the menus which have this option.