Vanguard CT-7500 - Manual (Page 55)

MODEL CT-7500 OPERATING INSTRUCTIONS
Rev 2 Jan 2001
49
9.13 Computer Interface
Each CT-7500 has an RS-232C port. A Breaker Analysis Software package (provided with the
CT-7500) allows an IBM PC to communicate with a CT-7500. This software (operating under
Windows 95, Windows 98, Windows Me, Windows 2000, and Windows NT environment) allows
users to upload timing shots stored in EEPROM to the IBM PC. From the user's IBM PC, the user
can now re-analyze breaker timing shots and output timing report through an office printer. Since
timing shots are stored in an office PC, users can create a data base of a breaker's timing history.
A breaker's test plan can also be downloaded and stored in the CT-7500 EEPROM. Up to 20
test plans can be stored in a CT-7500. Consult the CT-7500 software manual for further details.
Follow the steps in the Table 9-15 below to put the CT-7500 under computer control:
Table 9-15. Selecting or Aborting Computer Control
STEP OPERATION ACTION DISPLAY
1 SELECT SET UP MENU. PRESS # 3 KEY. 1. ANALYSIS POINT
2. MEASUREMENT UNITS
3. SAVE / RESTORE
4. NEXT PAGE
2 SELECT NEXT PAGE. PRESS # 4 KEY. 1. SHOT DESCRIPTION
2. NUMBER OF CHANNELS
3. COMPUTER IF
4. CLOCK 5.PRINT
3 SELECT COMPUTER INTERFACE. PRESS # 3 KEY. COMPUTER IF MODE
"STOP" TO ABORT
Notes
1. An interconnect cable must be run between Timer's RS-232C port and a compatible IBM PC.
2. Refer to the Breaker timing software manual for the software to run on the IBM-compatible
computer.
3. The CT-7500's RS-232 connector pinout is in the chart at
the right:
4. The operator is required to put the CT-7500 under
computer control before executing the PC program.
PIN No. SIGNAL NAME
2 Tx
3 Rx
5 GND