Model 256/PC Instruction Manual
Page 19
PC INTERFACE
The RS-232C serial port on the rear panel can be used to connect a Personal Computer (PC)
when not connected to a printer. Cablescan provides an optional PC software program (TERM)
which can be used to control and transfer programs between the Model 256/PC and the PC. The
software can also be used to transfer programs between the Model 256/PC and other Cablescan
testers.
1. Install the TERM software program in your PC in accordance to the software instruction
manual.
2. Connect an interface cable between the serial port (COM 1) on the PC to the 25-pin
female D-type connector on the rear panel of the Model 256/PC labeled
PRINTER/SERIAL.
3. Set Model 256/PC power switch to 1 (on).
4. Press the up or down arrow to step through the menu to reach SET BAUD RATE.
5. Press MENU RUN to initiate setting the baud rate.
6. If the display reads "Baud Rate 9600," press RESET.
7. If the display shows: "Baud Rate 1200," press the down arrow to change to 9600 and then
press MENU RUN.
8. Execute TERM from the DOS prompt on the PC.
9. A greater-than prompt (>) should appear on the PC screen.
NOTE
If the prompt does not appear, press ESC. Also verify that the
interface cable is wired according to the pin assignments shown
below and verify the correct baud rate of 9600. The software
automatically sets the format on the PC. The serial port on the
PC must also be set for COM1.
Transmission to the PC is at 9600 Baud, with 8 data bits, 1 stop bit, and no parity. Pin
assignments are as follows:
Function
Tester
25-Pin ‘D’
PC
9-Pin ‘D’
(Com 1)
PC
25-Pin ‘D’
(Com 1)
Data
In
2 3 2
Data
Out
3 2 3
Signal
Ground 7 5 7
NOTE
Pin numbers 2 and 3 are crossed when a 25-pin D is
on both ends Pin number 7 is connected directly.
Summary of Contents for 256/PC
Page 1: ...MODEL 256 PC CONTINUITY TESTER ...
Page 2: ......
Page 61: ...Model 256 PC Instruction Manual Page 53 Figure 20 Schematic CPU Board 1 of 3 ...
Page 62: ...Page 54 Model 256 PC Instruction Manual Figure 20 Schematic CPU Board 2 of 3 ...
Page 63: ...Model 256 PC Instruction Manual Page 55 Figure 20 Schematic CPU Board 3 of 3 ...
Page 64: ...Page 56 Model 256 PC Instruction Manual Figure 21 Schematic Scanner Board 1 of 3 ...
Page 65: ...Model 256 PC Instruction Manual Page 57 Figure 21 Schematic Scanner Board 2 of 3 ...
Page 66: ...Page 58 Model 256 PC Instruction Manual Figure 21 Schematic Scanner Board 3 of 3 ...
Page 67: ...NOTES ...
Page 68: ...Cablescan 5900379 REV G ...