Async Test - Toshiba 650CT Maintenance Manual

3.10 Async Test

To execute the Async Test, select 7 from the DIAGNOSTIC TEST menu, press Enter and
follow the directions displayed on the screen. The Async Test contains seven subtests that
test the asynchronous communication functions. Move the highlight bar to the subtest you
want to execute and press Enter.
The subtests require the following data format:
Method:
Speed:
Data:
Data pattern:
The following message will appear at the bottom of the screen when subtests 01, 02, 03, 05,
06, and 07 are selected:
Channel#1 = XXXXh
Channel#2 = XXXXh
Channel#3 = XXXXh
Select the Channel number (1/2/3)
The serial I/O port address is specified by the XXXXh number. Select the serial port channel
number, and press Enter to start the subtest.
Subtest 01 Wraparound (board)
NOTE: To execute this subtest, a serial port wraparound connector
(34M741621G01) must be connected to the serial port. The serial port
wraparound connector wiring diagram is shown in Appendix F.
This subtest checks the data send/receive function through the wraparound
connector.
Subtest 02 Point to point (Send)
NOTE: To execute this subtest, two machines must be connected with a serial
port direct cable. One machine should be set as "send"(subtest 02) and the
other set as "receive" (subtest 03). The wiring diagram for the serial port
direct cable is shown in Appendix F.
This subtest sends 20h through 7Eh data to the receive side, then receives the
sent data and compares it to the original data.
3-22
Asynchronous
9600BPS (Subtests 01 to 04)
38400BPS (Subtests 05 to 07)
8 bits and one parity bit (EVEN)
20h to 7Eh
650CT