User Guide

3.11 Async Test 3 chTests and Diagnostics
3.11 Async Test
NOTE: This test cannot be performed without Advanced Port Replicator III. Before
executing this test, make sure the computer is docked with the Advanced Port
Replicator III.
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 subtests that
test the asynchronous communication functions. Move the highlight bar to the subtest you
want to execute and press Enter.
Subtests 01 through 07 require the following data format:
Method: Asynchronous
Speed: 9600BPS
Data: 8 bits and one parity bit (EVEN)
Data pattern: 20h to 7Eh
The following message will appear at the bottom of the screen when subtest 01, 02 or 03
is 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.
The following message will appear at the bottom of the screen when subtest 06 or 07 is
selected:
Enter desired speed [1=0.576 Mbps, 2=1.152 Mbps, 3=4.0 Mbps]
Select the speed for sending or receiving the data and press Enter to start the
subtest.
Subtest 01 Wrap around (board)
NOTE: To execute this subtest, an RS-232C wraparound connector must be connected
to the RS-232C port in the Advanced Port Replicator III. The RS-232C
wraparound connector wiring diagram is described in Appendix F.
This subtest checks the data send/receive function through the wraparound
connector.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 3-27