channel
Defines the synchronous lines on which the test should run. You can
use one or more of the following to test the
DEC MicroServer:
/CH0
/CH1
/CH2
/CH3
/ALL
Note that you can only use /CH0 with the
DEC MicroServer-SP.
/qualifier
Specifies the type of test you want to perform. The following qualifiers
can be used with the TEST DATA_LOOPBACK command:
/INTERNAL
/MANUAL
/LOCAL
/REMOTE
The second format of the remote console TEST command is:
TEST CONTINUOUS
The following sections describe each test and give examples of their use.
D.5.1 Data Loopback Tests
The data loopback tests use a connector in the communications path. This
loopback connector joins the transmit and receive paths and enables all
information sent to be returned. The tests send data along the line and wait
for the looped data to return. The returned data is then compared with the
transmitted data. Differences between the two versions of the data indicate
where an error on the path is corrupting the data.
Figure D–1 shows the points where information can be looped back. You use
different forms of the TEST DATA_LOOPBACK command for each point, as
the figure indicates.
D–4 DEC MicroServer Facilities for Problem Solving
