Offline Test 5 - Composite Internal Logic Test - Digital Equipment MUXserver 100 Reference Manual

RS-232-C
1.
Insert loopback connector H325 directly into the RS-232-C composite
port
or
2. Insert loopback connector H325 into the modem cable at the modem
end
or
3. Switch modem to local loopback mode
or
4. Switch modem to remote loopback mode
or
5. Use auto-Ioopback through the remote MUXserver 100 or DECmux II
unit. The remote multiplexer will automatically detect that loopback
test is running and echo all data being sent to it.
It
will also prevent
spurious messages being sent to the unit under test from the rest of
the network.
The test will run continuously until the HALT (CONTROL-C) command is
executed.
7.2.2.5 Offline Test 5 - Composite Internal Logic Test -
This test is the same
as Offline Test
4
except that both channels are always tested and the loopback
is internal. See Section 7.2.2.4.
7.2.2.6 Offline Test 6 - Broadcast
Tc~st
-
This test requests the operator to
enter ports and their line characteristics. The input format is identical to
Offline Test 2. (See Section 7.2.2.2, Offline Test 2 - Asynchronous Port
External Test.)
After the last asynchronous port details have been entered, RETURN is typed
in response to the prompt for Port number. The test then starts immediately.
The test pass count is displayed, as shown in Figure 7 -5(a). Each of the se-
lected ports then broadcasts a single line test message, as shown in Figure
7-5(b). The message is broadcast continuously until the HALT command
(CONTROL-C) is executed.
CHAPTER 7 DIAGNOSTICS 21