Data Communications Self-Test Connectors; Point-To-Point Data Communications Self-Test Procedure - HP 2641A Reference Manual

Installation
Table 7-14. Data Communications Self-Test Connectors
SELF-TEST
CONNECTORS HP PART NO. USED FOR
c"
02645-60002 Checks RS232 circuits on 13260A, B, C, D
accessory PCA's. (Does not check multipoint
circuits on PCA; use 02645-60004 test can-
t/
nectar below.)
n
02645-60003
Checks current loop circuits on 13260B
accessory PCA.
~
02645-60004 Provides loop-back of RS232 signals at RS232
connector end of cable. Used during self-test of
multipoint configurations.
Table 7-15. Point-to-Point Data Communications Self-Test Procedure
13232C or N
CABLE ASSEMBLY
I
TEST CONNECTOR
( ' - 02645-60003
o~
' - CHECKS DATA COMM PCA
TEST CONNECTOR
l
02645-60002
o~
,~
13232F CABLE
,
13260A
13260B
OR
13260B
(CURRENT
LOOP)
e. If operating in current loop, turn power off and use test connector part no.
02645-60003 to connect to the 13260B Data Communications PCA. Turn on
power, and type characters on the keyboard. The characters should be echoed
back (two characters displayed if the terminal is set for Half Duplex). This
verifies proper operation of current loop send and receive circuits.
d. Refer to data comm self-test flowcharts for diagnosing possible error messages.
STEP 1,
a. Ensure power is off, and disconnect cable data communications PCA.
b. Connect PCA Test Connector, part no. 02645-60002, to data communications
PCA.
c. Turn on power, set the terminal to REMOTE, and press
I
GREEN
I ,
c=J
(see note).
ENTER
STEP 2.
a. Turn off power, and connect 13232C or N Cable Assembly to 13260A, B, C, or
D data communications PCA. (If operating in current loop, connect 13232F
cable to 13260B data communications PCA.)
b. Connect RS232 Test Connector, part no. 02645-60004, to RS232 connector on
13232C or N cable.
c. Turn on power, set the terminal to REMOTE and press
I
GREEN
I,
c=J
(see note).
ENTER
d. Refer to data comm self-test flowcharts for diagnosing possible error messages.
TEST CONNECTOR
l"--_MOD_EM----'~
0264@
\"'~
13232C, N, OR U
CABLE ASSEMBLY
CHECKS CABLE ASSEMBLY
NOTE: For terminals without cartridge tapes, use ESC x to perform data comm self-test.
7-44