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2-WIRE IDSL LINE DRIVER RACK CARDS
• Remote Digital Loop and 511: Initiates the Remote Digital Loopback test and
starts the internal 511 generator and detectors.
• Remote Digital Loop and 511 with errors: Initiates the Remote Digital
Loopback test and starts the 511 test patterns. In this test, the 511 pattern
generator will inject initial errors into the data stream.
The Modem Status screen is displayed upon initiating a test. Press ESC to return to
the Test Mode menu. Press the space bar to refresh the modem status page.
3.3 Configure the Rear Interface Card
The 2-Wire IDSL Line Driver Rack Card has several interface card options:
10BASE-T, G.703, RS-530, V.24, V.35, and X.21. Each of these options supports one
DTE interface connection and one 2-wire/4-wire twisted-pair line connection.
Before installation, you will need to examine the rear card to be sure it is properly
configured for your application. Each rear card is configured by setting straps
located on the PC board. To configure the rear cards, you must set the
configuration straps. Figure 3-20 shows the orientation of these straps. Each strap
can either be on pegs 1 and 2, or on pegs 2 and 3.
Sections 3.3.1
through
3.3.3
describe the strap locations and possible settings for each rear card.
Figure 3-20. Orientation of interface card straps.
3.3.1 DB25/RJ-45 R
EAR
C
ARD
(RS-530
AND
V.24) S
TRAP
S
ETTINGS
Figure 3-21 shows strap locations for the DB25/RJ-45S (RS-530 and V.24) rear
cards. These straps determine various grounding characteristics for the terminal
interface and twisted-pair lines. JB3 and JB4 are user configurable. JB2 must be set
on pegs 1 and 2.
1
2
3
1
2
3
1
2
3
