ACCURATE ELECTRONICS 104001C Посібник - Сторінка 4

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ACCURATE ELECTRONICS INC

WWW.ACCURATE.ORG

PO BOX 1654 97075-1654 8687 SW HALL BLVD 97008

employing DX, loop back or other dc signaling schemes (see Figure 4).

Normal simplex leads can also be used to apply sealing current to a metallic

facility from a local source external to the module.

2.12 The fourth sealing-current/simplex-lead option is bypassed simplex-

lead signaling.

This option provides a straight-through simplex-lead

signaling path between the module's facility and terminal sides that is

completely separate from the modules' transmit and receive transmission

paths. A switch option available when bypassed simplex-lead signaling is

selected provides either a normal straight-through signaling path (RCV IN

SX to RCV OUT SX and XMT IN SX to XMT OUT SX) or a reversed

straight-through signaling path (RCV IN SX to XMT IN SX and RCV OUT

SX to XMT OUT SX). The reversed signaling-path option is used to

compensate for polarity reversals in duplex- (DX-) signaling and ground-start

application.

3. INSTALLATION

Inspection

3.01 The 104001C Prescription Line Amplifier module should be visually

inspected upon arrival to find possible damage incurred during shipment. If

damage is noted, a claim should immediately be filed with the carrier. If

stored, the module should be visually inspected again prior to installation.

Mounting

3.02 The 104001C module mounts in one position of an Accurate Type-10

Mounting Shelf, which is available in configurations for relay-rack and

apparatus-case installation, or in one position of an Accurate 246 Resistive

Data Bridge Mounting Assembly.

electrically into a 56-pin connector at the rear of its shelf or assembly

position.

Installer Connections

3.03 Before making any connections to the mounting shelf or assembly,

ensure that power is off and modules are removed. Modules should be put

into place only after they are properly optioned and after wiring is completed.

When installing 104001C modules in 246 Assemblies, refer to the Accurate

practice on the 246 Resistive Data Bridge System for cabling instructions and

module pinout assignments.

3.04 Table 3 lists external connections to the 104001C module. All

connections are made via wire wrapping to the 56-pin connector at the rear

of the module's mounting shelf position. Pin numbers are found on the body

of the connector.

TABLE 3. External Connections to 104001C.

CONNECT

XMT OUT TIP

XMT OUT RING

XMT OUT SIMPLEX

RCV IN TIP

RCV IN RING

RCV IN SIMPLEX

XMT IN TIP

XMT IN RING

XMT IN SIMPLEX

RCV OUT TIP

RCV OUT RING

RCV OUT SIMPLEX

-BATT (FILTERED -22 TO -56

VDC IN)

This document contains proprietary information and is supplied for identification, maintenance, engineering evaluation or inspection purposes only and shall not be duplicated or disclosed without written

permission of: ACCURATE ELECTRONICS INC By accepting this document the recipient agrees to make every effort to prevent unauthorized use of this information.

The module plugs physically and

To PIN

43 and 45

9 and 11

51 and 53

1 and 3

Practice Section 104001C Rev B

BEAVERTON OR USA 503.641.0118

Strap Options

3.05 As shipped from Accurate, connector pin 43 is the 104001C's XMT

OUT SX lead and connector pin 3 is the RCV OUT SX lead. If an additional

(or alternative) connector-pin appearance for the XMT OUT SX lead is

desired on pin 45, install option strap JP9 where indicated on the module's

printed circuit board, as shown in Figure 6. If an additional (or alternative)

connector-pin appearance for the RCV OUT SX lead is desired on pin 1,

install option strap JP10 where indicated on the module's printed circuit

board (also shown in Figure 6). Before installing JP9 or JP10, be sure to

observe the caution below.

Switch Options

3.06 Five option switches must be set before the 104001C can be placed into

service. Locations of these switches on the module's printed circuit board

are shown in Figure 6, and instructions for setting the switches are given in

paragraphs 3.07 and 3.08.

FIGURE 6. 104001C Option Switch and Strap Locations.

CAUTION: Extreme care must be taken when soldering on printed circuit

boards to prevent damage to the delicate foil. Use a soldering iron with a

tip temperature of 800 degrees or less. Use only 60/40 or 63/37 tin / lead

rosin-core solder. Do not hold the tip of a hot iron on a soldering

connection for longer than two (2) seconds.

Note: All switches on the front panel of the 104001C are used for

alignment and are covered in paragraph 3.09 through 3.014.

Terminating Impedances

3.07 Switch S1 selects the terminating impedances at the 104001C's facility-

side ports (rcv in and xmt out). Switch S3 performs the same function for the

4001's terminal-side ports (rcv out and xmt in). Set each switch to the 1200,

600, or 150 position as required. In general, 1200-ohm impedance is used to

interface loaded cable, 600-ohm impedance is used to interface non-loaded

cable, carrier, SF or DX signaling units, terminating sets, or station apparatus,

and 150-ohm impedance is used to provide a small amount of slope

equalization through the deliberate impedance mismatch when the module

interfaces long section of non-loaded cable (see paragraph 2.07)

Facility-Side Sealing-Current/SX-Lead Options

3.08 Switch S6 conditions the 104001C to supply internally generated 25mA

sealing current, to accept externally supplied sealing current from the distant

end of the facility, or to derive normal simplex leads on the facility side.

Select the desired facility-side sealing current/SX-lead arrangement as

follows:



For normal SX-lead derivation on the facility-side, set S6 to SX.



For internally generated 25mA sealing current on the facility

side, set S6 to SOURCE.

January 2014

FAX 503.646.3903