Micro-Aide LDM-1 Manual de usuario descargar pdf (Pagina 19)

Setup and Installation - Setup

Figure 5 illustrates the location of each setting on the LDM-1 PCB.

SETUP

In the sections that follow a description is provided for each jumper and

switch setting. A description of how to permanently assert the modem’s RTS

signal is also provided.

CV AND XMT TERMINATIONS (AX1 AND AX2)

AX1 and AX2 allow the user to select either a 150Ohm (On) or high imped-

ance (Off) termination. These jumpers are used in accordance with the fol-

lowing rules.

• The AX1 (Rcv) and AX2 (Xmt) settings must always match each other.

• Irrespective of the type of network, always terminate the extreme ends of

the network (i.e., the near and far ends).

NOTE: The factory default switch and jumper settings for AX1 through AX5

and SW2 are satisfactory for use with a point-to-point network. The Equal-

ization setting controlled by SW3 may need to be changed as required by the

length of cable being used.

Figure 5 - LDM-1 PCB

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 47 48

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Micro-Aide LDM-1 Manual de usuario Pagina 19