ARC DSP 9612 Guide de l'utilisateur télécharger pdf (Page 19)

Installation

Page 20

SW1-5

−

Receiver Dynamic Range (high- & low-speed modes)

SW1-5

ON =

−

10 to

−

43 dBm

OFF = +3 to

−

30 dBm

For a low receive signal level, set SW1-5 to ON (

−

43 dBm ). For short

distances or to select a strong receive signal, set SW1-5 to OFF.

SW1-6 and SW1-7

−

RTS-CTS Delay (low-speed mode only)

Switches SW1-6 and SW1-7 determine the duration of the RTS-CTS

delay. Table 2-5 shows the RTS-CTS delays you can select using these

switches.

Table 2-5. RTS-CTS Delays

SW1-6 and SW1-7 Switch Settings

RTS-CTS Delay

SW1-6 SW1-7

8 ms. delay OFF OFF

33 ms. Delay OFF ON

59 ms. Delay ON OFF

219 ms. delay ON ON

SW1-8

−

Anti-streaming (high- & low-speed modes)

SW1-8 ON = Anti-streaming active

OFF = Anti-stream inactive

Typically, anti-streaming is used in multi-point applications to prevent

a malfunctioning slave modem from occupying the line indefinitely.

When anti-streaming is active, the modem can transmit data for a

maximum of 27 seconds before the transmitter turns off automatically.

The modem then looks for an ON-to-OFF Request To Send (RTS)

transition before proceeding with normal operation. Anti-streaming can

be selected in either high-speed or low-speed mode.

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ARC DSP 9612 Guide de l'utilisateur Page 19

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