Micro-Aide LDM-1 Manual de usuario descargar pdf (Pagina 26)

LDM User Manual

SELECT MODE PUSHBUTTON SWITCH

The Select Mode pushbutton switch located at the front panel is used to select

the operating mode of the LDM-1. The Normal Mode of operation occurs

automatically when the unit is first powered up. By momentarily pressing the

Select Mode pushbutton switch, the modem can be advanced from Normal

Mode to Test Mode A, Test Mode B, Test Mode C and finally back to Nor-

mal Mode. Each time the pushbutton switch is pressed the modem advances

one step in the cycle.

OPERATING MODES

Each of the four operating modes are described in the following sections.

Figure 6 on page 21 illustrates the signal flow applicable to each operating

mode.

Label Name Color

Description

Pwr Power Red Modem has internal 5Vdc power

CD Carrier Detect Green Data is present on receive channel

Flashes if Test Mode C is receiving data

Tst2 & Tst1 Test 2 & Test 1 Red Off & Off: Normal Mode

On & Off: Test Mode A

Off & On: Test Mode B

On & On: Test Mode C

CTS Clear to Send Amber DTE can send data

RTS Request to Send Amber DTE has asserted RTS

Rcv Receive Data Red Receive channel is receiving data

Xmt Transmit Data Red Transmit channel is transmitting data

Table 3 - LED Indicators

NOTE: Regardless of the operating mode selected the transmit and receive

channels will remain terminated in accordance with the user's selections.

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 47 48

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Micro-Aide LDM-1 Manual de usuario Pagina 26