5.0 OPERATION

Once you have configured each Model 1004ABRC and connected the cables, you are ready to operate the units. Section 5.0 describes the LED status monitors and the power-up procedure.

5.1 LED STATUS MONITORS

The Model 1004ABRC features front panel LEDs that indicate the condition of the modem and communication link. Figure 6 (below) shows the positions of the LEDs.

Model 1004RC

 

Power

 

TD

Unit

RD

A

 

CD

 

TD

Unit

 

B

RD

 

CD

Figure 6. The Model 1004ARC front panel, showing LED positions

The green “PWR” LED glows when power is applied to the modem through its mid-plane chassis connection.

The green “TD” and “RD” LEDs show positive state data activity. The red “TD” and “RD” LEDs show negative state data activity. A solid red light indicates an idle state.

The green “CD” LED lights when the receive carrier is detected; the red LED lights when the receive carrier is absent.

5.2POWER-UP

There is no power switch on the Model 1004ABRC: Power is auto- matically applied to the 1004ABRC when its card-edge connector touches the chassis’ mid-plane socket, or when the chassis’ power is turned on.

NOTE: The 1004ABRC is a “hot swappable” card—it will not be damaged by plugging it in or removing it while the rack is pow- ered up.

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APPENDIX A

PATTON ELECTRONICS MODEL 1004ABRC

SPECIFICATIONS

Transmission Format:

Asynchronous

Data Rate:

0 to 115.2 Kbps

Surge Protection:

Silicon Avalanche Diodes

Control Signals:

DSR turns “ON” immediately after the termi-

 

nal raises DTR; DCD turns “ON” after re-

 

cognizing the receive signal from the line;

 

CTS turns on after the terminal raises RTS

Transmission Line:

2-wire or 4-wire, unconditioned twisted pair

Transmit Mode:

Full or half duplex

Transmit Level:

2V ± 10% differential output voltage

Carrier:

Controlled by data transitions

RTS/CTS Delay:

8 msec or zero

Echo Mode:

Echo and No Echo, supported in both

 

2-wire and 4-wire modes

Receiver Impedance:

Low (120 ohms), High (100k Ohms)

Line Connection:

RJ-11 or RJ-45 jack

Surge Protection:

Silicon Avalanche Diodes on twisted pair

 

interface from each line to frame ground

Power Supply:

Rack-mount power supply is switchable

 

between 120V and 240V AC; rack chassis

 

supplies 10V AC to the Model 1004ABRC,

 

typical consumption is 700 mW per card

Fuse:

400mA for 120V applications; 200mA for

 

240V applications

Temperature Range:

0-50°C (32-122°F)

Altitude:

0-15,000 feet

Humidity:

Up to 95% non-condensing

Dimensions:

0.95”w x 3.1”h x 5.4”l

 

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Patton electronic user manual LED Status Monitors, Power-Up, Patton Electronics Model 1004ABRC Specifications