Patton electronic 1140RC user manual Fiber Connections, Led Status Monitors, Power-Up, Sma St

4.3.2 FIBER CONNECTIONS

The Model 1140RC is designed to work with the self-powered Model 1140, or with another Model 1140RC. In either case, you will need one unit at each end of a dual fiber cable. This cable connects to the Model 1140RC using either ST or SMA connectors. Figure 7 (below) shows a close-up of each of these connector types.

SMA

ST

alignment pin faces down

Figure 7. Close up of ST and SMA connections

13

5.0 OPERATION

Once you have configured each Model 1140RC and connected the cables, you are ready to operate the units. This section describes the LED status monitors and power-up procedure.

5.1 LED STATUS MONITORS

The Model 1140RC features ten front panel status LEDs that indicate the condition of the modem and communication link:

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

•The green “TD” and “RD” indicators blink to show positive state data activity. The Red “TD” and “RD” indicators blink to show negative state data activity. Solid red indicates an idle state.

•The green “RTS” and “CD” indicators glow solid to show the control signal is on. The red “RTS” and “CD” indicators glow solid to show the control signal is off. When the 1140RC is connected to a DTE, RTS will glow green for an incoming signal on RS-232 pin 4. CD will glow green for an incoming signal from the line, and an outgoing signal on RS-232 pin 8.

•The “Test” LED glows when either the Local Analog Loopback (LAL) or Remote Digital Loopback (RDL) V.54 test mode is initiated. The “Error” LED blinks when an error is detected by the V.52 diagnostics.

5.2 POWER-UP

There is no power switch on the Model 1140RC: Power is automatically applied to the 1140RC when its card-edge connector makes contact with the chassis’ mid-plane socket, or when the chassis’ power supply is turned on. Note: The 1140RC is a “hot swappable” card—it will not be damaged by plugging it in or removing it while the rack is powered up.

When the local and remote units are both powered up, and are passing data normally, the following LED conditions will exist:

•PWR = green

•TD & RD = flashing red and green

•RTS & CD = green

•Test = off

•Error = off

14