Western Telematic CAS-161A manual 1UnitInstrumentDescriptionFrontPanel, Front Panel Indicators

Figure2. 2.1:UnitInstrumentDescriptionFrontPanel

2.1.Front Panel Indicators

￿PWR: (Power) Indicates power to the unit is ON.

￿TXD: (Transmit Data) Indicates data is being transmitted out pin 2 of the Control port (MODEM Port). Indicates data is being received at pin 2 of the selected port.

￿RXD: (Receive Data) Indicates data is being received at pin 3 of the Control port.

￿RTS: (Request to Send) Indicates high RS232 signal at pin 4 (output) of the Control port. Indicates high signal at pin 4 (input) of the selected port.

￿ CTS: (Clear to Send) Indicates a high RS232 signal received at pin 5 (input) of the Control port.

￿ALL: Indicates Broadcast Mode is active, all ports open.

￿SECTION Indicators: When optional Add-On Module(s) are present, indicators show port connections on master or Add-On Modules as follows:

•Section 1: Ports 1 - 16 selected on master unit.

•Section 2: If second Module is present, indicates Ports 17 - 32 selected.

•Section 3: If third Module is present, indicates Ports 33 - 48 selected.

•Section 4: If fourth Module is present, indicates Ports 49 - 64 selected.

Example: If Section 4 LED and Active Port 2 LED are lit, this indicates port 50 is selected (2 + 48 = 50).

￿ACTIVE PORT Indicators: These indicators are used with the previously mentioned SECTION LEDs to indicate the port currently connected to the Control port.

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