Patton electronic Model 1065 user manual LED Status Monitors, ANTI-STREAMING Error Indicator

5.0 OPERATION

Once you have configured each Model 1065 Series unit properly and connected the twisted pair and RS-232 cables (see Section 4.0), you are ready to operate the units. This section describes reading the LED status monitors, powering-up and using the built-in V.52 and V.54 test modes.

5.1 LED STATUS MONITORS

The Model 1065 Series features seven front panel status LEDs that indicate the condition of the modem and communication link. Figure 5 shows the front panel location of each LED. Following Figure 6 is a description of each LED's function.

Model 1065 Industrial Short Range Modem

						V.54 Test
Power	TX	RX	RTS	CD	Error	Modes
						Test
						511	-	- Remote
								- Normal
						511E	-	- Local

Figure 6. Model 1065 front panel.

5.1.1 The “TD” and “RD” Indicators

The Power LED glows green to signal power present. The “TD” and “RD” indicators blink green with data activity. Off indicates a low RS- 232 logic level, green indicates a high RS-232 logic level. Note: RS- 232 devices idle in a low state, so the LED will be off if the connections are correct and the RS-232 device is in an idle state.

5.1.2 The “RTS” and “CD” Indicators

The “RTS” and “CD” indicators are monocolor and will be off for a “low” signal or green for a “high” signal. RTS lights for an incoming signal on RS-232 pin 4. CD lights for an incoming signal on the line side, and the resulting output signal on RS-232 pin 8.

5.1.3 The “Test” Indicator

The yellow“Test” LED indicates that V.52 or V.54 tests are running.

5.1.4 The “Error” Indicators

The “Error” indicator LED has two functions:

A.When the 1065 unit is in test mode (green “Test” LED is lit), the error LED glows red when bit errors occur.

B.When not in test mode (green “Test” LED is off), the error LED is used to indicate an RTS streaming condition. (See Section 5.2) for information on the anti-streaming circuitry.

5.2ANTI-STREAMING ERROR INDICATOR

When not in test mode (green “Test” LED is off), the front panel “Error” LED is used to indicate a streaming error. When the Model 1065s’ anti-streaming circuitry is enabled, the RTS signal from the DTE is timer controlled. The timer begins to count when the DTE raises RTS. If the time period that RTS remains high exceeds the preset time out period, the anti-stream circuit will force RTS low. The “Error” LED will light red, indicating a streaming condition (RTS continually on). This feature prevents a malfunctioning terminal from tying-up a com- puter port in a multi-drop or polling environment. When the DTE drops RTS, the anti-streaming timer is automatically reset and the front panel “Error” LED turns off. The time out period is DIP switch selectable for 12.5 or 50 seconds.

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