Patton electronic 2073RC Model IM2RC/IA 10Base-T Ethernet Rear Card, IM2RC/A, rear panel options

SGND & FRGND (JB4). In the connected position, this strap links DB-15 pin 8 (Signal Ground) and frame ground through a 100 ohm resistor. In the open position, pin 8 is connected directly to frame ground

(see Table 6).

	Table 6: JB4 strap settings
Position	Description
1 & 2	SGND (Pin 8) and FRGND Connected through a 100 ohm resistor
2 & 3	SGND (Pin 8) and FRGND Directly Connected

Model IM2RC/IA (10Base-T Ethernet Rear Card)

There are no jumpers to set in the Model IM2RC/IA, for more informa- tion, refer to the Model IM2RC/IA user manual

The Model IM2RC/IA provides line side connections through an RJ-45 connector. Figure 7 shows rear panel options and connectors locations. Descriptions of the 10Base-T connector LEDs follow Figure 7.

Figure 7. IM2RC/A, rear panel options

Status. Blinks yellow from one to eleven times to indicate system status. Each pulse pattern is separated by a 2 second “off” period. Greater pulse patterns have higher priority (buffer saturation has greater priority than an empty MAC table). Valid system statuses are:

•1 pulse = system status ok

•2 pulses = No MAC entries in the MAC address table

•3 pulses = Clear to send (CTS) or Carrier Detect (DCD) from base unit are not asserted

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