Patton electronic 1000RC user manual Front Card Configuration, Rear Card Strap Settings

3.2 FRONT CARD CONFIGURATION

The Model 1000RC contains two sets of configuration straps which allow you to set the function of “Carrier Detect” output. Since the Model 1000RC contains two modems, each unit can be configured separately: Jumper 1 (JB1) controls Unit A, while Jumper 2 (JB2) controls Unit B.

3.3.1 REAR CARD STRAP SETTINGS

Figure 5 shows the strap locations for the 1Q11 and the 1Q45 rear cards. These straps determine various grounding characteristics for the RS-232 and twisted pair lines.

Each “Carrier Detect” strap can be set to “Normal” or “Always on”. When operating normally, the “CD” LED will blink to indicate the presence or absence of the carrier. When set to “Always on”, the “CD” LED will always indicate that the carrier is “ON”. Figure 3 (below) summarizes the switch settings.

INTERFACE CARD JUMPER SUMMARY TABLE #1

Jumper	Function	Position 1&2	Position 2&3
JP1-A	Carrier Detect - Unit A	Always ON*	Normal
JP1-B	Carrier Detect - Unit B	Always ON*	Normal

Figure 3. Summary of jumper settings, *indicates factory default

		JB2			1
					2
					3
			JB4
1
2				1
3
				2
				3
				JB6
				JB7
				1
	JB5	1 2 3
				2
				3

(Unit A)

(Unit B)

(Unit A)

(Unit B)

}

}

Converter

twisted pair

Terminal

3.3 REAR CARD CONFIGURATION

The Model 1000RC has two interface card options: the 1Q11 (which comes equipped with two RJ-11 ports and two RJ-45 ports) and the 1Q45 (which comes equipped with four RJ-45 ports). Figure 4 illustrates these two different rear interface options.

1Q11	1Q45
RJ-11/6	RJ-45/10
RJ-11/6	RJ-45/10
RJ-45/10	RJ-45/10
RJ-45/10	RJ-45/10

Figure 4. Model 1000RC rear interface card options

Prior to installation, you should examine the rear card you have selected and ensure that it is suitable for your application. Each rear card is configured by setting straps on the PC board. Section 3.3.1 describes the strap locations and settings for each card.

5

Figure 5. Strap locations for both rear cards

Figure 6 provides a summary of strap functions for both of the rear cards. The next page describes each strap's function.

INTERFACE CARD STRAP SUMMARY TABLE #1

Strap	Position 1&2	Position 2&3
JB2	Line A Shield	No Shield†
JB4	Line B Shield	No Shield†
JB5	SGND & FRGND*	Open (Not Connected)†
JB6	Unit A DSR†	N/A
JB7	Unit B DSR†	N/A

Figure 6. Summary of strap settings, † indicates factory default

*via 100 ohm resistor

Line A Shield & Line B Shield (JB2 & JB4)

This strap pertains to the line interface. In position 1&2, the strap links RJ-11 pins 1 and 6 (RJ-45 pins 2 and 7) to frame ground and the rear panel. These pins can be used as connections for the twisted pair cable shield. In position 2&3, pins 1 and 6 (or 2 and 7) are disconnected from frame ground.

(continued)

6