Patton electronic 2701RC manual 7

3.2 CONFIGURING THE REAR INTERFACE CARD

The Model 2701RC Series has five interface card options: the Model 1001RCM12548C (DB-25/RJ-48C), the Model 1001RCM13448C (M/34/RJ-48C), the Model 1001RCM11548C (DB- 15/RJ-48C), the Model 1001RCM11575 (DB-15/Dual BNC). Each of these options supports one DTE interface connection and one 4-wire line connection. Figure 3 below illustrates the five different interface options for the Model 2701RC Series.

		Model		Model	Model		Model	Model
1001RCM11575			1001RCM11548C 1001RCM12548C 1001RCM13448C					IM2RC/IA
						RJ-48C
	Dual BNC			RJ-48C	RJ-48C			RJ-48C

DB-15 F DB-15 F DB-25 F M/34 F

Figure 3. Model 2701RC Series interface card options

NOTE: The 2701RC Series rear cards are specifically designed to operate with the E1 function card and must not be swapped with other Patton function cards. In addition the rear card must match the flip card installed on the front card.

Prior to installation, you will need to examine the rear card you have selected and make sure it is properly configured for your applica- tion. Each rear card is configured by setting straps located on the PC board. To configure the rear cards, you must set the configuration straps. Figure 4 below shows the orientation of these straps. Each strap can either be on pegs 1 and 2, or on pegs 2 and 3.

Figure 4. Orientation of Interface Card Straps

Sections 3.2.1, 3.2.2, and 3.2.3 describe the strap locations and possible settings for each rear card.

3.2.1 Model 1001RCM12548C Strap Settings

Figure 5 shows strap locations for the Model 1001RCM12548C (DB-25) rear cards. These straps determine various grounding characteristics for the terminal interface and twisted pair lines. JB3 and JB4 are user configurable.

JB3 1 2 3

JB4

1 2 3

Figure 5. 1001RCM125XX strap locations

11 12