Table 2—U interface pin assignments

 

Pin

Function

Pin

Function

 

 

 

 

1

2

3

4

TIP

5

RING

6

7

8

Power connector

The 4-pin mini DIN power connector is located on the side of the 1010. This design will prevent the weight of the 1010 power adapter from accidentally pulling off, when the 1010 is wall mounted. The power connector pin assignments are shown in Table 3.

Table 3—Power connector pin assignments

Pin

Function

Pin

Function

 

 

 

 

1

+9 VDC

2

- 40 VDC

3

GND for 9V

4

GND for -40V

DIP switch setting

A block of four DIP switches is located on the bottom of the 1010. Use the DIP switches to configure the 1010 according to the settings shown in Table 4. For S/T wiring configuration, please refer to Chapter 4.

Table 4—Dip switch pin assignments

Switch

Function

On

Off

 

 

 

 

1, 2

S/T - termination

Yes *

No

3

Bus timing mode

Short passive

Point-to-point, or

 

 

bus

extended passive bus

4

Spare

N/A *

N/A

* = default setting

8

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ADC ISDN NT11010 manual Power connector, DIP switch setting, Interface pin assignments Pin Function