Connectors, Dsub-25 connector pin assignments, Component layout – Meinberg DCF77C51 User Manual

Page 15: Usage of the current loop interface, Active output to passive input

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15

Connectors

Name

Type

Signal

Cable

Serial Interface

25 pin SUB-D

RS232

shielded data line

20mA

Pulse Outputs

pulse per second
pulse per minute

Antenna

BNC

77.5kHz

shielded coaxial line
(RG174/RG58)

Power Supply

230V /AC

power supply cord

DSUB-25 Connector Pin Assignments

1

14

P_SEC out, collector

2

RxD in

15

P_SEC out, emitter

3

TxD out

16

P_MIN out, collector

4

RTS (connected with CTS)

17

P_MIN out, emitter

5

CTS (connected with RTS)

18

6

DSR (connected with DTR)

19

7

GND

20

DTR (connected with DSR)

8

P_SEC (RS232)

21

-act_in

9

-pass_in / +act_in

22

10

+pass_in

23

11

curr_loop +5V out

24

curr_loop -15V in

12

+pass_out

25

-act_out

13

-pass_out / +act_out

DB25 connector, female, front view

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