Appendices – Fluke 2625A User Manual

Page 191

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Appendices

RS-232 Cabling

F

F-5

Rx

Tx

DTR

GND

DSR

RTS

CTS

1

2

3

4

5

6

7

8

9

RS-232C

HYDRA

DB-9

Tx

Rx

RTS

CTS

DSR

GND

DCD

DTR

RI

MODEM

DB-25

RS41 CABLE

(OR EQUAL)

FEMALE

MALE

PINS

KEY

Tx – TRANSMIT

Rx – RECEIVE

RTS – REQUEST TO SEND

CTS – CLEAR TO SEND

DSR – DATA SET READY

GND – GROUND

DCD – DATA CARRIER DETECT

DTR – DATA TERMINAL READY

RI – RING INDICATOR

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

oo07f.eps

Figure F-4. Hydra (DB-9) to Modem (DB-25) RS-232 Connection

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