8 communications interface 47, 1 rs-232 connection 47, Figure 9 rs-232 wiring 47 – Fluke 1522 User Manual

Page 48: Communications interface, Rs-232 connection, Figure 9, Rs-232 wiring, 8communications interface, 1 rs-232 connection

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8

Communications Interface

Remote communications allows an external device, such as a computer, to com-
municate with the instrument to obtain measurement data and control its opera-
tion. Communication is accomplished with various commands issued to the
instrument through the RS-232 serial port.

8.1

RS-232 Connection

The three-conductor jack for the serial port is located on the top of the instru-
ment near the probe connector. One serial cable is included with the instrument.
Additional or longer cables, of three meters or less, can be constructed by fol-
lowing the wiring diagram shown in Figure 9.

NOTE: The TxD line on one side connects to the RxD line on the other

and vice-versa.

To reduce the possibility of electrical interference, the serial cable should be
shielded with low resistance between the connector and the shield. It should not
be much longer than is necessary.

47

8 Communications Interface

RS-232 Connection

1

2

3

4

5

6

7

8

9

RxD

TxD

GND

RxD

TxD

GND

Figure 9 RS-232 Wiring

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