Installation - 2

RS-232 Interface

The ac source provides an RS-232 programming interface, which is activated by commands located under the front panel Address key. When the RS-232 interface is selected, the GPIB interface is disabled.

NOTE: Sending or receiving data over the RS-232 interface when not configured for REMOTE operation can cause unpredictable results. Always make sure the ac source is configured for remote operation when using the RS-232 interface.

Interface Commands

All SCPI commands are available through RS-232 programming. The SYSTem:LOCal, SYSTem:REMote, and SYSTem:RWLock commands are only available through the RS-232 interface.

SYSTem:LOCal

Places the ac source in local mode during RS-232 operation. The front panel

keys

are functional.

SYSTem:REMote

Places the ac source in remote mode during RS-232 operation. All front panel

 

keys except the Local key are disabled.

SYSTem:RWLock

Places the ac source in remote mode during RS-232 operation. All front panel

 

keys including the Local key are disabled.

RS-232 Data Format

constant 11-bit data format

one start bit

seven data bits plus a parity bit (even or odd parity), or eight data bits without parity (parity bit is "0")

two stop bits

You can specify one of the following baud rates: 300 600 1200 2400 4800 9600

NOTE: The ac source always uses one start bit and two stop bits regardless of the baud rate. The number of start and stop bits is not programmable.

RS-232 Connector

The RS-232 connector is a DB-9, male connector. You can connect the ac source to any computer or terminal with a properly configured DB-25 connector. You can use a standard Agilent 24542G or 24542H interface cable.

Table 2-2.RS-232 Connector

1 2 3 4 5

6 7 8 9

Pin

1

2

3

4

5

6

7

8

9

Input/Output

Output

Input

Output

Output

Common

Input

Output

Description

Reserved for service use Receive Data (RxD) Transmit Data (TxD)

Data Terminal Ready (DTR) Signal ground

Data Set Ready (DSR) no connection

no connection

Reserved for service use

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Agilent Technologies 6843A, 6834B, 6814B manual RS-232 Interface, Interface Commands, RS-232 Data Format, RS-232 Connector

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