IET LABS, INC. in the GenRad Tradition

www.ietlabs.com

TEL: (516) 334-5959 • EMAIL: info@ietlabs.com

Programmable Resistance - Capacitance -

Inductance - RTD Decade Substituter

PRS-PCS-PLS-PRTD Series

Page 3 of 5

PRS Catalog Nov 2021

REMOTE CONTROL AND PROGRAMMING

Remote Control Options:

IEEE-488:

GPIB interface features

*IDN? and cal date query, allow-

ing you to improve your instrument

and calibration tracking capabilities.

GPIB addressing is controlled via

DIP switches or commands on the

GPIB bus.

RS232: This interface conforms to

EIA-STD-RS-530; with a 25 pin DTE

interface.

The PRS is a standard DTE device

in RS232 mode. Connection to a PC

is made via a null-modem cable.

Ethernet: This interface conforms to

IEEE 802.3

When equipped with any remote con-

trol functionality, the PRS front panel

switch determines if REMOTE mode is

enabled. Regardless of remote control

type, setting the front panel switch to the

LOCAL position always disables the

remote control “set” value.

Supported commands include: *IDN?,

*CLS, *ESE?, *ESR?, *IDN?, *RCL,

*RST, *SAV, *STB?, SYST: ERR?,

CAL:DATE? and SOURce:DATA <VAL-

UE>

The remote output value is set by

sending a ‘SOURCe:DATA’ command

followed by a string that represents the

digits as they would be selected using

the thumbwheels. Leading and trailing

zeros are required to set each decade

properly; the decimal point is not used.

LABVIEW DRIVERS AND SOFTWARE

LabVIEW instrument drivers are avail-

able for units equipped with GPIB or

RS232C options. These drivers are

written based on the National Instru-

ments instrument template, using VISA

handles and standard initialize, config-

ure and query functions.

To aid the user in operating the PRS/

PCS/PLS, two “Keyboard” Controller

programs - the easiest way to control

GPIB or RS232 devices without writ-

ing a program - are available from IET.

This Keyboard programs automatically

finds your device at start-up and it lets

For example; the PRS-202-IEEE has

a least significant digit value of 1 mΩ

and a remote logic maximum of 12

command decades. To set a value

of 50,000.045 Ω, the command string

would be:

SOURCe:DATA 000050000045

The PRS-201 & PRS-202 RS-232 has

a least significant digit value of 0.1 Ω

and a remote logic maximum of 10

command decades. To set a value of

2,500.8 Ω, the command string would

be:

SOURCe:DATA 0000025008

you enter just the data that you want to

send to the device. This program works

with ICS and National Instruments GPIB

cards.