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 4 of 5

PRS Catalog Nov 2021

SPECIFICATIONS

User interface: Front panel switch selects REMOTE

(Optional: IEEE-488 , Ethernet or RS-232 interface) or

LOCAL (front-panel thumbwheel) operation.

Accuracy: The accuracy shown in the chart below

applies after subtraction of the "zero setting" residual

impedance.

Accuracy (PRTD): The absolute accuracy indicated be-

low applies without requiring subtraction of "zero setting"

residual impedance.

Min. setting (PRTD): 4 Ω or customer specified.

Thermal emf: < 15 µV; < 10 µV, typical.

Terminals:

Four low-emf, gold-plated, tellurium-copper 5-way

binding posts are used for HI and LO terminal pairs

for CURRENT and SENSE. GND binding post is con-

nected to the case, to the chassis ground and to the

earth ground. Rear outputs are available with the RO

option.

Switching time: <4 ms per change; <7 ms for ≤0.05%

units.

Power requirements: 90 - 264 Vac , 47 - 63 Hz.

30 Watts Max.

Dimensions: Bench model: 22 cm W x 12 cm H x 24

cm D (8.5" x 4.44" x 9.25") Rack model: Panel: 48.3 cm

W x 13.2 cm H (19" x 5.2"); behind panel: 42.7 cm W x

12.4 cm H x 31.5 cm D (16.8" x 5.2" x 12.4"); in front of

panel: 3.8 cm (1.5").

Weight: Bench model: 2.0 kg (4.5 lb); Rack model: 4.5

kg (10 lb); Dual rack mount model: 6.4 kg (14 lb); weight

specifications are nominal.

Remote Control Options:

IEEE: GPIB standard 24 pin connector, conforms to

IEEE-488.2; SCPI 1994.0 command set; Hardware

or software configurable addressing range of 0 to 30.

RS232: 25 pin male DTE interface conforms to EIA-

STD-RS-530; SCPI 1994.0 command set; data rates

from 300 to 115200 bps.

Ethernet: IEEE 802.3 compliant, Speeds 10 BaseT

(10 Mb/s) and 100 BaseT (100 Mb/s), IP Address

Static or DHCP, Factory setting 192.168.1.254 static

Model

PRS-200

PRS-201

PRS-200W

PRS-201W

PRS-202

PRS-202W

PRTD

PCS-300

PCS-301

PLS-400

PLS400A

Type

Resistance

Precision

Resistance

Wide-

Range

Resistance

Wide-Range

Precision

Resistance

High-Precision

Resistance

Wide-Range

High-Precision

Resistance

Precision

Absolute-Value

Resistance

Precision

Capacitance

Wide-Range

Capacitance

Wide-Range

Inductance

Inductance

Accuracy

1% +70 mW

0.1%+ 30 mW

1%+ 70 mW

0.1%+ 30 mW

0.05% + 15 mW (0.01% optional)

.05% + 10 mW

4% + 5 pF

1% + 3 pF

2%

Decades

7

9

7

9

6 or more

6

4

3

Range

0 - 9,999,999 W

0 - 99,999,999.9 W

0 - 9,999,999 W

0 - 99,999,999.9 W

4-10,003.99 W

0 - 99.999 9

µF

0 - 9.999 H

0 - 999 mH

Resolution

1 W

0.1 W

1 W

0.1 W

0.01 or 0.001 W

100 pF

1 mH

Type of

Compo-

nents

Resistance wire for 0.1 W steps and under

Precision metal film for 1 W steps and over

Resistance wire for 0.1 W steps and under

Wirewound, sealed non-inductive resistors

for 1 W to 100 kW steps *;

Precision metal-oxide film resistors for 1 MW steps and

over

100-900 pF: Mica

0.001-0.009 µF: Polystyrene

0.01-0.9 µF: Polycarbonate

1-9 µF: Polyester

10-90 µF: Polarized tantalum

Toroidal inductors

See inductance Substituters

for specifications

Max. Load

0.5 A, 200 V (dc + ac peak), 0.2 W/step, 2 W unit, which-

ever applies first.

3 A, 200 V (dc + ac peak), 0.5 W/step,

4.5 W/unit, whichever applies first.

100 V (20 V for 10-100 µF)

Residual

Imped-

ance

<450 mW

<600 mW

<100 mW

<140 mW

typ. <100 mW

Absolute Value

7 pF, typ. higher with Rear

Output

<1 µH

* PRS with accuracy of 0.1% to 4% use precision metal film resistors for 1 W steps and over