Decade

Substituters

RS-CS-LS Series

Page 2 of 2

Resistance • Capacitance • Inductance

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RS-CS-LS Box Catalog Dec. 2021

Model

RS-200

RS-201

RS-200W

RS-201W

RS-200-2W

RS-201W-2W

RS-RTD

RCS-500

RCS-502

Type

Resistance

Precision

Resistance

Wide-Range

Resistance

Wide-Range

Precision

Resistance

High-Power

Resistance

High-Power Wide-

Range Resistance

RTD

Simulator

Resistance/

Capacitance

Precision

Resistance/

Capacitance

Accuracy*

±(1% + 25 mW) ±(0.1% + 25 mW) ±(1% + 36 mW) ±(0.1% + 36 mW)** ±(1% + 25 mW) ±(0.1% + 36 mW)** ±(0.1% + 25 mW)

Combines

RS-200 and

CS-300

Combines

RS-201 and

CS-301

Decades

7

9

7

9

6

Range

0 to 9,999,999 W

0 - 99,999,999.9 W

0 - 9,999,999 W 0 - 99,999,999.9 W

0-9,999.99 W

Resolution

1 W

0.1 W

1 W

0.1 W

0.01 W

Ratings***

0.5 W (rising to 2.5 W at step 9)

2 W (rising to 10 W at step 9)

0.5 W

Residual

£0.39 W (£0.056 W/decade)

£0.5 W (£0.056 W/decade)

£0.39 W

£0.5 W

£0.34 W

Components

Metal-film resistors; Manganin wire £0.9 W

Mechanical

A

B

A

B

A

C

Standard Models

Model

CS-300

CS-301

CS-301L

CS-300H

Type

Capacitance

Precision

Capacitance

Precision,

Low Capacitance

High

Capacitance

Accuracy*

<10 µF: ±(4% + 3 pF)

³10 µF: ±7%

<10 µF: ±(1% + 3 pF)

³10 µF: ±7%

±(1% + 3 pF)

<10 µF: ±(4% + 3 pF)

³10 µF: ±7%

Decades

6

7

Range

0 to 99.999 9 µF

0 - 9.999 999 µF

0 - 999.999 9 µF

Resolution

100 pF

1 pF

100 pF

Ratings***

100 V (25 V for 10 - 100 µF)

100 V

100 V

(25 V for 10 - 1000 µF)

Residual

£42 pF (£7 pF/decade)

£49 pF (£7 pF/decade)

Components

1-900 pF: mica

0.001 - 0.9 µF: Polypropylene

1-9 µF: Polyester

10-900 µF: Tantalum

Test Cond.

1 kHz; 1 Vrms; for ³10 µF: 120 Hz, series model; 23°C

Mechanical

B

Model

LS-400A

LS-400

LS-400L

Type

Inductance

High

Inductance

Low

Inductance

Accuracy*

±(2% + 0.5 µH)

Decades

3

4

6

Range

0 to 999 mH

0 - 9.999 H

0-999.999 mH

Resolution

1 mH

1 mH

1 µH

Frequency

Response

Residual

£0.17 W; £1 µH

(£0.056 W/decade)

£0.23 W; £1 µH

(£0.056 W/decade)

£0.34 W; £1.5 µH

(£0.056 W/decade)

Components

Toroidal Inductors

Test Cond.

1 kHz, 0.1 Vrms; series model; 23°C

Mechanical

B

C

RS Series -- Standard Models

CS Series -- Standard Models

LS Series -- Standard Models

*Accuracy:

After subtraction of residual impedance

Traceable to SI

**Accuracy for RS-201W & RS-201W-2W:

<10 MΩ: as shown above

≥10 MΩ: 0.2%

***Rating:

Subject to switch maximum dielectric strength of 750 Vdc peak

or 550 Vrms, switching

Switches:

10-position thumbwheel switches

make-before-break

Maximum switch voltage:

750 Vdc peak or 550 Vrms, switching

Mechanical:

A: 8.1 x 7.9 x 5.6 cm; 184 g (3.2" x 3.1" x 2.2"; 6.5 oz)

B: 12.1 x 7.9 x 5.6 cm; 235 g (4.7" x 3.1" x 2.2"; 8.3 oz)

C: 18.8 x 8.4 x 6.4 cm; 410 g (7.4" x 3.3" x 2.5"; 14 oz)

Optional Models

Type of

Substituter

RS: Resistance

CS: Capacitance

LS: Inductance

Tolerance

A: 0.05%

B: 0.1%

C: 0.5%

F: 1%

G: 2%

H: 4%

No. of

Decades

1 to 10

Resolution

0.01W to 100 MW

1 pF to 100 µF

1 µH to 10 H

Packaging/Options

WC: Standard

PM: Panel Mount w/out case

SC: Shielded Case

FP: Supplied with 2A fuse

(residual increases by 0.06 W)

Other: Consult IET Labs

Rating

blank: Standard

1W

2W

Other: Consult IET Labs

RS - F - 4 - 0.1 - WC -

( E x a m p l e :

0 . 1 Ω

- 9 9 9 . 9

Ω ,

1 %

Resistance Substituter in a standard case)