Decade
Substituters
Resistance • Capacitance • Inductance
RS-CS-LS Series
Economical, indispensable tools for a variety of uses
in engineering, design, troubleshoo ng, or service.
These small, rugged subs tuters can sa sfy most
requirements.
Page 1 of 2
Features:
• Direct reading — No fumbling with mul ple slide or rotary
switches
The IET family of digital subs tuters uses convenient side-by-side
thumbwheel switches. Simply dial in the desired values and use.
R-Box
RS Series: Digital
Resistance Substituter
Available from 0.01
Ω
to 299,999,999.9
Ω
(RS-200 Shown)
• Standard accuracies of 1%, 0.1%, and 0.05% available.
• Broad choice of standard and op onal models.
A full line of standard subs tuters sa sfies most requirements.
• Direct readings eliminate poten al mistakes that come from
rotary or slide-switch boxes.
• For easy value readings, ranges are separated by color-
coded switches and numbers.
• The units are small, rugged, and portable.
• Combina on units, such as Resistance and Capacitance
Subs tuter (RCS-500), are available.
C-Box
CS Series: Digital
Capacitance Substituter
Available from 1 pF to 999.999 9 µF
(CS-300 Shown)
Options:
• Shielded case with grounding post
• Panel moun ng
• Protec on fuse
L-Box
LS Series: Digital Inductance
Substituter
Available from 1 µH to 99.999 99 H
(LS-400 Shown)
See also:
• Decade
box product guide
• LCR
meter product guide
RC-Box
RCS Series: Digital
Resistance-Capacitance Substituter
Combines RS and CS units in one box
(RCS-500 Shown)
IET LABS, INC.
in the
GenRad
Tradition
Long Island, NY
www.ietlabs.com
TEL: (516) 334-5959 • EMAIL: info@ietlabs.com
RS-CS-LS Box Catalog May 2017
Decade
Substituters
Resistance • Capacitance • Inductance
RS-CS-LS Series
Standard Models
RS Series -- Standard Models
Model
Type
Accuracy*
Decades
Range
Resolution
Ratings***
Residual
Components
Mechanical
A
Page 2 of 2
RS-200
RS-201
RS-200W
RS-201W
RS-200-2W
RS-201W-2W
RS-RTD
RCS-500
RCS-502
Wide-Range
Precision
Precision
Wide-Range
High-Power
High-Power Wide-
RTD
Resistance/
Resistance
Precision
Resistance/
Resistance
Resistance
Resistance
Range Resistance
Simulator
Capacitance
Resistance
Capacitance
±(1% + 25 mΩ) ±(0.1% + 25 mΩ) ±(1% + 36 mΩ) ±(0.1% + 36 mΩ)** ±(1% + 25 mΩ) ±(0.1% + 36 mΩ)** ±(0.1% + 25 mΩ)
7
0 to 9,999,999
Ω
1
Ω
≤0.39 Ω
(≤0.056
Ω/decade)
9
0 - 99,999,999.9
Ω
0.1
Ω
0.5 W (rising to 2.5 W at step 9)
≤0.5 Ω
(≤0.056
Ω/decade)
B
7
1
Ω
≤0.39 Ω
A
9
0.1
Ω
≤0.5 Ω
B
6
0-9,999.99
Ω
0.01
Ω
0.5 W
≤0.34 Ω
A
C
Combines
RS-200 and
CS-300
Combines
RS-201 and
CS-301
0 - 9,999,999
Ω
0 - 99,999,999.9
Ω
2 W (rising to 10 W at step 9)
Metal-film resistors; Manganin wire
≤0.9 Ω
CS Series -- Standard Models
Model
Type
Accuracy*
Decades
Range
Resolution
Ratings***
Residual
Components
Test Cond.
Mechanical
LS Series -- Standard Models
CS-301L
CS-300H
High
Capacitance
<100 µF:
±(4% + 3 pF)
≥100
µF:
±6%
CS-300
Capacitance
±(4% + 3 pF)
CS-301
Precision
Capacitance
<10 µF:
±(1% + 3 pF)
≥10
µF:
±(4% + 3 pF)
Model
Type
Accuracy*
Decades
LS-400A
Inductance
LS-400
High
Inductance
±(2% + 0.5 µH)
4
0 - 9.999 H
1 mH
LS-400L
Low
Inductance
6
0-999.999 mH
1 µH
Precision,
Low Capacitance
±(1% + 3 pF)
6
0 to 99.999 9 µF
100 pF
100 V (25 V for 10 - 100 µF)
7
0 - 9.999 999 µF
1 pF
100 V
3
0 to 999 mH
1 mH
0 - 999.999 9 µF
100 pF
100 V
(25 V for 10 - 1000 µF)
Range
Resolution
Frequency
Response
Residual
Components
Test Cond.
Mechanical
See
http://www.ietlabs.com/ls-series-inductance-decade-box.html
≤0.17 Ω; ≤1
µH
≤0.23 Ω; ≤1
µH
(≤0.056
Ω/decade)
(≤0.056
Ω/decade)
Toroidal Inductors
1 kHz, 0.1 Vrms; series model; 23°C
B
C
≤0.34 Ω; ≤1.5
µH
(≤0.056
Ω/decade)
≤42
pF (≤7 pF/decade)
1-900 pF: mica
1-9 µF: Polyester
≤49
pF (≤7 pF/decade)
0.001 - 0.9 µF: Polypropylene
10-900 µF: Tantalum
B
1 kHz; 1 Vrms; for
≥10
µF: 120 Hz, series model; 23°C
*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 11.6 x 6 cm; 410 g (7.4" x 4.3" x 2.4"; 14 oz)
Optional Models
RS - F - 4 - 0.1 - WC -
Type of
Substituter
RS:
Resistance
CS:
Capacitance
LS:
Inductance
(Example: 0.1
Ω
-999.9
Ω
, 1%
Resistance Substituter in a standard case)
Tolerance
A:
0.05%
B:
0.1%
C:
0.5%
F:
1%
G:
2%
H:
4%
No. of
Decades
1 to 10
Resolution
0.01Ω to 100 MΩ
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
Ω)
Other:
Consult IET Labs
1W
2W
Rating
blank:
Standard
Other:
Consult IET Labs
IET LABS, INC.
in the
GenRad
Tradition
Long Island, NY
www.ietlabs.com
TEL: (516) 334-5959 • EMAIL: info@ietlabs.com
RS-CS-LS Box Catalog May 2017
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