Contents
p. 2
Applic.
pp. 4-8
Selection
pp. 9-11
Products
pp. 12-90
GenRad
products
pp. 50-90
Index
p. 92
Decade
Substituters
Resistance · Capacitance · Inductance
RS · CS · LS · Series p. 1 of 2
Economical, indispensable tools for a variety
of uses in engineering, design, troubleshooting,
or service.
R-box
Best Substituter Value Available
RS Series
Direct reading -- No fumbling with multiple slide or Digital
rotary switches
Resistance
The IET family of digital substituters uses convenient side
by side thumbwheel switches. Simply dial in the desired Substituter
values and use.
Accurate Available from 0.01 to 299,999,999.9
In addition to standard 1% economical units, tolerances of (RS-201 shown)
0.1%, 0.05%, 0.01%, and others are available.
Broad choice of standard and optional models with
many powerful features
A full line of standard substituters will satisfy most require-
ments. Other IET families of precision products include:
- Laboratory standards
C-box
- Transfer standards CS Series
- Programmable control Digital
- RTD simulation
- High power
Capacitance
- Very high resistance Substituter
Error proof Available from 1 pF to 999.9999 µF
Since the impedance values are set and read directly, no (CS-300 shown)
mistakes can be made as with rotary or slide switch
decade boxes. No need to examine and sum groups of
switches -- simply read one number.
Color coded
Different colored switches separate the various imped-
ance ranges.
Compact, convenient, and rugged
Made of high impact plastic, these substituters are very L-box
portable and reduce clutter on a busy lab bench.
LS Series
Digital
OPTIONS Inductance
Shielded case with grounding post Substituter
Available from 1 µH to 99.99999 H
Panel mounting (LS-400 shown)
Low residual impedance switch
Protection fuse
Programmable control (See p. 23)
The RC-box, shown on the right, combines the
features and specifications of both the R-box
and the C-box in one convenient package.
RC-box
Ideal for setting timers, oscillators, and filters, RCS Series
the resistance and capacitance may be used
independently, in series, or in parallel. A short-
Digital Resistance-
ing link allows them to be coupled or separated. Capacitance
Substituter
Combination Resistance-Capacitance
(RCS-500 shown)
IET LABS, INC. in the GenRad Tradition
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
12
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
Contents
p. 2
Applic.
pp. 4-8
Selection
pp. 9-11
Products
pp. 12-90
GenRad
products
Index
p. 92
Decade
pp. 50-90
Substituters
Resistance · Capacitance · Inductance
RS · CS · LS · Series p. 2 of 2
SPECIFICATIONS - STANDARD MODELS
Model RS-200 RS-201 RS-200W RS-201W CS-300 CS-301 RCS-500 RCS-502 LS-400 LS-400A
Wide Range Precision
Type of Resistance Precision Wide Range Precision Capacitance Precision Resistance Resistance- Wide Range Inductance
Substituter Resistance Resistance Resistance Capacitance Capacitance Capacitance Inductance
Accuracy* ±(1%+25 m) ±(0.1%+25 m) ±(1%+30 m) ±(0.1%+30 m) ±(4%+3 pF) ±(1%+3 pF) ±(2%+0.5 H) ±(2%+0.5 H)
Decades 7 9 6 4 3
Range 0 - 9,999,999 0-99,999,999.9 0 - 99.9999 F 0 - 9.999 H 0 - 999 mH
Resolution 1 0.1 100 pF Combines Combines 1 mH 1 mH
RS-200 RS-201
100 - 900 pF: mica
and CS- and CS-
Metal film resistors; wirewound or resistance wire for 0.9 0.001 - 0.009 F: polystyrene
Type of 300 301 Toroidal Inductors
and under 0.01 - 0.9 F: polycarbonate
Components 1 - 9 F: polyester
10 - 90 F: polarized tantalum
Ratings 0.5 W** 100 V (20 V for 10 - 100 F) See table below
Residual
Impedance 0.3 (0.04 /dec.), typical 0.3 (0.04 /dec.), typical 30 pF(5 pF/dec) typical 0.2 (0.04 /dec.), typical
8.1 x 7.9 x 5.6 cm; 184 g 12 x 7.9 x 5.6 cm; 235 g 12 x 7.9 x 5.6 cm; 235 g 18.8 x 11 x 6 cm, 410 g 12 x 7.9 x 5.6 cm, 230 g
Physical
(3.2 x 3.1 x 2.2 in; 6.5 oz.) (4.7 x 3.1 x 2.2 in; 8.3 oz) (4.7 x 3.1 x 2.2 in; 8.3 oz) (7.4 x 4.3 x 2.4 in, 14 oz) (4.7 x 3.1 x 2.2 in, 8 oz)
* Accuracy after subtraction of the Residual Impedance; Additional information for Inductance Substituters
traceable to NIST.
LS-400 and LS-400A Test Conditions: 1 kHz; 1 Vrms; Inductance Frequency Range Max. Q Rating
series model; 23oC. 0.1 - 0.9 mH 300 Hz - 2 MHz 100 @ 800 kHz 700 mA
** Higher power resistance substituters (1 W or higher) available; 1 - 9 mH 300 Hz - 1 MHz 80 @ 40 kHz 500 mA
see optional models below or HPRS data sheet. 10 - 90 mH 300 Hz - 800 kHz 80 @ 40 kHz 300 mA
Residual Impedance may be reduced to 0.04 or 5 pF for 0.1 - 0.9 H 300 Hz - 200 kHz 40 @ 20 kHz 100 mA
lowest decade with LR Option. This makes for more effective
1-9H 200 Hz - 20 kHz 30 @ 8 kHz 20 mA
usage at low impedances. Lowest decade is isolated from
others with a switch when desired. 10 - 90 H 200 Hz - 6 kHz 60 @ 2 kHz 4 mA
OPTIONAL MODELS
In order to satisfy any requirements for decade substituters, construct a part number from the table below, or consult
IET Labs. RS - F - 4 - 0.1 - WC - a (Example: 0.1 - 999.9 , 1%,
Resistance Substituter in a standard case)
Type of Tolerance No. of Impedance per Step Packaging Rating
Substituter X:* 0.01% Decades for Lowest Decade WC: Packaged in a standard Blank: Standard
RS: Resistance Q: 0.02% 1 to 10 0.01 to 100 M (in ) case with binding posts rating
CS: Capacitance A: 0.05% 1 pF to 100 µF PM: Supplied without case OTHER: Specify
LS: Inductance B: 0.1% 1 µH to 10 H for panel mounting or
C: 0.5% other application
F: 1%
G: 2%
H: 4%
* See HARS and HACS Series for standards grade resistance and capacitance substituters.
OPTIONS
-CC-25 Dual Lead Clip - plugs into dual binding posts for convenient -LP Unit supplied with low profile binding post
lead connections
-LR Residual Impedance is reduced to 0.04 or 5 pF on lowest decade OTHER VERSIONS
-SC Shielded case with grounding terminal Programmable Version See PRS/PCS/PLS data sheet (p. 17)
-PM Panel mounting version High Power Version See HPRS data sheet (p. 16)
-FP Unit supplied with series 2 A fuse for added protection (User High Accuracy Version See HARS data sheets (p. 11)
may substitute other fuses; residual impedance will increase High Resistance Version See HRRS data sheet (p. 15)
by 0.06 for 2 A fuses)
IET LABS, INC. in the GenRad Tradition
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
13
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de