Global Specialties RDB-10 User Manual

Decade Box

RDB-10 User Manual

 ModelRDB-10fromGlobalSpecialtiesisahandheldResistancedecadeboxthatcreatesaspecic

resistance value using a combination of switches. Designed with accuracy to meet the needs of industry and
education alike.

The RDB-10 is a compact, convenient tool for aiding in engineering design and testing as well as
calibration of test equipment.

It offers 7 decades of resistance ranges, from 1 Ω to over 11 MΩ in 1 Ω steps. Easy-to-use slide
switches allow for straightforward addition and subtraction of resistance values. RDB-10 is a passive device

that requires no power source.

Operation

Binding Post Connections

To connect the RDB-10, connect the positive lead to
the RED post and the negative lead to the BLACK
post. To make the connection, a banana plug can be
inserted directly into the posts. An alternate method
is to thread wire through the posts. In order to do
this, unscrew the post, thread your wire, and re­tighten the post as necessary. An alligator clip can be
attached to the plugs as well. Use alligator clips with

caution to avoid wearing down the posts.

Range Selection

The RDB-10 contains 28 switches organized in a 4 x 7
grid. Each row offers 7 decades of resistance ranges.
When a switch is in the ON position, the value marked
above the switch is added to the total resistance. For

example, to obtain an output resistance of 40.23 kΩ,
the switches for 40 kΩ, 200 Ω, and 30 Ω will be in
the ON position.

Testing

The RDB-10 can be used for calibration of test equip­ment due to its 1% accuracy. For calibration, set the
RDB-10 to the desired value and connect the termi­nals of your test equipment to the output of RDB-10.
The readout of the device you are testing should be

the selected resistance value (+ 0.3Ω internal resis­tance - approx.). If not, adjust the device you are

testing accordingly.

Innovative Training Solutions

Global Specialties
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
1-800-572-1028
www.globalspecialties.com

Features

> Calibrate test equipment with high accuracy of 1%
> 28 switches organized in a clean 4 x 7 grid for easy

use

> All switches clearly display a visible white dot when

in the ON position

> Includes a protective rubber holster with tilt-stand

for ease of use and viewing

> Ideal for service, prototype and experimental and

educational use

> Set at any resistance value from 1 ohm to 11

Megohms in one ohm increments

> Input terminals accept standard banana plugs, are

wires, spade lugs or alligator clips

> One Year Warranty

Specications

Resistance ranges: 1 to 11,111,110 Ω in 1 Ω steps
Internal Resistance: 0.3 Ω
Power : 1 W Resistors
Connection: Two (2) binding posts
Accuracy: 1 %
Operating conditions : Temp: 32 to 122 oF (0 to 50 oC)
Humidity: < 80 %RH
Dimensions: 6" x 3.7" x 1.9"

Weight Approx.: 0.95 lbs

RDB-10 Users Manual_ver2.indd 1 6/3/2010 1:15:54 PM