TM 5-3610-285-14
CHAPTER 7
DIGITAL DENSITOMETER
Section I. INTRODUCTION
7-1.
GENERAL INFORMATION.
7-1.1
Scope.
a.
Model Number and Equipment Name. Model RD/TD-144 Digital Densitometer.
b.
Purpose of Equipment. To measure color and black and white densities.
7-1.2
Glossary.
Cathode
The negative electrode of a tube or diode.
Dynode
An electrode that amplifies current by means of
secondary electron emission in an electron tube.
Photomultiplier Tube
A light sensitive, amplifying phototube with one
or more dynodes between its photocathode and
the output electrode.
7-2.
EQUIPMENT DESCRIPTION.
7-2.1
Equipment Characteristics, Capabilities, and Features.
a.
Independent filter calibration controls.
b.
Quick-disconnect probe cable connector.
c.
115 V ac or 220 V ac operation.
d.
Solid-state circuitry.
e.
Digital readout.
f.
Readout hold.
g.
Self-contained.
7-1
