Toa ZM-104 Specifications

IMPEDANCE METER

FEATURES

n measures speaker line impedances
n fully portable
n easy operation
n wide coverage: 5 - 100,000
n reliable
n compact and lightweight

SPECIFICATIONS

Direct (indicated ohms on meter)
Reading Method
x 1 range 5-1,000
Measurement Range
x 10 range: 50-10,000
x 100 range: 500-100,000
kHz ±10%
1
Oscillation Frequency
+10%
Accuracy
Four "AA" size (UM-3) batteries
Power Supply
(6 volts)
x 1 range...30 hrs.
Service Life, when
x 10 range, 100 range...60 hrs.
continuously used
4.53(115) W x 7.32(186) D
Dimensions in in. (mm)
x 2.16(55) H
lbs.(960 gr)
Weight (with batteries) 2.1
1 Carrying case
Standard Accessories
1 set, Measuring leads
1 impedance-power chart
TOA Electronics, Inc.
ZM-104
TOA Electronics, Inc., 601 Gateway Boulevard, Suite 300
South San Francisco, California 94080
Telephone: (415) 588-2538
Fax: (415) 588-3349

DESCRIPTION

The TOA Impedance Meter, ZM-104, has been designed
to measure impedances in the speaker lines in sound
systems. It is fully portable and is operated from internal bat-
teries. This handy meter provides accurate direct readings
in the manner of a circuit meter, simply by disconnecting the
speaker line from the amplifier and connecting it to the
measuring leads.
The range selector switch allows selection of three ranges,
from five to one hundred thousand
selector switch is transferred, zero
before operation.
Its accuracy is less than plus or minus ten percent on all
ranges. The ZM-104 requires one battery change only after
more than 30 hours of continuous use.
The ZM-104 is supplied with a convenient Impedance Out-
put Chart.
The entire unit is sturdy, light and easy to carry. It weighs
a mere 2 pounds.
Each time the range
adjustment is necessary
Specifications are subject
to change without notice.
PRINTED IN U.S.A. 6-94-G