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1. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions

regarding safety.

• After reading, keep this manual handy for future reference.

OPERATING INSTRUCTIONS

IMPEDANCE METER

ZM-104A

(with carrying case)

Thank you for purchasing TOA Impedance Meter.

Please carefully follow the instructions in this manual to

ensure long, trouble-free use of your equipment.

• When leaving the unit unused for 2 weeks or more, be sure to take the batteries out of the unit because battery

leakage may cause a fire, personal injury, or contamination of environment.

• Make sure to observe the following handling precautions so that a fire or personal injury does not result from leakage

or explosion of the battery.

· Do not short, disassemble, heat nor put the battery into a fire.

· Avoid using both new and old batteries together.

· Do not solder a battery directly.

· Be sure to use the specified type of batteries.

· Note correct polarity (positive and negative orientation) when inserting a battery in the unit.

· Avoid locations exposed to the direct sunlight, high temperature and high humidity when storing batteries.

• Do not forcibly pull the unit if hung by its strap as this may cause the strap to break and the unit may fall off, possibly

resulting in personal injury.

2. SPECIFICATIONS

133-22-174-10

AA (R6) battery x 4 (1.5 V DC x 4)

39 mA

Direct reading meter, unit: Ω

x1 range: 5 , x100 range: 500 – 100 kΩ– 1 k , p1-x10 range: 50 – 10 kΩ Ω Ω Ω Ω

± 10%

1,000 Hz ± 10 %

x1 range: 30 hours

x10 range and x100 range: 60 hours

5 to +40 °C (23 to 104 °F)

Unit: 110 (w) x 180 (h) x 58 (d) mm (4.33" x 7.09" x 2.28")

Carrying case: 120 (w) x 220 (h) x 63 (d) mm (4.72" x 8.66" x 2.48")

ABS resin, black

700 g (1.54 lb) (unit and carrying case)

Test leads (red and black): 1 set

CAT

Power Supply

Current Consumption

Reading

Measurement Range

Accuracy

Oscillation Frequency

Battery Life when

continuously used

Operating Temperature

Dimensions

Finish

Weight

Accessory

Measurement Category

Notes

• Since no batteries are supplied with the unit, prepare them separately.

• The design and specifications are subject to change without notice for improvement.

Battery compartment

(Located on the bottom side)

Range selector

[RANGE SELECTOR]

Meter

0 Ω adjustor knob

[0 Ω ADJUSTOR]

0 Ω button

[0 Ω PUSH]

Measuring terminals

[ZX]

ZM-104A

Impedance can be measured in the status that the attenua-

tors on the speaker lines are operative.

Notes

• Entire operation of the attenuators and speaker lines can be

checked.

• Meter reading changes with the attenuator switch positions.

Maximum load impedance of the speaker lines can be

measured.

(This measuring condition corresponds to the state of either

All-call or an emergency broadcast.)

Note

Meter reading is constant, regardless of the attenuator operation.

[Impedance measuring methods in a 3-wire system]

Attenuators

Speakers

Step 6. Set the Range Selector to the OFF position after use.

Otherwise, the batteries run low as current continues to flow through the inner circuit.

Note on cleaning the unit

Wipe with a soft dry cloth. If it gets very dirty, use the soft cloth slightly moistened in neutral cleanser.

Never use benzene, thinner, alcohol, or chemically-treated cleaning cloth because such volatile liquids could deform or

discolor the unit.

Indicates a potentially hazardous situation which, if mishandled, could result in

moderate or minor personal injury, and/or property damage.

CAUTION

URL: http://www.toa.jp/

Traceability Information for Europe (EMC directive 2004/108/EC)

Manufacturer:

TOA Corporation

7-2-1, Minatojima Nakamachi, Chuo-ku, Kobe, Hyogo, Japan

Authorized representative:

TOA Electronics Europe GmbH

Suederstrasse 282, 20537 Hamburg, Germany

3. GENERAL DESCRIPTION

The TOA ZM-104A Impedance Meter can measure the impedance of speaker lines easily in the same manner as a

circuit tester measures resistance. It is equipped with a 3-step Range Selector which permits measuring of the

impedance in the range of 5 Ωto 100 kΩ.

4. HOW TO USE

Step 1. Before use, check to be sure that AA batteries (R6) are inserted correctly into the unit's battery compartment

(located on the bottom side).

Since no batteries are supplied with the unit, prepare them separately.

Step 2. Insert the supplied test leads into the measuring terminals.

The test leads (red and black) have no polarity.

Step 3. Set the Range Selector to x1, x10, or x100 range that is most appropriate for your measurement.

Step 4. Perform 0 adjustment. Ω

Adjust the meter pointer to 0 button. Ωby turning the 0 ΩAdjustor knob while holding down the 0 Ω

Instead of pressing the 0 button, you may short the test leads. This achieves the same result. Ω

Notes

• Perform 0 Ωadjustment each time the Range Selector is switched over to other range.

• The batteries seem to be dead if the meter will not read 0 Ω Ωeven by fully turning the 0 Adjustor knob.

Replace the batteries with new ones, then perform 0 adjustment again. Ω

Step 5. Measure the impedance.

Keep the unit in a flat or upright stable position, then securely touch the test leads to the speaker lines to be

measured.

Notes

• Do not measure the impedance while the speaker lines are connected to the amplifier as impedance cannot be

measured correctly.

• When measuring, check that no voltage is applied to the speaker line. Failure to do so may cause damage to

the unit.

Produktspecifikationer

Varumärke:	Toa
Kategori:	Inte kategoriserad
Modell:	ZM-104A
Färg på produkten:	Wit
Vikt:	3350 g
Höjd:	80 mm
Ljudnivå:	- dB
Användarmanual:	Ja
Luftfiltrering av dammsugare:	HEPA
Batterikapacitet:	3200 mAh
Diameter:	350 mm
Inkluderar AC-adapter:	Ja
Typ av dammsugare:	Zakloos
Varaktighet:	- min
Form:	Rond
Återgår automatiskt till basstationen:	Ja
Vikt basstation:	Bezig met opladen
Dammkapacitet (totalt):	0.6 l
Inkluderar basstation:	Ja
Inkluderar nätsladd:	Ja
Fungerar med Amazon Alexa:	Ja
Våtmoppning:	Ja
Understödda golvtyper:	Laminate, Linoleum, Wood
Över tröskelhöjd (max):	20 mm
Rengöringsduk:	Ja
Dammsugarprogram:	Auto, Turbo
Navigeringstyp:	Laser Distance Sensor (LDS)
Fjärrkontroll ingår:	Ja
Fungerar med Google Assistant:	Ja
Batteriteknik:	Lithium-Ion (Li-Ion)
HEPA filtersystem:	Ja
Antal sugnivåer:	3