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SYSTEM CHECK MODE
System check Mode is included for audible testing of
larger speaker installations. It allows the Q 2003 to run at
full output for a period of approximately 6 minutes so the
installer can walk around the install to check sound is present
on all speakers.
To activate this mode connect the test leads to the load to be
checked, ensure that an amplifier is not connected. Make
sure the Q 2003 is OFF then press the TEST button and hold
for 5 seconds. "SYSTEM CHECK" will display on the LCD
and a 1kHz tone will be put out the test leads.
SWITCHING OFF
To switch off the Q 2003 all you need to do is press the TEST
button again. The LCD will display "OFF" for a short time
then the unit will power down. The Q 2003 is also equipped
with an auto power off function. The unit will automatically
power down after a period of 20 seconds in Single test
mode and 6 minutes in System check mode, saving precious
battery life.
BATTERY INSTALLATION AND OR CHARGING
"LOW BATTERY" will display on the LCD when the battery
requires replacing or if a rechargeable 9V Nicad/Nimh battery
(such as the Altronics S 4740C, not supplied) needs charging.
To replace or install the 9V (type 216) battery required to
power the Impedance Meter, simply slide off the battery
compartment on the back of the unit. Remove and unclip
the old battery from the connector and replace it with a fresh
battery. Slide the cover back until it locks into place.
i
About 70V & 100V Line Speaker Systems
Wiring speakers in parallel for 70/100V line: Where several speakers are to
be used at one time, on one circuit, it becomes necessary to use speakers tted
with line-matching transformers. This is to overcome the effects of connecting
speakers in parallel and cable losses. The ampli er generally has an output
voltage of 100 volts (70 volts is typically used in North America, however
operation is similar). In this con guration the total wattage load on the ampli er
is derived from adding all the line transformer primary tap ratings together. For
example, 70 one watt speakers will have a total speaker load of 70 watts. Or
alternatively, it is conceivable to connect 100 one watt speakers to a 100 watt,
100 volt line ampli er.
Measuring 70/100V Line Speaker Impedance: To measure ampli er system
load, you must use an impedance meter in order to measure the ac resistance
of the connected speaker network. Impedance cannot be measured with a
standard multimeter, as this measures the dc resistance. Use the Altronics
Q 2001 or similar impedance meter.
Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia. Phone: 1300 780 999 Fax: 1300 790 999
Redback® Proudly Made In Australia
2
To recharge an installed Nicad/Nimh battery connect a
12VDC source (car battery, cigarette lighter socket or plug
pack) >300mA with a 2.1mm centre positive plug to the
charging socket located on the top of the Q 2003.
"CHARGING" will display on the LCD along with the charge
%. When the charge % reaches 100%, the unit will stop
charging and display "CHARGE FINISHED" on the LCD. The
charger can then be unplugged. The inbuilt charging circuit
is a slow charger and will take up to 12 hours to charge a
completely flat battery.
NOTE:
1) The Q 2003 will not function as an Impedance meter when
charging.
2) The charger can be removed at anytime during charging
though battery life will suffer.
3) The Q 2003 will still function when "LOW BATTERY" is
being shown on the LCD but the measured results may be
out by as much as 10%.
IMPORTANT GUIDELINES:
Don't connect the meter to a line that has an amplifier
attached to it. The impedance of the output transformer
of an amplifier is extremely low and you could be easily
be looking for a non-existing short.
Don't connect the meter to an active line. You will
damage the meter with the applied voltage.
Don't continue to use a battery once the "LOW
BATTERY" is being shown on the LCD. The readings
you will get will be incorrect.
* Specifications subject to change without notice.
Load
70V
100V
0.5W
9.4k
20k
0.66W
7.12k
15k
1W
4.7k
10k
1.25W
3.76k
8k
2W
2.35k
5k
2.5W
1.88k
4k
3W
1.56k
3.3k
5W
940
2k
7.5W
626
1.3k
10W
470
1k
15W
313
666
20W
235
500
30W
156
333
40W
117
250
60W
78
166
100W
47
100
125W
37
80
250W
19
40
500W
9.4
20
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