JK Audio ComPack - Manual (Page 6)

6
Features
9. Phone Line Switch
This switch acts as the switch-hook for the telephone line. The
Hang Up position is the normal on-hook position when you are
not using the line or you are waiting for a call. When you want
to place a call, or when a call comes in, switch to the Dial/Talk
position. When using the Handset or Wireless Interface, the
switch should remain in the Hang Up position at all times.
10. Power Switch
The power switch should be left in the “Off” position any time
the unit is not being used or battery drain will occur. The unit
will retain a phone line connection if the power switch is
turned off during a call.
11. Battery Test Button / LED
To test the battery, press the Battery Test button on the side
of the unit. If the LED lights, the battery is still good. The unit
may still function if the LED does not light, but there may be
significant audio distortion and a loss of level as the battery
continues to discharge. Under normal use you should get at
least 20 hours of continuous use from one fresh 9 volt alkaline
battery.
12. Wireless / Cellular Telephones
ComPack comes equipped with a built in cellular telephone
interface. This 1/4” wireless interface jack accepts a special
1/4” to 2.5 mm cable provided with the unit. This interface will
work with any wireless phone that can accept a standard 3-
conductor headset and earpiece.
Some wireless telephones have the standard 2.5 mm jack
while others have proprietary jacks. Adapters to convert the
proprietary jack to the standard 2.5 mm jack are available for
most wireless telephones through local electronic stores, their
respective telephone dealers or many internet stores.
When using the wireless interface, it is important to keep your
wireless telephone 12”-24” away from the ComPack and any
microphone or headphone cables. This will help prevent un-
wanted RF noise from entering the unit.
11
FAQs
? How can I record my conversation?
! The balanced male XLR, in "Line Out" mode provides a nice mix
of both sides of the conversation.
? What is the Com Link used for?
! Simply slide the Male XLR function switch to Com Link and you
can connect the ComPack Male XLR to your single channel belt-
pack intercom system.
? Can I connect ComPack to a powered beltpack line?
! Yes, the ComPack has a DC blocking cap so it will not be dam-
aged if connected to a powered line, although DC power is not
necessary for operation.
? I've lost the power supply for my ComPack. I have another
power supply that fits from a different product. Can I use
this instead?
! NO! Never use a power supply other than the one that was sup-
plied by your manufacturer. Power supplies are available in ei-
ther AC or DC output with many combinations of voltage and
current. DC supplies carry either positive or negative center pin
output and may or may not be regulated. If you connect a nega-
tive center pin power supply to a positive center pin jack, it's just
like hooking up the battery cables to your car backwards. Obvi-
ously you would not want to do this to your expensive audio
equipment. Regulation is the tolerance to the specified voltage
of your DC power supply. All of our power supplies have low
noise 5% tolerance. So our 9V DC power supplies will always
output 9 volts +/- 5%, whether you are using no power at all or
applying a full load. Most consumer power supplies are not
regulated. A non-regulated 9V, 800mA power supply could actu-
ally output 16V until an 800 mA load is applied. This could dam-
age your equipment and create a great deal of noise. Also, be-
cause there is no standard for the size of your power jack, a
16VAC and a 1.5VDC power supply could both have the same
2.1mm jack.