Transmitter Battery Management - SABINE SWM7000 Operating Manual

1. ON/OFF. In internal position #1, the external switch acts as a typical
on/off switch. Use this setting if you trust the microphone user to switch
the microphone on and off as needed, and/or wish to conserve transmitter
battery life during down times. In the ON position the transmitter LCD
will display ON. Both audio and RF are on. In the OFF position the LCD
ON is no longer illuminated. Both RF and audio are off, and the battery
run-time hours meter is off. Note that Sabine's squelch system prevents
any "popping" when switching the transmitter on and off. However, this
protection causes a very short "power-on" delay in the reactivation of the
audio when the external switch is turned from OFF to ON.
2. ON/MUTE. In internal position #2, the external switch acts as a typical
mute switch. Use this setting if you trust the microphone user to switch
the microphone audio output on and off as needed; it will not conserve
battery life in MUTE condition, but will allow the receiver to monitor and
display the RF signal strength in either switch position. In the on position
the default LCD will display ON. Both audio and RF are on. In the off
position the word MUTE is displayed in the LCD. The audio is muted but
the transmitter is still transmitting the RF signal, and the battery run-time
meter is running. There are no audible pops when switching the transmitter
between MUTE and ON. Switching from MUTE to ON will instantaneously
pass audio signal (there will be NO delay as with internal position #1).
3. ON/ON. In internal position #3, the external switch is disabled. The
transmitter (both RF and audio) is always on, and the word ON is always
displayed in the transmitter LCD screen. Use this setting if you do not
want to allow the speaker or performer to turn off the transmitter, or are
worried that a transmitter may be accidentally turned off. Caution: When
your program is over we suggest you move this switch to another setting
so you can turn off the transmitter and save your battery. You may also
elect to remove the battery (though replacing the same one will restart
the run-time meter and affect its accuracy accordingly).
Once you have completed the transmitter setup, you are ready to work with your
receiver (see Section 5). First, however, let's talk about the issues and solutions
concerning the source of transmitter power: the battery.

4.2.4. Transmitter Battery Management

4.2.4.1. Battery problems and Sabine solutions
Rechargeable Battery memory. Batteries that are repeatedly recharged
prior to a complete discharge may fail more quickly in subsequent uses.
This problem is usually referred to as "battery memory."
Sabine's innovative Tireless Wireless™ Charger takes steps to avoid this
problem, by automatically reconditioning the battery whenever its intelligent
diagnostics determine this is appropriate. Sabine's Tireless Wireless™
Charger will insure maximum life per battery charge, and also prolong the
useful multiple-charge life span of rechargeable batteries.
Battery life. Both handheld and beltpack transmitters can work with
disposable alkaline, disposable heavy-duty (manganese dioxide-carbon
zinc), or rechargeable Nickel Metal Hydride (NiMH) batteries. We specifi-
cally caution against using NiCad rechargeables due to well-known battery
memory problems, and specifically recommend using the Sabine-supplied
SWBAA2 (AA for the H1 Series handhelds and beltpack) batteries. The
rechargeable SWBAA2 batteries will last about 8 hours per recharge
(typically, alkaline AA batteries will last about 10 hours). NOTE: Heavy-
duty batteries will fall somewhere in the middle, between rechargeables
and alkalines.
Transmitter operation
The SW65 & 75-T beltpack transmitter has a
broad range of PAD settings, which allow you
to use it with almost any microphone or instru-
ment. As in all audio equipment, the setting of
the input level is crucial to achieving the best
sound quality. Setting minimal PAD levels (-3,
-6, or -10 dB) may produce a distorted sound if
you are using a high output microphone or in-
strument. Conversely, setting a more extreme
PAD level (-40, -37, or -34 dB) may require
you to raise your system gain unnecessarily,
resulting in a noisier output. Watch the input
meter on either the transmitter or the receiver
(see illustrations) and set your level so there
are at least three indicators illuminated for
normal program level, with an occasional move
to the fourth indicator. The fifth and biggest
indicator denotes clipping – watch out! If you
see clipping, choose a lower pad setting (for
example, from -10 to -14 dB).
Transmitter PAD Adjustment
(See Fig. 4c, 4f & 4g)
1. Use the Transmitter Select button to scroll
through functions until PAD flashes in the
Transmitter LCD.
2. Use the Up or Down buttons to select the
desired setting. Selection is stored after 3
seconds of inactivity.
3. Check to see if the receiver's Audio Level
Meter stays out of the Clipping Zone.
Venue
Low output microphones
Standard mics; acoustic
instruments with low-gain
pickups
Fortunately,
Electric guitars with low-
gain pickups & mics with
higher gain
Most standard electric
guitars
Instruments with high-
gain pre-amps
See the Transmitter Quick Guide
that came with your transmitter
for a complete look at the sug-
gested pad settings. Default pad
setting is -30 for SW65 & 75-T.
17
Beltpack Transmitter
PAD Settings
Suggested PAD Settings
-10 dB
-17 dB
-23 dB
-26 to -34 dB
-37 dB
Sabine Smart Spectrum Wireless
®
LIT-SWM6-7000-OG-EN-110203.indd
PAD