How To Use The Operating Period Timer - Multiplex Profi MC 3010 User Manual

The second line:
r:r. i4r.IllIIII
8.24 Y = transmitter battery vohage. The digital value is
very accurate, but unfortunately not easy to assimilate
at first glance - a drawback of all digital displays. lm-
mediately after a full charge the voltage is about 8.2 -
8.4 V. At 6.9 Volts the battery monitor trips, and the bat'
tery should be recharged.
Next to the digital display is a "bar" consisting of up to 6
"boxes". This is an analogue version ol the digital volt
age display; it is easier to understand at a glance, but it
isnot so accurate. Consider it as a rough indicator of bat-
tery voltage. The battery discharges steadily while you
are using the transmitter,
and at the same time the boxes
are gradually erased from right to left; i.e. the bar be-
comes shorter. Because of manujacturing tolerances,
and lhe inherently approximate nature of the bar, the dis-
play is not as accurate and reliable as the digital display,
but it gives you a useful idea ol how things are going.
After the bar display:
r l r l : 2 +
A very useful leature:
The operating period display
At any time you can see how long the transmitter has
been in use since the last time the timer was reset to
zero (you can do that at any time - see the next section
on this page for more details).
The timer is cumulative, and it makes no difference how
often you switch the transmitter on and ofl; the operat-
ing period timer stops counting when you switch off,
and continues when you switch on again.
In practice the best way of managing the timer is as foF
lows: set it to zero every time you recharge the battery
The display shows hours : minutes.
How to use
the operating period timer
There is not much to say about this timer; all you can do
to it is reset it to zero. To do this (starting trom the Status
display) press E Z f] . You will now be at the operating
oeriod timer menu:
-- Ü F E F I. FE FI I LItI- -
EE:;ET: Et:l: ltit r
Press the Z key; the value displayed will change to
00:00, and you are done.
Return to the Status display with @ El El .
The operating period display is in the form
hours : minutes.
There is nothing else to worry about concerning this
timer. When the transmitter is switched off, it records
the last displayed time and starts again from the re-
corded value next time you switch on.
When should I reset the display?
The timer can count uo to 99 hours 59 minutes, then it
starts again from zero. That's by no means long enough
to measure the lifetime of the transmitter, although it
might be enough for "occasional flyers" to count their
flying time per season.
It makes most sense to reset the timer to zero every
time you give the transmitter battery a lull charge. The
transmitter's operating period lrom a full charge is
around four hours, so the display gives you quite an ac-
curate idea of how much longer you can fly. But please
only consider this value as a guide. Slight differences in
batteries and in the transmitter's current consumption
can result in variations of up to +/- 20010. Your best bet
is to carry out a practical experiment to determine how
long your own transmitter actually lasts.
How to switch between the transmis-
sion modes PPM7, PPM9 and PCM
The transmitter can be used with both PPM receivers
(e.9. "UNl 9") and with PCM units (e.9. 'PCM DS').
You have to set the transmission mode to match the
type of receiver you wish to use.
This is how you do it:
From the Status Display press EIZZ to arrive at the
"PPM/PCM" display.
You will see this:
l'lUttLlLHT
I ül'lr FFI'1fu
Press the E key. "PPM7", 'PPMg" (or "PCM") will
start to flash.
Press the E key. PPM will change to PCM (or vice
versa). That's all there is to it. Use the E or El key to
change from PPM 7 to PPM 9 and back.
Press El three times to get back to the Status Display.
It is only necessary to switch to PPM 7 if you wish to
use a receiver which cannot decode 9 channels (e.9.
4/6 channel receivers buill in 1979). lf you attempt to use
this type of receiver with the transmitter set to PPM I,
the servos attached to outputs 1 + 2 will not work cor-
rectlv
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