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HIGH POWER ALARM is a third common alarm. Same as the LOW POWER ALARM, it allows to set three
different POWER values to trip three importance levels (WARNING, ALARM, FAULT) for each band
separately as well as provides two power ranges where different power levels can trip different alarm levels.
Contrary to the LOW POWER ALARM which trips when power is lower than tripping level, the HIGH POWER
ALARM trips when power exceeds tripping level. Lets take our 160m example once again for explanation.
You operate barefoot with 100W transceiver, and also use an amplifier which needs to be driven by at least 50W
to get 1200W output on 160m. If amplifier is overdriven it starts to generate unwanted IMD products, when it is
under driven it generates less power than desired. HIGH POWER alarm can watch to not over drive the
amplifier.
Minimal POWER FROM value is set to 52W, W-PWR is set to 55W, A-PWR to 60W and F-PWR to 90W. It
means, if power is below 52W, SMΩRF will not generate any HIGH POWER alarm, but if power rises and is in
range from 52-55W, it generates WARNING. In range from 55-60W it generates ALARM and in range 60-90W
FAULT. Above 90W it again doesn't generate HIGH POWER alarm up to 2
operating at 100W level without amplifier will not trip any alarm. This first range is useful for high driving power
alert.
Second range, minimal POWER FROM is set to 1220W, W-PWR to 1250W, A-PWR to 1300W and F-PWR to
1500W. While power will be lower than 1220W, everything will be OK and no HIGH POWER alarms will be
generated. However, if power rises and be in between 1220-1250W, SMΩRF will generate WARNING, indicating
that the amplifier is being overdriven. If power rises even higher, and be in 1250-1300W range it will generate
ALARM for higher attention (ALARM level is set to generate display alert) and if rises even more and be in range
between 1300-1500W, than it generates FAULT, indicating seriously overdriven amplifier generating a lot of IMD
products. Since the HIGH POWER alarm trips dangerous situations, TX BREAK is enabled for FAULT levels,
and reset is set to MANUAL to keep alarm pop-up window on screen to not miss it.
CONTROLS:
POWER FROM 1
1.
Sets the lowest power for the 1
POWER FROM 2
2.
Sets the lowest power for the 2
W-PWR
3.
Sets the upper margin for the WARNING alarm level. Value has to be higher than the power value in the
POWER FROM cell.
A-PWR
4.
Sets the upper margin for the ALARM level. Value has to be higher than the power value in the
WARNING cell.
F-PWR
5.
Sets the upper margin for the FAULT alarm level. Value has to be higher than the power value in the
ALARM cell.
Hint:
If you want to turn some importance levels off, set both margins to the same value. For example, if you don't
want to generate alarms for first two importance levels (WARNING, ALARM) in the first power range, set
POWER FROM and W-PWR margin to same value as has A-PWR, i.e. 60W. It will looks like 60/60/60/90W and
only FAULT will be generated in range from 60-90W. Or you can set 60/90/90/90W, than only WARNING will be
generated in range from 60-90W.
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ALARM 1 MENU – HIGH POWER ALARM
st
RANGE
st
power range up from alarms will be generated.
nd
RANGE
nd
power range up from alarms will be generated.
range POWER FROM value, so
nd
62
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