User's Manual

545C Operations Manual
02/10/2012
22
© 2012 Meteorcomm LLC.
All computers and printers contain high
spurious signals throughout the 37
if any of these signals couple into the antenna at the MCC
frequency.
To minimize this type of interference, try to keep the
antenna away from computers by at least 100
noise blanker does not suppress computer
External Signal Interference
This type of interference occurs whenever another transmitter produces
harmonics at the receiver center frequency of the MCC
nu
lling and spatial separation can be used to reduce this type on
interference.
Note:
With XTermW installed (see Section 3.3), the STAT
command can be used to determine the site antenna noise levels.
Ideally, the background noise levels should be less than
4.1.2
DC Power Source
The MCC-
545C requires a 12 VDC power source
current is about 80 mA
amps for 100 msec
the average current requ
without GPS option) when operating at a normal duty cycle of 10%
automobile battery provides an excellent power source.
If there is no AC power available, a solar panel can be used to charge
the battery. The
size of the solar panel is determined by the solar
radiation available at the location of the site
USA, a 30 watt solar panel will suffice
winter temperatures are below freezing, a larger panel will ha
used.
Consult MCC or contact the solar panel manufacturer to perform
this calculation for you and make a recommendation.
The power cable between the battery and the MCC
shorter than 10 feet and rated at #14 AWG or lower
3.2.3.1 for more details.)
Prerelease
DCN
.
All Rights Reserved. Proprietary and Confidential. Do
All computers and printers contain high
-
speed circuits that generat
spurious signals throughout the 37
-50 MHz band.
Interference can result
if any of these signals couple into the antenna at the MCC
-
545C receive
To minimize this type of interference, try to keep the
antenna away from computers by at least 100
feet. The MCC
-
noise blanker does not suppress computer
-
generated interference.
External Signal Interference
This type of interference occurs whenever another transmitter produces
harmonics at the receiver center frequency of the MCC
-545C
.
lling and spatial separation can be used to reduce this type on
With XTermW installed (see Section 3.3), the STAT
command can be used to determine the site antenna noise levels.
Ideally, the background noise levels should be less than
DC Power Source
545C requires a 12 VDC power source
.
The average standby
current is about 80 mA
.
When the unit transmits it requires about 25
amps for 100 msec
.
For normal operation, including transmission time,
the average current requ
irement will be approximately 125 mA (80 mA
without GPS option) when operating at a normal duty cycle of 10%
automobile battery provides an excellent power source.
If there is no AC power available, a solar panel can be used to charge
size of the solar panel is determined by the solar
radiation available at the location of the site
.
In most locations in the
USA, a 30 watt solar panel will suffice
.
At higher elevations, where
winter temperatures are below freezing, a larger panel will ha
Consult MCC or contact the solar panel manufacturer to perform
this calculation for you and make a recommendation.
The power cable between the battery and the MCC
-
545C should be kept
shorter than 10 feet and rated at #14 AWG or lower
. (See S
ection
3.2.3.1 for more details.)
DCN
00001789-A
Do Not Distribute.
speed circuits that generat
e
Interference can result
545C receive
To minimize this type of interference, try to keep the
-
545C’s
generated interference.
This type of interference occurs whenever another transmitter produces
.
Antenna
lling and spatial separation can be used to reduce this type on
With XTermW installed (see Section 3.3), the STAT
command can be used to determine the site antenna noise levels.
Ideally, the background noise levels should be less than
–115 dBm.
The average standby
When the unit transmits it requires about 25
For normal operation, including transmission time,
irement will be approximately 125 mA (80 mA
without GPS option) when operating at a normal duty cycle of 10%
. An
If there is no AC power available, a solar panel can be used to charge
size of the solar panel is determined by the solar
In most locations in the
At higher elevations, where
winter temperatures are below freezing, a larger panel will ha
ve to be
Consult MCC or contact the solar panel manufacturer to perform
545C should be kept
ection