Meinberg FM614 - Manual (Page 6)

6
Front panel layout
-1
00
-9 0
-80
-70 -60 -50
-40
-30
level[dBm]
accu ok
lo ad
field strength meter
FM614
Acc. check
Mod.
Charge
AC-line
Accu on
off
Piezo
Handling of FM614
a) Mode of operation
Use switch "Accu / AC-line" to choose one of the modes accu or AC-supply.
b) Charging
The accumulators are charged whenever the FM614 is plugged to the AC-
power-supply. LED "Charge" indicates this status.
c) Checking the capacity
By pressing key "Acc. check" the status of capacity is indicated by the analog
display. With the help of the marking it is possible to recognize if the accus have
to be charged. The antenna shouldn't be connected to carry out this test.
d) Measurement of field strength
The antenna AI01 has to be connected to the input of FM614 by using the
coaxial cable to perform this test. By varying the position of the antenna or the
alignment to the transmitter, the maximum of field strength can be found.
Besides a high field strength the flashing of the LED "Mod." exactly in rythm of
the timing marks is important. This marks can be observed acoustic by a piezo
buzzer.