Kongsberg EA 600 Instruction Manual page 70

EA 600 / Base version
60
The mains socket contains two 2 A fuses. Standard slow-acting
types should be used. The Power board converts the 115-230
VAC input to a +12 VDC which is available via connectors at
the front of the board. All other internal voltages inside the GPT
are generated from this +12 VDC. Consequently, the GPT can
also be powered from a 12 V car battery. A UPS (Uninterrupted
Power Supply) arrangement is realised by operating the
transceiver from the 115-230 VAC mains with a car battery
connected.
The transceiver can also be used as a 7 A battery charger. The
+12 VDC connector is protected by a 10 A fuse. Standard
slow-acting types can be used. Three red lamps at the front of
the POWER board indicate that +5 V to the processor
electronics and ±12 V to the receiver circuitry are generated.
The POWER board includes two independent supplies for
charging the high voltage transmit capacitors. The HV1 lamp
(green) lights while the TRX channel 3 and 4 capacitors are
charged, and the HV2 lamp (green) lights while the TRX
channel 1 and 2 capacitors are charged.
TRD
Single Frequency Single Beam 1 or 2 kW. This GPT
configuration includes only one transmitter/receiver board. The
transducer signal wires are connected to pin C and D at the
transducer connector. The cable screen is connected to chassis
TD plug.
Dual Frequency Single Beam 1 or 2 kW. This GPT
configuration includes two transmitter/receiver boards. The two
boards are independently operated at two different frequencies.
The high frequency transducer is connected to pin H and J
(channel 1), and the low frequency transducer is connected to
pin C and D (channel 3). The cable screen is connected to
chassis TD plug.
To chassis TD plug
C
D
A N
B
M
L
K
E J
H
F
(CD 6761)
857-164688 / E