Chapter 11-10 EQ44/54 Installation and service
11.5.1 Power supply connections
The internal voltage regulator will allow the EQ44/54 to operate normally
within the power supply voltage range from 10 to 32 V DC. The EQ44/54 is
connected to external power (battery) by means of the supplied power cable,
which is approximately 2 meters long and is not extendable. After connecting
the cable to the power source, push the plug as far as it will go into the four
pin receptacle marked “PWR” on the rear of the cabinet and turn the plug’s
coupling ring clockwise until it makes a click.
11. 5. 2 Fuse
Warning! A fuse should always be installed to protect the unit.
Using a fuse which is not specified for your equipment can cause it to blow
the instant the EQ44/54 is switched on or it will not protect the equipment as
intended – see fuse rating in section 11.10 Specifications.
11. 5. 3 Tra nsduce r connect io n
Most transducers are supplied with a 10 meter cable for connection to the
echosounder unit – EQ44/54. Push the female plug, as far as it goes, into the
receptacle marked “ECHO1” or/and “ECHO2” on the rear of the cabinet and
turn the plug’s coupling ring clockwise until it clicks into locked position
The EQ44/54 must be turned off while connecting/disconnecting the trans-
ducer cables.
Recommended connection and setup of Simrad supplied transducers:
Transducer type Port Echosounder setup
Simrad C50/200 ECHO2 Simrad Combi C50/200
Simrad C38/200 ECHO2 Simrad Combi C38/200
Airmar B250 ECHO2 Airmar Combi B250-22
Airmar B260 ECHO2 Airmar Combi B250-22
Airmar P319, P52, P66, B117, B45,
SS505, B744V, SS544V, B256
ECHO1 200kHz Airmar Des. A
50kHz Airmar Des. A
Airmar ST650 ECHO1
See Transducer connections next page, and Echosounder setup in sec-
tion 10.1.
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