Skipper GDS102 - Analogue Interfaces; Transmitter Trigger Pulse and Bottom Pulse Outputs; External Printer Connection; Emc

Page 46 of 77
SKIPPER Electronics AS
Edition: 2017-06-12
GDS102 Operation and Installation Manual
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Chapter: 3. Installation
Analogue interfaces
GDS102 is equipped with 2 analogue outputs to supply analogue repeaters or other equipment with
analogue inputs. The signals are galvanically connected to the GDS102. Standard range is 0 - 10 V or
4 - 20 mA corresponding to shallow (ANA UPPER) and deep (ANA LOWER) settings. For more details,
see “Fig. 2.8. Screen 7. Interface setup screen.” on page 20, “Fig. 3.8. Terminal board connections” on
page 48, “Fig. 3.9. Input/Output Circuitry 1” on page 49, “Fig. 3.10. Input/Output Circuitry 2” on
page 50.
Note: The depth information from the sounder’s primary channel is always used for updating analogue
outputs.
The outputs can be calibrated according to the requirements of the external equipment, ref. description of
screen 7. See “Fig. 2.8. Screen 7. Interface setup screen.” on page 20.
J100 Symbol J100 # Description
ANAOUT3 25 Current output (4 - 20 mA).
ANAOUT2 24 Voltage output (0 - 10 V).
ANAOUT1 23 Not used.
ANAREF 22 System ground, common negative reference for analogue outputs.
Transmitter trigger pulse and bottom pulse outputs
Two optocoupler outputs provide a transmitter trigger pulse and bottom pulse output. These outputs can
be used to connect a repeater e.g. SKIPPER IR201, or to synchronize other hydroacoustic equipment to
avoid interference. See “Fig. 3.8. Terminal board connections” on page 48, “Fig. 3.9. Input/Output
Circuitry 1” on page 49 and “Fig. 3.10. Input/Output Circuitry 2” on page 50 for output details.
J100 Symbol J100 # Description
(OPT)VE 15 Transmitter trigger pulse emitter.
OPTVC 14 Transmitter trigger pulse collector.
OPTDE 13 Bottom pulse emitter.
OPTDC 12 Bottom pulse collector.
Note: The value of the depth, measured at the primary channel is always used to control bottom pulse
function. In the case where bottom is not detected, no bottom pulse is provided at all.
External printer connection
The external HP Deskjet or Epson D88/LQ-300+ printer with Centronics interface can be connected
to the GDS102 parallel port, located on the external panel of the cabinet. See “Fig. 3.5. Data
Communication Interfaces.” on page 42 for port allocation and “Fig. 3.6. Data Communication
Interfaces.” on page 43 for connector details.
EMC
Important: To meet the stringent EMC requirements for this type of equipment, two ferrite lters are
supplied with the display unit. The transducer wires should be looped two times through these as shown in
“9. EMC mounting kit” on page 76.