Fresenius Vial INJECTOMAT 2000 Anasthesie, Техническое руководство

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Page : 24 NT 0928 Rev.A0
2.3. DISPLAY BOARD
2.3.1. Overview
The display board is mounted directly beneath the front plate of the syringe pump. It brings together all
the facilities for operator/device dialogue: Keyboard, buzzer and display.
It is connected to the CPU by rigid connectors, forming a sandwich, with the former, held in place by
struts.
The soft keyboard is connected to the display board.
2.3.2. Functional description
The display board comprises four modules:
q The electroluminescent display,
q The keyboard interface,
q
The liquid crystal display,
q The buzzer.
2.3.2.1. Electroluminescent display
The electroluminescent display is made of eighteen LED's and five 7 segment display units, with the
decimal point, except two of them which are marked (
*
) in the table below.
The diodes and display units are driven in a multiplexed, 8 segments x 8 digit matrix. The LED's and
display units are mounted with a common cathode.
The 8 segments are driven by signals SEG0 to SEG7 and the 8 digit by signals DIG0 to DIG7.
The 2 LED’s, "MAIN PRESENCE" and "FAIL" are controlled independently of the matrix.
2.3.2.1.1. LED’s table
The following table lists the various diodes used in different models.
Ref Name Type Seg Dig
LD1 Mains On yellow * *
LD2 Body Alarm red 1 0
LD3 Piston Alarm red 2 0
LD4 ml green 5 1
LD5 Battery green 7 1
LD6 Fail red * *
LD7 Alarm red 4 to7 0
LD8 Worm screw 3 green 2 1
LD9 Prealarm orange 1 to 4 2
LD10 Occlusion Alarm red 0 0
LD11 Worm screw 2 green 3 1
LD12 Infusion End Alarm orange 0 2
LD13 Worm screw 1 green 4 1
LD14 NU
LD15 Connection to PC green 0 1
LD16 disengagement alarm red 3 0
LD17 ml/h green 5 1
LD18 Battery Alarm red 5 2
LD19 Validation Demand green 1 1