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Avionics Division

Data recording and reading deck-system


           "DEDAL"


ATM - DA1 technical parameters

ATM-DA1 - Data collecting and transformations unit - W3A "SOKOL" helicopter version.

Basic parameters:

  •  Electrical power supply 27.5 V DC
  • Power consumption max. 30 W
  •  Work temperature range  -40° C ÷ +70° C
  • Survival temperature range -55° C ÷ +85°
  • Weight max. 9 kg
  • Dimensions 3/4 ATR Short (320.5 x 190.5 x 193.5) mm
  • Rear connection (RADIAL)
  •   DSX N2RX106SX67PX23171 - 2 pieces
  • DSX N1RX67P00171 - 1 piece.

 Input

Type of input signal (transmitter)
Number of inputs
Input signal variability range
Precision or output condition

ATM-OU/A96

1

data from ATM-EP2

-

RS232C

2

data from GPS

-

Two-condition

48

0 ÷ 3.0 VDC
7.0V ÷ 32 VDC
OPEN

LOW
HIGH
LOW

Two-condition

16

0 ÷ 3.0 VDC
7.0V ÷ 32 VDC
OPEN

LOW
HIGH
HIGH

Rotations

4

MEDIUM range
20Hz ÷ 1500Hz
(200mV ÷ 10V pp)
HIGH range
200Hz ÷ 15000Hz
(100mV ÷ 5V pp)

± 0,3%FS

Overspeed

2

7459 ÷ 12562Hz
95 ÷ 160% nTn

± 2%

Temperature sensor resistance

1

420 ÷ 696W

± 2W

DC input

1
2
3
3
3

0 ÷ 40VDC
0 ÷ 20VDC
0 ÷ 10VDC
0 ÷ 5VDC
-10V ÷ +10VDC

±0.2%FS = ±80mV
±0.2%FS = ±40mV
±0.2%FS = ±20mV
±0.2%FS = ±10mV
±0.2%FS = ±40mV

Potentiometer

12

Full potentiometers rotation 
500W ÷ 2kW

± 0.2% resistance relation between
HOT-PGND
a REF-PGND

K type thermocouple

2

100 ÷ 1100° C

± 1%FS at 25± 5° C
± 2%FS at -40 ÷ 70° C

Selsyn or Resolver

6

0 ÷ 360° or ± 180°
UREF = 26V
lub 36V/400Hz

± 0,17% = ± 0,6° = ± 7LSB

RS232C

1

-

-

 Output

Type of output
Number of output
Description

ARINC 717

1

Signal compatible with ARINC 717 standard HARVARD BI-PHASE code, Speed 64 or 128 word/sec. 
- to FDR recorder

ARINC 717

1

Signal compatible with ARINC 717 standard HARVARD BI-PHASE code, Speed 64, 128 or 256 word/sec. - to QAR recorder

RS232C

1

In accordance with CCITT V.24 recommendations speed 38,4 kbd

DC voltage

1

+15VDC ± 0,75V/125mA
-15VDC ± 0,75V/125mA

DC voltage

1

28VDC ± 4V/100mA

DC voltage

1

5V ± 0,25V/100mA

DC voltage

1

5V ± 0,25V/100mA

ATM-OU/A96

1

Data to FDEP ATM-EP2

Environmental category in accordance with RTCA DO-160C

Section title Section number Category
Temperature and altitude

4.0

B4

Temperature Variation

5.0

B

Humidity

6.0

A

Vibration

8.0

Y, P, N, L, S, M

Explosion Proofness

9.0

X

Waterproofness

10.0

X

Fluids Susceptibility

11.0

X

Sand and Dust

12.0

X

Fungus Resistance

13.0

X

Salt Spray

14.0

X

Magnetic Effect

15.0

A

Power Input

16.0

B

Voltage Spike

17.0

A

Audio Frequency Conducted Susceptibility - Power Inputs

18.0

B

Induced Signal Susceptibility

19.0

A

Radio Frequency Susceptibility (radiated and conducted)

20.0

X

Emission of Radio Frequency Energy

21.0

X

Lightning Induced Transient Susceptibility

22.0

XXXX

Lightning Direct Effect

23.0

X

Icing

24.0

X



Environmental category: according to 
DO160C B4-BA(YPNLSM)XXXXXXABABAXXXXXXX

The one from the most powerful and flexible PC computer based flight data processing avionics software package on the market.