Electrical Characteristics By Signal Type - Sandel ST3400H HeliTAWS Installation Manual

4.9 Electrical Characteristics by Signal Type

Inputs
Signal Type
A429
A429*
A429**
RS232
RS422
RS422*
A407 (AC Synchro)
Discrete Valid (High)
Discrete Valid (Low)
Discrete (High)
Discrete (Low)
Vert LL Dev
Lat LL Dev
Vert LL Flag
Lat LL Flag
Inverter
Power
Radalt
Ana
Outputs
Signal Type
A429
RS232
Speaker Output
Headphone Output
Open Drain
Notes:
At +28Vdc, nominal current is 1.25Adc +/- 10%, 1 minute after start up.
1.
Power On Load = 60.4K. For Vert/Lat Deviation there may need to be a 1K load somewhere else in the
2.
system to meet the receiver load requirements. Check installation instructions for the interfaced receiver.
Outputs are protected against shorts to ground. Shorts to power supply may cause damage to components.
3.
82046-IM-K
Nom Range
+/- 5Vdc
+/- 5Vdc
+/- 5Vdc
+/- 10Vdc
+/- 5Vdc
+/- 5Vdc
11.8Vac rms +/- 20%
Note 4
>14.0Vdc
Note 4
<3.5Vdc
>1.2Vdc
<8Vdc
+/- 225mv FS
+/- 225mv FS
Unflagged > 225mv
Unflagged > 225mv
26Vac rms 400Hz nom
320Hz-480 Hz limits
Note 1
+22 to +30.3Vdc
+/- 30Vdc
+/- 13Vdc
Nom Range
+/- 5Vdc
+/- 5Vdc
2W Nom
25mw/125mw
1Ω or High Impedance (over current
protected)
ST3400H INSTALLATION MANUAL
Z (Ω – Power
Absolute
Max Off)
5.5Vdc >100K
14Vdc >100K
33Vdc >100K
14Vdc >100K
5.5Vdc >100K
14Vdc >100K
14Vdc >100K
33Vdc >500K
33Vdc >500K
33Vdc 50K
33Vdc 50K
Note 2
14Vdc >300K
Note 2
5.5Vdc >300K
Note 2
14Vdc >300K
Note 2
5.5Vdc >300K
>50K
42Vac
7Adc NA
33Vdc >100K
14Vdc >100K
Load (Ω)
Note 3
Absolute
Max
70mAdc 2K (Minimum)
70mAdc 500 (Minimum)
5W 4-8
50mw/250mw >500
250mAdc >350K
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