Northern Airborne Technology PIA01-001 User Manual
Page 7
PIA01-001 Passenger Intercom Amplifier
SM78 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 1
Page 1-4
ENG-FORM: 800-0116.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Music Level Discrete Input (MUSIC LEVEL)
Quantity: 1
Lo level:
Logic:
active LO, no external pull up required
Input
Active:
≤+3 Vdc
Maximum
Current:
≤10 mA
Input Protection:
diode protected to +45 Vdc maximum
Hi level:
Logic:
active Floating
Input Active:
No connection
Maximum Current:
N/A
Input Protection:
diode protected to +45 Vdc maximum
Intercom Volume Discrete Input (VOLUME INC/VOLUME DEC)
Quantity: 2
VOL INC: Logic:
active LO, no external pull up required
Input
Active:
≤+3 Vdc
Maximum
Current:
≤10 mA
Input Protection:
diode protected to +45 Vdc maximum
VOL DEC: Logic:
active LO, no external pull up required
Input
Active:
≤+3 Vdc
Maximum
Current:
≤10 mA
Input Protection:
diode protected to +45 Vdc maximum
VOX Level Discrete Input (VOX INC/VOX DEC)
Quantity: 2
VOX INC: Logic:
active LO, no external pull up required
Input
Active:
≤+3 Vdc
Maximum
Current:
≤10 mA
Input Protection:
diode protected to +45 Vdc maximum
VOX DEC: Logic:
active LO, no external pull up required
Input
Active:
≤+3 Vdc
Maximum
Current:
≤10 mA
Input Protection:
diode protected to +45 Vdc maximum
Output Signals
Headphones (PAX1 PHONES through PAX6 PHONES)
Three impedances are available. All headphone outputs are configured to the same impedance
setting via the Digital ICS Tieline (digital mode) or jumper setting (analog mode).
Quantity:
6 mono headphone outputs
Rated Output:
≥250 mW into rated load
Circuitry Type:
balanced
Headphone (Type One)
Load Impedance:
8
Ω ±10%
Output Impedance:
≤2.25
Ω
Headphone (Type Two)
Load Impedance:
150
Ω ±10%
Output Impedance:
≤20
Ω