3 environmental specifications – Northern Airborne Technology PTA12-3xx User Manual
Page 9

PTA12-300 POTS Telephone Adapter with NVIS Display
SM55-3 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 4
Page 1-6
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Annunciator LEDs
NVIS green B filtered and covered by a polycarbonate lens
Meets daylight readability per MIL-STD-411 Sec 5.1.3.3
Annunciators with filters are NVIS Green B compliant per
MIL-STD-3009
Backlighting
NVIS Green B compliant per MIL-STD-3009.
Material/Finish
Chassis & cover are 5052-H32 brushed aluminum with chromate
conversion finish
Front panel aluminum bezel is 6061-T6 with black paint and
matte clear coat over chromate conversion finish
Connectors
One male filtered 25 pin D-submin with Positronics V5 locking
tabs
1.4.3
Environmental Specifications
Temperature
-20 to +55
°C (operating)
-55 to +85
°C (survival)
Altitude
50,000 feet max.
Humidity >
95%
Vibration
DO-160D Cat. [(SBM)(UF)]
Qualification of the PTA12-100 POTS Telephone Adapter with Display was completed in accordance with
DO-160D Env. Cat. A1/D1-BAB[(SBM)(UF)]XXXXXXZBABB[UUX]MXXXX.
Note: Tested to DO-160D pre-change 1 and 2.
Section 1 ends