The world's smallest and lightest altitude encoder.
There are two versions of this model:
Standard Version SSD120-30N
Version SSD120-30N-MOD1 for NARCO AT-5A, 6A, 50, 50A Transponders. The Narco AT-5A, AT-6A, AT-50* or AT-50A transponder will not accept data from the SSD120-(XX)N() Altitude Digitizer. A recent modification to remove the output decoupling capacitors is required and this version includes that modification.
Features
The best warranty in the business: 42-month manufacturer direct replacement. If your Trans-Cal encoder experiences a warranty-covered failure, it'll be replaced with a brand new unit with a new 42-month warranty.
Average MTBF: 9.7+ years. That?s right, Trans-Cal encoders are among the most reliable on the market, commonly providing reliable service for over 10 years.
Pin for pin replacement for most other manufacturers' encoders.
Comes with Mating Connectors, Cable Clamps, and Mounting Bracket.
Optional: Available with two independent RS232 serial data ports selectable message protocols for most popular avionics interfaces. Programmable for 100? and 10? resolutions. See Part# 11-06983
Optional: Available with adapter plates that will allow the installer to mount the unit in another manufacturer's mounting tray.
Specifications
Size: 2.5"W x 3.42"H x 1.38"L.
Operating temperature: -20ºc to +70ºc
Operating altitude: -1000' to +30,000'(Available in altitudes from 30,000? up to 100,000?)
Accuracy: +50' from -1000' to +30,000?
Weight: 5.9 oz.
Will operate on either 14 or 28 VCD at 0.270 Amps.
No Warm-up time: +20ºc to +70ºc -20ºc to +20ºc 30 seconds
*The Narco AT-50 and earlier transponder models require a modification before thay will function correctly with any altitude encoder. This modification is outlined in Narco Service Bulletin AT-50A-5.
Replaced an AK350 that was inop. With the adapter plate it was a perfect fit and a true plug and play as the cable going to the AK350 just plugged in pin for pin with no problems.
Micah B
17.02.2019
Drop in replacement for my AK-350s. No wiring or mounting changes required (with the additional mounting plates). After turning the avionics on there was no warm up time and the altitude grey code was spot on for pressure altitude right out of the box.
David
18.06.2018
Altitude reporting was spot on right out of the box. A direct wiring replacement from the old Ameri-King AK-350. Very pleased.
Robert
18.05.2018
Replaced an inoperative America-King AK-350 with the Trans-Cal SSD 120-30N. It was a perfect fit with the addition of the optional adapter plate. The 15 pin plug was wired for direct replacement with the AK-350.
Pam
13.01.2017
Excellent certified replacement for Narco AR-850. Mounts in Narco tray without modifications. Provided plastic plug for optional static port had to be replaced with a metal plug to seal properly. Calibration was very easy.