AA36-ECF Tie Line Adapter
SM42 Installation and Operation Manual
April 15, 2012 Rev: 5.00
Page 2-2
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
2.3.3
Cabling and Wiring
All unshielded wire should be MIL-W-22759 or equivalent. For shielded wire applications, use Tefzel MIL-
C-27500 shielded wire with solder sleeves (for shield terminations) to make the most compact and easily
terminated interconnect. Follow the wiring diagrams in Section 2.6 as required.
Allow 3 inches from the end of the wire to the shield termination to allow the hood to be easily installed.
Note that the hood is a ‘clamshell’ hood, and is installed after the wiring is complete.
All wiring should be at least 22 AWG, except power and ground lines, which should be at least 20 AWG.
Ensure that all ground connections are clean and well secured.
To prevent system failure or inadequate equipment protection, supply power from a separate 1.0 A
breaker or fuse, not connected to any other source.
2.3.4
Setting NAT ICS TIE Output
The mic signal from the Audio Controller to the AA36-ECF ICS IN is expected to be approximately 500
mVrms.
The INPUT ADJ trimpot is factory set to provide 340 mV RMS
r
10% on the NAT ICS TIE line, but can be
adjusted to give the desired output.
2.3.5
Setting ICS OUT
The signal level measured on the ICS tie line from the AEM audio controller/intercom system is typically
340 mVrms, which is fed into the NAT ICS TIE on the AA36-ECF.
The OUTPUT ADJ trimpot on the AA36-ECF is factory set to provide 500 mVrms
r
10% signal at ICS
OUT, measured across a 5 kOhm load, but can be adjusted to give the desired output.
2.3.6 ICS
Tie
Loading
The TIE LOAD switch and LOAD ADJ trimpot are used to match the AA36-ECF with up to four NAT ICS
tie lines.
The TIE LOAD switch is set as follows:
Number of NAT ICS Tie Lines
TIE LOAD Switch Position
1 Tie Line
1
2 Tie Lines
2
3 Tie Lines
3
4 Tie Lines
0
The LOAD ADJ trimpot is used for fine adjustment to match the AA36-ECF to the NAT ICS Tie Lines.
With the TIE LOAD switch set to the desired setting (see table above), adjust the setting of the LOAD
ADJ trimpot so that injecting a 500 mV signal at the ICS IN input gives a minimum signal across a 5
kOhm load at the ICS OUT output.
