ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ELT 345 (P/N: A3-06-2880)
Page 45 of 58
25-62-35
TASK 25-62-35-450-805
6.
Wiring
SUBTASK 25-62-35-990-001
A.
General Considerations and Recommendations
CAUTION:
IF GROUND OR OTHER CONNECTIONS ARE BROKEN OR OTHERWISE DAMAGED, THE ELT IS
STILL CAPABLE OF AUTOMATIC ACTIVATION; HOWEVER, THE COCKPIT REMOTE SWITCH
MAY BE INCAPABLE OF RESETTING THE ELT AND OPERATION MAY NOT BE INDICATED ON
THE REMOTE SWITCH LED.
CAUTION:
INCORRECT TERMINATION OF THE WIRING IN THE CONNECTORS MAY DAMAGE THE ELT,
CAUSE TRANSMISSION ISSUES, OR RESULT IN A NON-FUNCTIONING REMOTE SWITCH.
VERIFY THE WIRING AGAINST THE WIRING DIAGRAM AND PERFORM A CONTINUITY CHECK
TO CONFIRM GOOD CONNECTIONS AND PROPER PIN LOCATIONS.
CAUTION:
TO PREVENT INADVERTENT ELT ACTIVATION OR POSSIBLE COMPONENT DAMAGE, DO NOT
CONNECT THE HARNESS TO THE ELT OR COCKPIT REMOTE SWITCH UNTIL ALL POWER AND
GROUND WIRING CONNECTIONS ARE COMPLETED AND VERIFIED.
1)
The following wiring and grounding considerations and recommendations are applicable:
a)
Minimum 22 AWG wire size.
b)
Shielding is recommended to help prevent EMI and RF interference.
c)
Use high quality conductor meeting MIL-W-16878, M22759, M27500, or a commercial equivalent
acceptable for use in aircraft applications.
d)
Provide a “Drip Loop” in the remote switch harness connection to the ELT to divert moisture from the D-sub
receptacle.
e)
Provide a “Service Loop” in the remote switch harness connection to the remote switch assembly, such that
the assembly can be withdrawn from the panel far enough to easily disconnect the harness plug.
2)
Refer to the following schematics for suggested installation wiring.
Figure 17 Typical 2-Wire Installation for Unshielded Harness
