M. current draw test – item 5f, Figure 10. current draw test setup – ACR&Artex C406-N User Manual
Page 46
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-N (453-5060), C406-N HM (453-5061)
25-62-13
Page 46 of 109
MAR 1/13
SUBTASK 25-62-13-750-008
M. Current Draw Test – Item 5f
CAUTION:
EXERCISE EXTREME CAUTION TO AVOID CAUSING A SHORT CIRCUIT CONDITION,
WHICH WILL BLOW THE FUSES IN THE BATTERY PACK. THIS TEST SHOULD ONLY BE
PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.
CAUTION:
ALL “ON” STATE CURRENT MEASUREMENTS MUST BE MADE WITH THE RF OUTPUT
(I.E., ELT ANTENNA CONNECTOR) LOADED WITH 50 OHMS RATED FOR 5 WATTS.
EITHER A RESISTIVE LOAD OR EQUIPMENT WITH 50 OHM IMPEDANCE PADDED WITH
10 DB/5 WATT ATTENUATOR. SEE SUBTASK 25-62-13-750-002 ON PAGE 43.
(1)
Verify the ELT control switch is in the “OFF” position.
(2)
Separate the battery pack from the ELT.
(3)
Disconnect the 2-wire ELT power connector.
(4)
Install test harness 611-0024, or equivalent, in the power circuit. See "Figure 10. Current
Figure 10. Current Draw Test Setup
(5)
Read the current draw on the ammeter. Measured current should be 0 µA (micro-amps), and
must not be more than 6 µA.
(6)
Verify the ammeter is set to accommodate a range of at least 3.5 amps.
(7)
Activate the ELT by placing the control switch in the “ON” position.
+
A
—
CIRCUIT BOARD IN
BATTERY PACK
TO ELT
611-0024
TEST HARNESS