ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-2 (453-5000), C406-2HM (453-5001)
570-5000 Rev. U
Company Confidential
25-62-11
Page 31 of 66
SUBTASK 25-62-11-750-009
N.
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 MEASU
REMENTS 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. REFER TO SUBTASK 25-62-11-750-003 ON
PAGE 29.
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.
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.
8)
Allow the ELT to stabilize for at least 30 seconds to avoid false readings.
9)
Read the current draw on the ammeter. Steady state current draw must not exceed 200 mA.
10)
Deactivate the ELT by placing the contro
l switch in the “OFF” position.
11)
Remove the test harness.
12)
Reinstall the battery pack in accordance with SUBTASK 25-62-11-450-001 on page 55.