ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-1 (453-5002), C406-1HM (453-5003)
Page 31 of 67
Feb 28/2019
25-62-10
3)
Wait three minutes.
4)
Measure the frequency. The frequency must be within the tolerance specified in Table 3 on page 23.
NOTE: The exact 406 MHz frequency used is printed on the ELT product label.
SUBTASK 25-62-10-750-008
M.
406 MHz Power Output Measurement
–
Item 5e
CAUTION:
POWER OUTPUT IS APPROXIMATELY 37 DB (5 WATTS). BE SURE ADEQUATE
ATTENUATION IS INSERTED IN-LINE BETWEEN THE ELT ANTENNA OUTPUT AND THE
MEASURING DEVICE TO PROTECT THE INPUT CIRCUITS OF THE MEASURING DEVICE.
1)
Connect the measuring device, referring to SUBTASK 25-62-10-750-003 on page 29.
2)
Activate the ELT, if necessary,
by placing the control switch in the “ON” position.
3)
Wait three minutes.
4)
Read the displayed amplitude of the 406 MHz burst that follows the three-minute wait period. The
amplitude must be within the minimum specified for 406 MHz in Table 3 on page 23 at the output terminal.
5)
Deactivate the ELT by placing the contr
ol switch in the “OFF” position.
SUBTASK 25-62-10-750-009
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 CUR
RENT 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. REFER TO SUBTASK 25-62-10-750-003 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.
