ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ELT 1000 (P/N: A3-06-2749-1)
Y1-03-0259 Rev. U
Company Confidential
Page 27 of 62
I.
121.5 MHz Power Output Measurement – Item 5c
1)
Connect the measuring device, as specified in Figure 6 Performance Test Setup on page 26.
2)
Activate the ELT, if necessary, by placing the control switch in the ON position.
3)
Wait three minutes.
4)
Read the displayed amplitude for 121.5 MHz. The amplitude must be within the minimum specified for 121.5
MHz in Table 3 on page 21, at the terminal output.
J.
406 MHz Frequency Measurement – Item 5d
CAUTION:
POWER OUTPUT IS APPROXIMATELY 5 WATTS. ENSURE THAT ADEQUATE
ATTENUATION IS INSERTED BETWEEN THE ELT AND THE MEASURING
INSTRUMENT.
1)
Connect the measuring device, as specified in Figure 6 Performance Test Setup on page 26.
2)
Activate the ELT using the local ELT switch.
3)
Wait three minutes.
4)
Measure the frequency after the stabilization period. The frequency must be within the tolerance specified in
NOTE:
The exact 406 MHz frequency is printed on the ELT product label.
K.
406 MHz Power Output Measurement – Item 5e
CAUTION:
POWER OUTPUT IS APPROXIMATELY 5 WATTS. BE SURE ADEQUATE
ATTENUATION IS INSERTED BETWEEN THE ELT AND THE MEASURING
INSTRUMENT.
1)
Connect the measuring device, as specified in Figure 6 Performance Test Setup on page 26.
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 21, at the output terminal.
5)
Deactivate the ELT by placing the control switch in the “ARM” position.
L.
Current Draw Test – Item 5f
CAUTION:
EXERCISE EXTREME CAUTION TO AVOID A SHORT CIRCUIT CONDITION OF THE
BATTERY PACK CONNECTIONS. THIS WILL BLOW A FUSE IN THE BATTERY PACK,
FORCING REPLACEMENT.
CAUTION:
ALL ON STATE CURRENT MEASUREMENTS MUST BE MADE WITH THE ANTENNA OUTPUT
TERMINATED IN 50 OHMS.
CAUTION:
THE 406 MHZ SIGNAL PULSES EVERY 50 SECONDS (APPROXIMATE) AND MAY DRAW UP TO
4 AMPERES FOR ½ SECOND. MANY METERS WILL NOT RESPOND THIS FAST OR READ THIS
TYPE OF WAVEFORM ACCURATELY. BECAUSE OF THIS, ACR ELECTRONICS, INC. DOES NOT
RECOMMEND MEASURING THE 406 MHZ BURST CURRENT.
1)
Verify the ELT control switch is in the “ARM” position.
