ACR G406-4 handleiding
Handleiding
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ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
G406-4 (453-5012)
570-5012 Rev. P Company Confidential 25-62-21 Page 30 of 70
SUBTASK 25-62-21-750-002
G. Performance Testing Setup
NOTE: The ELT software routine logs battery life in 30-second increments. A minimum of 30
seconds is added to the battery usage total each time the ELT is activated and de-
activated. If the ELT is left activated beyond the first 30 seconds, additional time is
added in 30-second increments.
NOTE: Careful planning of the performance tests is necessary to avoid activating the ELT
more than necessary. Plan the performance testing in a manner that allows tests to
be run concurrently and test equipment settings to be quickly switched from one test
to another. By doing so, the three-minute warm-up requirement can be eliminated
from a number of tests and battery run time minimized to a large extent.
1) Place the ELT in a container or screen room capable of substantially attenuating RF signals, or the
transmitter power output shall be connected to a suitable dummy load to minimize radiation.
2) Use the ELT’s own battery pack as the power source for these measurements. An alternate power
source can be used where lengthy servicing, other than the performance tests, is anticipated.
3) Ensure that adequate attenuation rated for 406 MHz is installed between the ELT antenna output and
the measurement equipment to prevent damaging input circuitry, if required. At a minimum, the
attenuator should be rated at 30 dB, and 5 watts for a ½-second duration as shown in Figure 7
Performance Testing Equipment Setup.
Figure 7 Performance Testing Equipment Setup
SUBTASK 25-62-21-750-003
H. 121.5 MHz Frequency Measurement – Item 5a
1) Connect the measuring device, referring to SUBTASK 25-62-21-750-002.
2) Activate the ELT by placing the control switch in the “ON” position.
3) Wait three minutes.
4) Perform Error! Reference source not found. during the three-minute waiting period.
5) Measure the frequency after the three-minute waiting period. The frequency must be within the
tolerance specified in Table 3 on page 23.
NOTE: If the 121.5 MHz carrier frequency is within specified tolerance, the 243.0 MHz
frequency will also be within tolerance.
SUBTASK 25-62-21-750-004
I. Audio Modulation Check – Item 5b
1) Perform this check in conjunction with SUBTASK 25-62-21-750-003.
2) Monitor 121.5 MHz on an AM receiver.
3) Listen for the aural sweep tone on the receiver. The audio should “sound” like an ELT.
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Productinformatie
| Merk | ACR |
| Model | G406-4 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8218 MB |
