Specifications

•
On or be fore the bat tery re place ment
(ex pi ra tion) date.
4.3.4 (Step 3b) Re place/Re in stall
Bat tery Pack
To re place/re in stall the bat tery pack, con
-
nect the 8-pin con nec tor to the header on
the cir cuit board in the bat tery pack. Con -
nect the 2-pin power har ness to the ELT.
This step will cause the ELT to ac ti vate.
Re set the ELT by tog gling the “ON/OFF”
switch on the ELT from “ON” to “OFF”.
Fit the bat tery pack into place dress ing
wires away from the stand offs to avoid
pinch ing wires be tween stand offs and bat -
tery pack. In stall two screws di ag o nally
from each other to se cure bat tery pack
dur ing the tests that fol low.
Note: If the check-out is go ing to con -
clude with Step 4 be low, then re seat the
bat tery pack on the ELT, dress ing the
har ness wires away from the stand offs to
avoid pinch ing the wires be tween the bat
-
tery pack and the stand offs. Re in stall the
four Phil lips head screws and tighten se
-
curely. Do not over torque the screws.
4.3.5 (Step 4) G-Switch Check
NOTE: The ELT can not be ac ti vated
this way un less pins 5 and 8 are
jumpered (this hap pens au to mat i cally
when the unit is locked into the
mount ing tray with the con nec tor in
place). Be cause of the po ten tial phys i -
cal dam age which could oc cur through
an im proper jumper, it is rec om mended
that this step be per formed only by an
ex pe ri enced tech ni cian/me chanic. See
“In stal la tion” sec tion of this man ual for
pin lay out di a gram. A test plug may be
ob tained from ARTEX (p/n 151-2012) to
use in per form ing this test.
While mon i tor ing 121.5 MHz on an AM
re ceiver, and with the unit switch in the
“OFF” (down) po si tion, ac ti vate the ELT
by us ing a rapid for ward (throw ing) mo -
tion, in the di rec tion of the ar row, fol -
lowed by a rapid re vers ing ac tion. Ver ify
ac ti va tion via the au ral swept tone on the
re ceiver. Fol low ing ac ti va tion, “RE SET”
the unit by tog gling the “ON/OFF” switch
to “ON” then back to “OFF”.
4.3.6 (Step 5a) Elec tri cal Check
Ac ti vate the ELT. As the unit will be on
for three min utes it is rec om mended that
it be placed in a con tainer ca pa ble o f
sub stan tially at ten u at ing RF sig nals. Re -
mem ber that all tests must be per formed
within the first five min utes af ter the hour
UTC (Uni ver sal Co or di nated Time). Mon i -
tor the fol low ing per for mance cri te ria for
three min utes (power out put must be
made at the end of the three min ute pe-
riod).
4.3.7 (Step 5b) 121.5/243 MHz
Power Out put
Con nect the equip ment as shown be low:
Note: use a fresh bat tery pack (12.5
volts nom i nal) or a 4 amp, 12.5 vdc
power sup ply as power source.
The test equip ment spec i fied in the fol -
low ing steps is only a rec om men da tion.
The use of other man u fac turer’s mod els
of test equip ment ca pa ble of pro vid ing
equiv a lent mea sure ment re sults is ac cept -
able.
Set the Spec trum An a lyzer as fol lows:
• Cen ter Freq: 121.5MHz
• Span: 1 MHz
• Res o lu tion Band width: 1 MHz
ARTEX AIRCRAFT SUPPLIES DOCUMENT # 570-5000
04/11/01 PAGE 4-5
SPECTRUM
ANALYZER
ELT
BNC (Top)
CONNECTOR