User Manual

10
- Press th e left-h an d M key on th e top row of keys, “
131/1
” appears;
release, “
131/0
” appears.
- Press th e cen ter N key, “
132/1
” appears; release, “
132/0
” appears.
- Press th e righ t-h an d M key, “
133/1
” appears; release,
“
133/0
” appears.
Table 7 Receiver Performance Checks
Test Na m e Sy st em An a ly z er Ra d io Test Set Co m m en t s
Referen ce
Frequen cy
Mode: PWR MON 4th
ch an n el test frequen cy❖
Mon ito r: Frequen cy error.
In put at RF In /Out
TEST MODE,
4 CSQ output
at an ten n a
PTT to con tin uous
(durin g th e
perform an ce ch eck)
Frequen cy error to
be ≤ ±1.2kHz
Rated Audio Mode: GEN
Outpu t level: 1.0m V RF 4th
ch an n el test frequen cy❖
Mod: 1kHz ton e at 3kHz
deviation
Mon ito r: DVM: ac Volts
TEST MODE,
4 CSQ
PTT to OFF (cen ter);
m eter selector to Audio
PA
Set volum e con trol
to 3.74Vrm s
Distortion As above, except to
distortion
As above As above Distortion < 3.0%
Sen sitivity
(SINAD)
As above, except SINAD;
lower th e RF level for 12dB
SINAD
As above PTT to OFF (cen ter) RF in put to be <
0.35µV
Noise Squelch
Th resh old (on ly
radios with
con ven tion al
system n eed to
be tested)
RF level set to 1m V RF As above PTT to OFF (cen ter);
m eter selection to
Audio PA; spkr/load to
speaker
Set volum e con trol
to 3.74Vrm s
As above, except ch an ge
frequen cy to a
con ven tion al system . Raise
RF level from zero un til
radio unsquelch es.
Out of TEST
MODE; select
a co n ven tio n al
syst em
As above Un squelch to
occur at < 0.25µV.
Preferred SINAD =
8-10dB
❖ See Table 6