HYT TC-580 Service Manual page 48

RX group items: go to tune RX items under RX Item menu.
Items Condition
Switch to and enter
BPF Tune. WFP1 at
low frequency is set
by default.
Short press UP/DN to
switch the frequency.
Switch to and enter
SQL Open5. WFP1 at
low frequency is set
by default.
Short press UP/DN to
switch the frequency.
Refer to method of
SQL Open5 for that of
SQL Open1 and SQL
Open9.
Tune WFP5 in SQL
Open5, and then
press DN to enter
NFP1 at low
frequency.
Refer to method of
SQL Open5 for that of
SQL Open1 and SQL
Open9.
Switch to and enter
SQL Close5. WFP1
at low frequency is
set by default.
Short press UP/DN to
switch the frequency.
Refer to method of
SQLClose 5 for that
of SQL Close 1 and
SQL Close 9.
Test
Test Instrument Test point
Communication
Test Set
Antenna
SSG: -119dBm
Earpiece
MOD: 1KHz
Socket
DEV: 3.0KHz
Filter: 0.3~3KHz
Communication
Test Set
SSG: -121dB
MOD: 1KHz
DEV: 3KHz
Filter: 0.3~3KHz
Antenna
Earpiece
Socket
Communication
Test Set
SSG: -120dB
MOD: 1KHz
DEV: 1.5KHz
Filter: 0.3~3KHz
Communication
Test Set
Antenna
SSG: -123dBm
Earpiece
MOD: 1KHz
Socket
DEV: 3KHz
Filter: 0.3~3KHz
47
TC-580 Service Manual
Adjustment
Part Method
Check the bandpass
waveform and press
SK1/SK2 to adjust
Press
the BPF Tune
SK1/
waveform. Press OK
SK2
to save and exit upon
completion of all
settings.
Tune the SSG
output signal to
Press
squelch level. Press
SK1/
OK to save and exit
SK2
upon completion of
all settings.
Tune the SSG output
signal to squelch
Press
level. Press OK to
SK1/
save and exit upon
SK2
completion of all
settings.
Specifications /
Remarks
Adjust the
volume to an
appropriate
value before
tuning, so that
the output
amplitude is not
limited.
SINAD: ≥12dB
Squelch level
(Level 5):
-121dB
Squelch Level:
Level 1: -124dB
Level 9: -117dB
Squelch Level
(5):
-120dB
Squelch Level:
Level 1: -123dB
Level 9: -116dB
Squelch level
(Level 5):
-123dB
Squelch Level:
Level 1:
-126dB
Level 9:
-119dB