Kirisun DM588 - Page 28

DM588 Service Manual
Item Environment
Measurement Tool and Method
Index Requirement
Test Device
Test Point
Tool
Method
12. Adjacent
Channel Power
After debugging the TX
modulation sensitivity,
1) Set the tester to
Adjacent Ch Power Test
state, Ch Offset to W:
25kHz (wide band)/N:
12.5kHz (narrow band),
Ch BW to W: 16kHz
(wide band)/N: 8.5kHz
(narrow band), and audio
output to
12.5kHz@modulation
sensitivity*10;
2) Respectively set low,
medium and high TX
frequencies for a
channel, and then press
the PTT key.
General-purpose
tester
Connect
antenna
interface of the
radio to RF
IN/OUT interface
of the tester
*
Observe the adjacent channel
frequency on the tester.
1) W: <-70dBm
(wide band);
2) (Not tested)
(medium band);
3) N: <-60dBm
(narrow band)
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