BR200D-U1/BR300D-U1
Service Manual
41
Audio
Power
Test frequency:
Intermediate Frequency
Point
Antenna Interface Input:
RF OUT
:
-47dBm(1mV)
MOD
:
1kHz
DEV
:
±1.5kHz
Audio load: 16
Ω
(Volume
knob
clockwise to
the end) Audio
Power>0.3W
Power of
the
internal
speaker
:
>1.1W
Sensitivity
CH: Low Frequency
Point
CH: Intermediate
Frequency Point
CH: High Frequency
Point RF
OUT:-119dBm(0.25
μ
V)
MOD: 1kHz
DEV: ±1.5kHz
Computer
Adjustment
SINAD
:
12dB or higher
CH: Receiving Center
Frequency Point
Level-9
RF OUT output:-116dBm
Normal
squelch
opening after
adjustment
Squelch
Enable
Sensitivity
Level-1
RF OUT output:-122dBm
RF signal
generator
Oscillograph
Audio frequency
voltmeter
distortion tester
/Integrated tester
Speaker
Interface
Computer
Test Mode
Normal
squelch
opening after
adjustment
Table 5 Transmitting part
Item
Test condition
Instrumentation
Test point
Correcting
member
Requirement
Remarks
RF rate
Frequency Counter /
Integrated Tester
Computer
Test Mode
Within ±50Hz
DCS
waveform
(balance)
Oscillograph /
Integrated Tester
Nearly
flat waveform
Square wave
Power Power
7.4V
Power Tester /
Integrated Tester
Ammeter
Computer
Test Mode
Adjust to
4.25W
Within
±0.25W
Max
Modulation
Frequency
Offset
CH
:
Transmitting Center
Frequency Point
AG
:
1kHz/120mV
Adjust to
±2.1kHz
±200Hz
Modulation
Sensitivity
CH
:
Transmitting Center
Frequency Point
AG
:
1kHz/12mV
Frequency
deviator/Integration
Tester
Check
Frequency
Offset
1.1kHz~1.8kHz
CTCSS
DEV
CTCSS
:
67Hz
Frequency
deviator/Integration
Tester
Computer
Test Mode
Adjust to
±0.35kHz
±150Hz
DCS DEV
DCS
:
023N
Frequency
deviator/Integration
Tester
Antenna
Computer
Test Mode
Adjust to
±0.35kHz
±150Hz
Battery
Warning
Battery Terminal: 6.8V
Computer
Test Mode
Indicator light
twinkles after
adjustment
Summary of Contents for BR200D-U1
Page 1: ...BR200D U1 BR300D U1 Service Manual 1 BR200D U1 BR300D U1 Service Manual ...
Page 17: ...BR200D U1 BR300D U1 Service Manual 17 Exploded View of the Parts ...
Page 20: ...BR200D U1 BR300D U1 Service Manual 20 DR7000 2 ...
Page 36: ...BR200D U1 BR300D U1 Service Manual 36 Chapter 6 PCB Layout ...
Page 37: ...MIC1 C5 D4 D5 D8 C4 C3 R1 D2 D3 D6 C7 C8 C9 J1 D1 D9 C2 D7 C6 C13 C1 ...
Page 70: ...BR200D U1 BR300D U1 Service Manual 66 Chapter 10 Block and Schematic ...