Hytera Communications MD78XIU1 Digital Mobile Radio User Manual

Hytera Communications Corporation Limited Digital Mobile Radio Users Manual

Users Manual

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Document ID3920154
Application IDKx9I0FonX31bgXGGPiNhRw==
Document DescriptionUsers Manual
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Date Submitted2018-07-11 00:00:00
Date Available2018-07-11 00:00:00
Creation Date2018-07-06 17:00:38
Producing SoftwareAdobe PDF Library 11.0
Document Lastmod2018-07-10 16:32:44
Document TitleHytera MD780(G) 中文维修手册
Document CreatorAcrobat PDFMaker 11 for Word
Document Author: luofeifei

UHF1 (400–470 MHz)
Contents
UHF1 (400–470 MHz)
UHF1 (400–470 MHz)
Contents
Contents
1. Product Controls .................................................................................................................................. 1
2. Disassembly and Reassembly ............................................................................................................ 3
3. Exploded View and Packing Guide .................................................................................................... 5
4. Specifications and Blind Spot ............................................................................................................ 8
5. Interface Definition ............................................................................................................................. 12
6. Tuning Description............................................................................................................................. 24
ii
UHF1 (400–470 MHz)
1. Product Controls
Front Panel
No.
Part Name
No.
Part Name
Volume Control/Group Call Selector
Up Key
Knob
LED Indicator
Down Key
LCD Display
10
Speaker
OK/Menu Key
11
Redial/Answer/Call Key
Back/Group Call Management Key
12
Programmable Keys
Dial-back/End/Home Screen Key
13
Microphone Connector
Power On/Off Key
14
Microphone Installation Index
Note
The above-mentioned product control is based on the mobile radio in the trunking mode. In the
conventional mode, No. 1 serves as Volume Control / Channel Selector Knob, and No. 6 & No.11
serve as the Programmable Keys.
80
UHF1 (400–470 MHz)
Rear Panel
No.
Part Name
No.
Part Name
RF Antenna Connector
Accessory Connector
Power Inlet
GPS Antenna Connector
Note
The GPS antenna interface is only available for MD78XG.
UHF1 (400–470 MHz)
2. Disassembly and Reassembly
2.1 Disassembling the Radio
Step 1
Turn off the radio and remove the power cord, and loosen the two screws to remove the radio.
Step 2
Remove the antenna.
Step 3
Loosen the three screws to remove the front panel. Then remove the FFC.
Step 4
Detach the volume control knob and loosen the four screws. Then remove the PCB from the
control panel.
Step 5
Undo the clips on both sides of the radio, and then remove the rear cover.
80
UHF1 (400–470 MHz)
Step 6
Loosen the eleven screws to remove the upper shield cover.
Step 7
Loosen the screw fixing the antenna connector and two screws fixing the PA module. Then take
the PCB out.
2.2 Reassembling the Radio
To reassemble the radio, perform the above steps in a reverse way.
UHF1 (400–470 MHz)
3. Exploded View and Packing Guide
3.1 Exploded View
Part list:
No.
Qty.
No.
27
28
29
6300109000000 Aluminum chassis
7500358000000 Heat sink pad
6100492101000 Waterproof ring for front
case
4210090000200 Signal cable
5208010100010 Connector (male)
6001079000000 Light-guide plate for keys
7300048000000 Metal dome
6100408001000 Waterproof ring for
microphone jack
6100488000000 P+R front panel keys
6201893000000 Speaker fixing sheet
7102606021000 Self-tapping screw
10
11
Part No.
Description
Description
Qty.
6100334000000
4399030000020
41078001000J0
O-ring for encoder switch
Rotary switch
PCB for control panel
30
6100533101000
31
6300126000000
32
33
34
7103015000000
6001080000000
6100496000000
35
36
37
7103008000400
7500272000000
Waterproof ring for
aluminum chassis
Upper cover of the
aluminum chassis
Machine screw
Plastic upper cover
Conductive silicone
rubber for main board
Machine screw
Heat sink pad
Semi-finished PA with
heat sink pad
80
Part No.
11
UHF1 (400–470 MHz)
No.
Qty.
No.
38
3414999000020
PNP transistor
39
40
41
42
6100532100000
5208026100000
6100530100000
43
44
45
46
5205002100110
3103994770150
7212002500000
6100531100000
21
22
23
6100404000000 Emergency key
7500344000000 PORON pad
5130000000040 TFT LCD 2.0" TFT
47
48
49
4401000009000
6100494000000
7500159000100
24
25
26
6001078000000 LCD bracket
5202002100270 Board-to-wire connector
7207003700000 Nut
50
7500357000000
6100574100000
7500344000000
Main PCB
D_SUB waterproof ring
Jack
Waterproof ring for power
socket
Power socket (male)
Electrolytic capacitor
Nut
Waterproof ring for
antenna connector
BNC RF connector
GPS soft stopple
Thermal conductive
silicone rubber
Heat sink pad
O_ring
PORON pad
17
18
19
20
4210080000700 Speaker cable (with 2-Pin
plug)
5001210000390 Speaker
7400297000000 Speaker felt
7102505000110 Machine screw
6001076000010 Front case for control
panel
860P580600100 Logo
6201739000000 Inner lining for knob
6000876000000 Encoder knob
6100493000000 Power on/off key
12
13
14
15
16
Part No.
Description
Part No.
Description
Note
Parts that are not marked with Part No. may vary with the radio frequency band.
Qty.
11
UHF1 (400–470 MHz)
3.2 Packing Guide
80
UHF1 (400–470 MHz)
4. Specifications and Blind Spot
4.1 Specifications
General
Frequency Range
400–470 MHz
Channel Capacity
1024
Group Capacity
64 (each with a maximum of 16 channels)
Channel Spacing
12.5 kHz / 25 kHz
Operating Voltage
13.6V±15% DC
 Standby: <0.6 A
Current Drain
 Receive: <2.0 A
 Transmit: 5 W: <5 A; 25 W: <8 A, 45 W: <12 A
Frequency Stability
±2.5 ppm
Antenna Impedance
50 Ω
Dimensions (H×W×D)
60 mm × 174 mm × 200 mm (2.4 inch × 6.9 inch × 7.9 inch)
Weight
1.7 kg (3.75 lbs)
LCD Display
220*176 pixels, 262000 colors, 2.0-inch, 4 rows
Transmitter
 Low: 1–25 W
Power Output
 High: 1–45 W
Conducted/Radiated
 -36 dBm <1 GHz
Emission
 -30 dBm >1 GHz
 10K1F3E@12.5 kHz
FM Modulation
4FSK Digital Modulation
 15K1F3E@25 kHz
 12.5 kHz (data only): 7K70FXD
 ±2.5 kHz@12.5 kHz
Modulation Limit
 ±5.0 kHz@25 kHz
UHF1 (400–470 MHz)
 40 dB@12.5 kHz
FM Hum and Noise
 45 dB@25 kHz
 60 dB@12.5 kHz
Adjacent Channel Power
 70 dB@25 kHz
Audio Response
+1 dB to -3 dB
Audio Distortion
≤3%
Digital Vocoder Type
AMBE++ or SELP
Digital Protocol
ETSI-TS102 361-1, -2, -3
Receiver
Analog:
 0.3 μV (12 dB SINAD)
 0.22 μV (Typical) (12 dB SINAD)
Sensitivity
 0.4 μV (20 dB SINAD)
Digital:
 0.3 μV /BER5%
Adjacent
Channel
 TIA-603: 65 dB@12.5 kHz/75 dB@25 kHz
 ETSI: 60 dB@12.5 kHz/75 dB@25 kHz
Selectivity
 TIA-603: 75 dB@12.5/25 kHz
Intermodulation
Spurious
 ETSI: 70 dB@12.5/25 kHz
Response
Rejection
 TIA-603: 75 dB@12.5/25 kHz
 ETSI: 70 dB@12.5/25 kHz
 TIA-603: 90 dB
Blocking
 ETSI: 84 dB
 40 dB@12.5 kHz
Hum and Noise
 45 dB@25 kHz
 Internal (20 Ω load): 3 W
Rated Audio Power
Max. Audio Power
 External (8 Ω load): 7.5 W
 Internal (20 Ω load): 8 W
80
UHF1 (400–470 MHz)
 External (8 Ω load): 20 W
Rated Audio Distortion
≤ 3%
Audio Response
+1 dB to -3 dB
Conducted Spurious
< -57 dBm
Emission
Environment
Operating Temperature
-30℃ to +60℃
Storage Temperature
-40℃ to +85℃
IEC 61000-4-2 (level4)
ESD
±8 kV (contact)
±15 kV (air)
American Military Standard
MIL-STD-810 C/D/E/F/G
Dust & Water Protection
IP54
Humidity
Per MIL-STD-810 C/D/E/F/G Standards
Shock and Vibration
Per MIL-STD-810 C/D/E/F/G Standards
GPS (for MD780XG only)
Accuracy specs are for long-term tracking (95th percentile values>5 satellites visible at a nominal
-130dBm signal strength).
TTFF (Time To First Fix)
< 60s
Cold Start
TTFF (Time To First Fix)
<10s
Hot Start
Horizontal Accuracy
<10 m
Note
All Specifications are tested according to applicable standards, and subject to change without notice
due to continuous development.
10
UHF1 (400–470 MHz)
4.2 Blind Spot
No.
Blind Spot (MHz)
No.
Blind Spot (MHz)
403.2
414
422.4
432
441.6
450
460.8
468
80
UHF1 (400–470 MHz)
5. Interface Definition
5.1 10-Pin Connector
The 10-pin connector on the front panel is used for audio accessories or data cable connection. The
definition of each pin is described as below.
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Pin 1 and Pin 10 (accessory
identifier interface 2) compose
Accessory
identification
an
Digital input
3.3 V CMOS
accessory
matrix.
Please
identification
refer
to
the
“10-pin Accessory Identification
interface 1
Matrix Table” below for detailed
function definitions.
PTT
PTT input
Digital input
input
for
the
palm
microphone, which is valid at
3.3 V CMOS
low level.
Load impedance >1 kΩ
Accessory audio output. When
Vrms=600mV±10%@1
External audio
Analog
“Mic Audio Output” is selected
kHz
output
via CPS, this pin will output the
output
60%
system
max.
received audio signal.
deviation
When this pin is used for USB
USB
data
USB_D-
USB data
function, USB function of DB26
cablewill be disabled.
Ground
GND
cable
This pin provides power supply
to the USB accessory. It outputs
USB
power
Power supply: 5 V; current
a 5 V voltage when accessory
limiting: 500 mA
identification code is 00|01|10,
USB_VBUS
supply
and outputs low level when the
code is 11.
12
UHF1 (400–470 MHz)
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Modulation sensitivity
Mic input
Analog input
Vrms=80mV±10%@1kHz
Mic input for palm microphone
60%system max. deviation
When this pin is used for USB
USB
data
USB_D+
function, USB function of DB26
USB data
cable+
will be disabled.
High level by default; valid at low
level.
HOOK and MONITOR functions:
Press
this
key,
the
level
changes from high to low. When
HOOK
Digital input
3.3V CMOS
palm microphone is detected or
press the key of the palm
microphone, this pin is used for
HOOK function; when desktop
microphone is detected, this pin
is used for MONITOR function.
Pin 1 and Pin 10 (accessory
identifier interface 1) compose
Accessory
10
an
identification
Digital input
accessory
matrix.
3.3V CMOS
interface 2
Please
identification
refer
to
the
“10-pin Accessory Identification
Matrix Table” below for detailed
function definitions.
10-pin Accessory Identification Matrix Table (composed of Pin 1 and Pin 10):
Pin 1
Pin 10
Low level
Low level
Low level
High level
Radio Status
Reserved
The mobile radio is in USB master mode or connected to a USB
smart accessory (such as palm microphone with keypad).
The mobile radio is connected to an external speaker (including
High level
Low level
desktop microphone with earpiece).
80
UHF1 (400–470 MHz)
Pin 1
Pin 10
Radio Status
High level
High level
The mobile radio is in USB slave mode, or it is not connected to any
accessory, or it is connected to a palm microphone without keypad.
5.2 DB26 Accessory Interface
DB26 accessory interface, namely the 26-pin further development interface on the rear panel, is mainly
used for accessory connection of mobile radio, or compatibility with other interfaces. Users can further
develop the radio via this interface. The figure and definition of each pin is as follows.
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Pin 1 and Pin 10 (accessory
identification
compose
Vbus
USB
interface
an
2)
accessory
Power
Power supply: +5V; current
identification matrix. This
output
limiting: 500 mA
outputs a 5 V voltage when
pin
power supply
accessory identification code is
00|01|10, and outputs low level
when the code is 11.
Power
Ground
supply
GPIO
5V TTL
GPIO. Programmable via CPS.
Power
Power supply :13.2V±15%;
Power output: 13.2 V; output
output
output current ≤1 A
current: ≤1 A
(grounding)
GP5_3
(Chan_Act)
SWB+
14
UHF1 (400–470 MHz)
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Programmable
output
pin
Analog
(“External Horn & Lights” feature
External Alarm
voltage
13 V alarm output
by default, programmable via
output
CPS).
Power
Power Ground
supply
(grounding)
This pin is used for signal input of
Vrms=80 mV±10%@1 kHz
Analog
external MIC. The audio path is
TX Audio
60%
system
max.
signal input
valid when the external Mic PTT
deviation
is held down.
Load impedance>1kΩ
Default output is 300 mV. The
Vrms=300
output signal amplitude can be
Analog
RX Audio
signal
output
mV±10%@1
kHz 60% system max.
changed
by
modifying
the
deviation
“Analog RX Gain” value via CPS.
It forms differential output
Analog
together with SPK+. Max
output
power output: 10 W(R=8
SPK-
External speaker outputΩ)
USB
10
data
D+
USB data
USB data cable+
cable+
Ground
11
USB_GROUND
cable
GP5_2
12
GPIO. Programmable via CPS;
GPIO
5V TTL
(Monitor)
Monitor feature by default.
Accessory identification interface;
high level by default. This pin and
13
ACC_IO2
Digital input
Pin 15 (ACC_IO3) can compose
5V TTL
three
accessory
identification
statuses. Please refer to the
“DB26 Accessory Identification
80
UHF1 (400–470 MHz)
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Matrix Table” below for detailed
function definitions.
Emergency switch. This pin is
14
Emerg Sw
Digital input
5V TTL
valid when low level is input.
Accessory identification interface;
high level by default. This pin and
Pin 13 (ACC_IO2) can compose
three
15
ACC_IO3
Digital input
accessory
identification
5V TTL
statuses. Please refer to the
“DB26 Accessory Identification
Matrix Table”” below for detailed
function definitions.
Programmable input pin (PTT
key of external Mic by default; its
16
PRGM_IN_PTT
Digital input
5V TTL
function is programmable via
CPS). It is valid at low level.
Audio
17
Audio Ground
(grounding)
It forms differential output
Analog
together with SPK-. Max
18
SPK+
signal
External speaker output+
power output: 10 W(R=8
output
USB
19
Ω)
data
D-
USB data
USB data cable-
5V TTL
GPIO. Programmable via CPS.
5V TTL
GPIO. Programmable via CPS.
cableDigital
20
GP5_8
input/output
Ground
21
Ground
cable
Digital
22
GP5_7
input/output
16
UHF1 (400–470 MHz)
Pin
No.
Name
Signal Electrical
Performance
Type
Description
Digital
23
GP5_6
5V TTL
GPIO. Programmable via CPS.
input/output
AUX Audio Out
Analog
Load impedance >1 kΩ
Auxiliary audio (external speaker)
output
Vrms=300 mV±10%
output 1
AUX Audio Out
Analog
Load impedance >1 kΩ
Auxiliary audio (external speaker)
output
Vrms=300 mV±10%
output 2
Ignition voltage input >7 V
Input pin for ignition voltage
24
25
Analog
Ign
Sense
26
voltage
Detect Pin
input
Note
When a pin is marked with 5 V TTL level, this pin has the pull-up function. If the pin needs to be set to
high level, empty this pin.
DB26 Accessory Identification Matrix Table (composed of Pin 13 and Pin 15):
Pin 13
Pin 15
High level
High level
Radio Status
Default status. The mobile radio is in USB slave mode or not
connected to any accessory.
The mobile radio is in USB master mode or connected to a USB
High level
Low level
smart accessory (such as palm microphone with keypad).
The mobile radio is connected to an external speaker (including
Low level
High level
desktop microphone with earpiece).
Low level
Low level
Reserved
5.3 Other Interfaces
J2 (LCD Display Interface)
Pin No.
Name
Description
GND
Grounding pin
VCI
2.5–3.3 V adjustable port
VCI
2.5–3.3 V adjustable port
IOVCC
1.65–3.3 V adjustable I/O port
80
UHF1 (400–470 MHz)
Pin No.
Name
Description
FLM
Synchronization signal control port
CS
Chip select signal
RS
Register select
WR
Write signal
RD
Read signal
10
DB0
11
DB1
12
DB2
13
DB3
14
DB4
15
DB5
16
DB6
17
DB7
18
DB8
19
DB9
20
DB10
21
DB11
22
DB12
23
DB13
24
DB14
25
DB15
26
DB16
27
DB17
28
RESET
Reset signal
29
IM3
Select data cable
Data bus
18
UHF1 (400–470 MHz)
Pin No.
Name
30
IM0
31
LEDA
32
LED_K1
33
LED_K2
34
LED_K3
Description
LED anode
LED cathode
J4 (Aviation Interface of Front Panel)
Pin No.
Name
Description
ACC_IO1
Digital input
PTT_IN
Digital input
External_Audio
Analog output
USB_D-
USB data cable
GND
Ground cable
USB_VBUS
Power supply
MIC_IN
Analog input
USB_D+
USB data cable
HOOK
Hook signal input
10
ACC_IO2
Digital input
J400 (Option Board Interface)
Pin No.
Signal
GPIO1
GPIO2
GPIO3
Function
I/O of the
Radio
resetting
I/O
GPIO4
GPIO5
Remark
(Option Board
VDD=3.3 V)
GPIO5: output signal of
GPIO
Voltage
RESET-OUT
the
option
VIH MIN=0.7VDD
board.
VIL MAX=0. 3VDD
GPIO4/GPIO5:
VOH MIN=0.8VDD
Unidirectional
VOL MAX=0.22VDD
interfaces. They require
output
their input resistances
are
80
greater
than
or
UHF1 (400–470 MHz)
Pin No.
Signal
Function
Voltage
I/O of the
Radio
Remark
(Option Board
VDD=3.3 V)
equal to 47 kΩ.
11
UART-TX
13
UART-RX
UART-CT
15
UART
UART
UART-RT
17
I2C –SDA
I2C -SCL
I/O
I2C
I2C
MCBSP-D
MCBSP-W
I/O
CLK
McBSP:
Multi-channel
MCBSP
buffered serial port
MCBSP-D
10
MCBSP-F
12
I/O
SX
14
AGND
AGND
80
AF OB TO
16
mV
output
AF
(standard
from
the
MAX: 700 mV
MB
option board to the
main board)
80
AF MB TO
18
mV
(standard
output from the main
AF
MAX: 700mV
OB
board to the option
board)
19
DGND
DGND
20
3V6 or 5V
Power
Voltage: 5.0 V
20
UHF1 (400–470 MHz)
J403 (Pin Interface)
Pin No.
Name
Description
Vbus USB
Power supply: +5 V
Ground
Ground cable
GP5_3
Digital input/output
SW B+ sense
Power supply
External Alarm
Analog voltage output
Power Ground
Power supply (grounding)
Tx Audio
Analog input
RX Audio
Analog output
Spkr-
Analog output
10
D+ USB
USB data cable+
11
USB_GROUDN
Ground cable
12
GP5_2
Digital input/output
13
ACC_IO2
Digital input
14
Emerg Sw
Digital input
15
ACC_IO3
Digital input
16
PRGM_IN_PTT
Digital input
17
Audio Ground
Audio ground
18
Spkr+
Analog output
19
D- USB
USB data cable-
20
GP5_8
Input/output
21
Ground
Ground cable
22
GP5_7
Input/output
23
GP5_6
Digital input/output
24
AUX Audio Out
Analog output
80
UHF1 (400–470 MHz)
Pin No.
25
Name
AUX Audio Out
Description
Analog output
26
Ign Sense
Analog voltage input
J404 (Front Panel Interface)
Pin No.
Name
Description
INT_MIC
Audio input
MIC_GROUND
Audio input (grounding)
ACC_IO1
Accessory identification interface 1
USB_VBUS
USB power supply
HOOK
HOOK
PTT
PTT
USB_D-
USB data cable D-
USB_D+
USB data cable D+
ACC_IO2
Accessory identification interface 2
10
UART2_RXD_A
Volume control port
11
UART2_TXD_B
12
EXTERNAL_AUDIO
Audio signal output by accessory (mobile radio)
13
SPKR1+
Speaker audio signal cable+
14
SPKR1-
Speaker audio signal cable-
15
5VD
Power supply
16
PRST
Reset signal
17
KB_C0
18
KB_C1
19
KB_C2
20
KB_C3
21
B_R0
Matrix keyboard
22
UHF1 (400–470 MHz)
Pin No.
Name
Description
22
B_R1
23
B_R2
24
CSLED
Backlight control IC chip select
25
CLOC
Backlight control IC clock
26
DATA
Backlight control IC data
27
OE_LCD
LCD read enable
28
WE_LCD
LCD write enable
29
CS2_LCD
LCD chip select
30
F_A1_LCD
LCD register select enable
31
F_D7
32
F_D6
33
F_D5
LCD data bus
34
F_D4
35
F_D3
36
F_D2
37
F_D1
LCD data bus
38
F_D0
39
GND
Grounding
40
PWB_IN
Power On/Off signal
80
UHF1 (400–470 MHz)
6. Tuning Description
6.1 Required Test Instruments
 Radio communication test sets: HP8921 and Aeroflex 3920
 Power supply: 15 A/30 V
 Multimeter
 Tuner software
6.2 Tuning Procedures
6.2.1 Tuning the Radio
After re-assembling the radio, you need to tune it with the Tuner software and HP8921.
The specific operations are described in the table below. After tuning the items of the current channel,
you must switch the radio to the next channel; otherwise, the adjustments will not be saved to the radio
properly.
Items
Method
TX Section
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to TX test mode.
2.
Open the Tuner software and go to “TUNE_DATA -> TX -> Reference
Oscillator Warp” in the left navigation tree. Then click the “Transmit On”
button.
Reference Oscillator
3.
Warp
Adjust the vernier on the Tuner until the frequency offset between the
frequency displayed on HP8921 and the frequency (Tx) displayed on
Tuner is less than or equals to ±40 Hz.
4.
Click the “Save” button on Tuner to save the existing value to the radio.
5.
Click the “Transmit Off” button on Tuner.
Here takes the tuning of low TX power for example.
1.
Transmit
Calibration
Power
Connect the radio to HP8921 via the antenna connector, and set HP8921
to TX test mode.
2.
Open the Tuner software and go to “TUNE_DATA -> TX -> Transmit
Power Calibration” in the left navigation tree. Then select an appropriate
channel.
24
UHF1 (400–470 MHz)
Items
Method
3.
Click the “Transmit On” button on Tuner.
4.
Adjust the power to the required level as follows:
Low power: 1 W (for version D/F)
Medium power: 25 W
High power: 45 W
5.
Click the “Save” button on Tuner to save the existing value to the radio.
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to TX test mode.
2.
Set the parameters on the HP8921 as follows:
IF Filter: 230 kHz
Filter1: <20 Hz HPF
Filter2: <15 kHz LPF
De-Emphasis: off
Transmit-to-Deviation
3.
Open the Tuner software and go to “TUNE_DATA -> TX ->
Transmit-to-Deviation” in the left navigation tree. Then click the “Transmit
On” button. Then set the modulation signal of HP8921 to “100 Hz”.
4.
Adjust the vernier on Tuner until the frequency deviation displayed on
HP8921 is “5 kHz”.
5.
Click the “Save” button on Tuner to save the existing value to the radio.
6.
Click the “Transmit Off” button on Tuner.
Here takes the low frequency deviation for example.
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to TX test mode.
2.
Set the parameters on the HP8921 as follows:
IF Filter: 230 kHz
Modulation Balance
Filter1: <20 Hz HPF
Filter2: <15 kHz LPF
De-Emphasis: off
3.
Open the Tuner software and go to “TUNE_DATA -> TX -> Modulation
Balance” in the left navigation tree. Then select an appropriate channel.
4.
Click the “Transmit On” button on Tuner. Then set the modulation signal
80
UHF1 (400–470 MHz)
Items
Method
of HP8921 to “100 Hz”.
5.
Adjust the value in the dialog box on Tuner until the frequency deviation
displayed on HP8921 is “5 kHz”.
6.
Press the Enter key on the keyboard to confirm your settings.
7.
Click the “Save” button on Tuner to save the existing value to the radio.
8.
Click the “Transmit Off” button on Tuner.
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to TX test mode.
Transmit
Oscillator
2.
Open the Tuner software and go to “TUNE_DATA -> TX -> Transmit
Voltage
Oscillator Voltage” in the left navigation tree.
3.
Click the “Save” button to save the existing value to the radio.
1.
Connect the radio to HP8921 via the antenna connector.
2.
Connect the Audio Out port of the radio to the Audio In port of HP8921,
RX Section
and set HP8921 to RX test mode.
3.
Set the parameters on the HP8921 as follows:
Output RF signal: -118 dBm/Frequency (current channel frequency)
Modulation frequency: 1 kHz
Modulation deviation: 3 kHz
Front-end Filter
4.
Open the Tuner software and go to “TUNE_DATA -> RX -> Front-end
Filter” in the left navigation tree. Adjust the vernier on Tuner until the
“SINAD” value displayed on HP8921 is greater than 14 dB.
5.
Set the output RF signal of HP8921 to -25 Bm/(current channel frequency
-36.675 MHz).
6.
Adjust the vernier on Tuner until the “SINAD” value displayed on HP8921
is less than 14 dB.
7.
Press the Enter key on the keyboard to confirm your settings.
8.
Click the “Save” button on Tuner to save the existing value to the radio.
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
Front-end Gain
to RX test mode.
2.
Set HP8921 to output an unmodulated RF signal with a value of “-70
26
UHF1 (400–470 MHz)
Items
Method
dBm/Frequency (current channel frequency)”.
3.
Press the Enter key on the keyboard to confirm your settings.
4.
Click the “Save” button on Tuner to save the existing value to the radio.
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to RX test mode.
2.
Receive
Oscillator
Open the Tuner software and go to “TUNE_DATA -> RX -> Receive
Oscillator Voltage” in the left navigation tree.
Voltage
3.
Set HP8921 to output an unmodulated RF signal with a value of “-47
dBm/Frequency (current channel frequency)”.
4.
Click the “Save” button to save the existing value to the radio.
6.2.2 Testing the Radio
After tuning all the items of the radio, you need to test the digital RF signal of the mobile radio via
Aeroflex 3920 (Digital Radio Test set).
Transmitting
Step 1
Connect the mobile radio to Aeroflex 3920 via the antenna connector.
Step 2
Open the Tuner software and go to “TEST -> TX -> Transmit BER (0.153)”.
Step 3
Select the channel to be tested and select the corresponding power level (High Power or Low
Power) in “Parameter” on Tuner.
Step 4
Click the “Transmit On” button on Tuner.
Step 5
Set the parameters on the Aeroflex 3920 as follows:
 Frq: Be consistent with the TX frequency of the channel to be tested.
 STD IB 511: .153
Step 6
Observe the “avg” value of “UUT TX Bit Err” parameter in “UUT Measurements” module of
Aeroflex 3920, which is the average bit error rate of the tested channel during transmitting.
The radio is operating properly when the Aeroflex 3920 parameters are as follows:
 FSK Error: ≤5%
 Symbol Clock Err: ≤100 Hz
 Signal Power: 3.9–4.5W
 Magnitude Error: ≤1%
 UUT TX Bit Err = 0%
80
UHF1 (400–470 MHz)
Step 7
Click the “Transmit Off” button on Tuner to finish testing.
Receiving
Step 1
Connect the antenna connector of the radio to the RF port of Aeroflex 3920, and set Aeroflex
3920 as follows (remain default values for other parameters):
 Frq: Be consistent with the frequency of the channel to be tested.
 STD IB 511: .153
 Lv1 (signal strength): -116 dBm (-110 dBm by default)
Step 2
Open the Tuner software and go to “TEST -> RX -> Receiver BER (0.153)”.
Step 3
Select the channel to be tested and click the “Start” button on Tuner.
Step 4
Observe the “Average Rate” displayed on Tuner.
You can set different “Average Num” (the calculation base of BER, which is “10” by default) to
obtain different “Average Rate”.
Step 5
Modify the value of “Lv1” parameter of Aeroflex 3920, so as to obtain the average BERs of the
tested channel under different signal strengths.
The mobile radio is operating properly when the average BER is less than 5%.
Note
When the parameter “Lv1” is set to “-110 dBm”, the mobile radio is operating properly when
the average BER is less than 1%.
Step 6
Click the “Stop” button on Tuner to finish testing.
28
UHF1 (400–470 MHz)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an controlled environment. This
equipment should be installed and operated with minimum distance 100cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
This equipment complies with IC RSS-102 radiation exposure limits set forth for an controlled environment. This
equipment should be installed and operated with minimum distance 100cm between the radiator and your body.
Cet équipement est conforme aux limites d'exposition aux radiations IC CNR-102 établies pour un
environnement contrôlé. Cet équipement doit être installé et utilisé avec une distance minimale de 440 cm entre
le radiateur et votre corps.
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences
et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée
aux deux conditions suivantes :
(1) L’appareil ne doit pas produire de brouillage;
81
UHF1 (400–470 MHz)
(2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le
fonctionnement.
80

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