Hytera Communications MD78XIU1 Digital Mobile Radio User Manual
Hytera Communications Corporation Limited Digital Mobile Radio Users Manual
Users Manual
UHF1 (400
–
470 MHz)
Contents
i
UHF1 (400–470 MHz)
Contents
UHF1 (400
–
470 MHz)
ii
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
UHF1 (400–470 MHz)
80
1. Product Controls
Front Panel
No. Part Name No. Part Name
1
Volume Control/Group Call Selector
Knob 8 Up Key
2 LED Indicator 9 Down Key
3 LCD Display 10 Speaker
4 OK/Menu Key 11 Redial/Answer/Call Key
5 Back/Group Call Management Key 12 Programmable Keys
6 Dial-back/End/Home Screen Key 13 Microphone Connector
7 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.
UHF1 (400–470 MHz)
2
Rear Panel
No. Part Name No. Part Name
1 RF Antenna Connector 3 Accessory Connector
2 Power Inlet 4 GPS Antenna Connector
Note
The GPS antenna interface is only available for MD78XG.
UHF1 (400–470 MHz)
80
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.
UHF1 (400–470 MHz)
4
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)
80
3. Exploded View and Packing Guide
3.1 Exploded View
Part list:
No. Part No. Description Qty.
No. Part No. Description Qty.
1
6300109000000
Aluminum chassis
1
27
6100334000000
O-ring for encoder switch
1
2
7500358000000
Heat sink pad
1
28
4399030000020
Rotary switch
1
3
6100492101000
Waterproof ring for front
case
1
29
41078001000J0
PCB for control panel
1
4
4210090000200
Signal cable
1
30
6100533101000
Waterproof ring for
aluminum chassis
1
5
5208010100010
Connector (male)
1
31
6300126000000
Upper cover of the
aluminum chassis
1
6
6001079000000
Light-guide plate for keys
1
32
7103015000000
Machine screw
11
7
7300048000000
Metal dome
1
33
6001080000000
Plastic upper cover
1
8
6100408001000
Waterproof ring for
microphone jack
1
34
6100496000000
Conductive silicone
rubber for main board
1
9
6100488000000
P+R front panel keys
1
35
7103008000400
Machine screw
2
10
6201893000000
Speaker fixing sheet
1
36
7500272000000
Heat sink pad
2
11
7102606021000
Self-tapping screw
6
37
/
Semi-finished PA with
heat sink pad
1
UHF1 (400–470 MHz)
6
No. Part No. Description Qty.
No. Part No. Description Qty.
12
4210080000700
Speaker cable (with 2-Pin
plug)
1
38
3414999000020
PNP transistor
1
13
5001210000390
Speaker
1
39
/
Main PCB
1
14
7400297000000
Speaker felt
1
40
6100532100000
D_SUB waterproof ring
1
15
7102505000110
Machine screw
3
41
5208026100000
Jack
1
16
6001076000010
Front case for control
panel
1
42
6100530100000
Waterproof ring for power
socket
1
17
860P580600100
Logo
1
43
5205002100110
Power socket (male)
1
18
6201739000000
Inner lining for knob
1
44
3103994770150
Electrolytic capacitor
1
19
6000876000000
Encoder knob
1
45
7212002500000
Nut
1
20
6100493000000
Power on/off key
1
46
6100531100000
Waterproof ring for
antenna connector
1
21
6100404000000
Emergency key
1
47
4401000009000
BNC RF connector
1
22
7500344000000
PORON pad
1
48
6100494000000
GPS soft stopple
1
23
5130000000040
TFT LCD 2.0" TFT
1
49
7500159000100
Thermal conductive
silicone rubber
2
24
6001078000000
LCD bracket
1
50
7500357000000
Heat sink pad
1
25
5202002100270
Board-to-wire connector
1
A
6100574100000
O_ring
11
26
7207003700000
Nut
1
B
7500344000000
PORON pad
1
Note
Parts that are not marked with Part No. may vary with the radio frequency band.
UHF1 (400–470 MHz)
80
3.2 Packing Guide
UHF1 (400–470 MHz)
8
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
Current Drain
Standby: <0.6 A
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
Power Output
Low: 1–25 W
High: 1–45 W
Conducted/Radiated
Emission
-36 dBm <1 GHz
-30 dBm >1 GHz
FM Modulation
10K1F3E@12.5 kHz
15K1F3E@25 kHz
4FSK Digital Modulation 12.5 kHz (data only): 7K70FXD
Modulation Limit
±2.5 kHz@12.5 kHz
±5.0 kHz@25 kHz
UHF1 (400–470 MHz)
80
FM Hum and Noise
40 dB@12.5 kHz
45 dB@25 kHz
Adjacent Channel Power
60 dB@12.5 kHz
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
Sensitivity
Analog:
0.3 μV (12 dB SINAD)
0.22 μV (Typical) (12 dB SINAD)
0.4 μV (20 dB SINAD)
Digital:
0.3 μV /BER5%
Adjacent Channel
Selectivity
TIA-603: 65 dB@12.5 kHz/75 dB@25 kHz
ETSI: 60 dB@12.5 kHz/75 dB@25 kHz
Intermodulation
TIA-603: 75 dB@12.5/25 kHz
ETSI: 70 dB@12.5/25 kHz
Spurious Response
Rejection
TIA-603: 75 dB@12.5/25 kHz
ETSI: 70 dB@12.5/25 kHz
Blocking
TIA-603: 90 dB
ETSI: 84 dB
Hum and Noise
40 dB@12.5 kHz
45 dB@25 kHz
Rated Audio Power
Internal (20 Ω load): 3 W
External (8 Ω load): 7.5 W
Max. Audio Power Internal (20 Ω load): 8 W
UHF1 (400–470 MHz)
10
External (8 Ω load): 20 W
Rated Audio Distortion ≤ 3%
Audio Response +1 dB to -3 dB
Conducted Spurious
Emission < -57 dBm
Environment
Operating Temperature -30℃ to +60℃
Storage Temperature -40℃ to +85℃
ESD
IEC 61000-4-2 (level4)
±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)
Cold Start < 60s
TTFF (Time To First Fix)
Hot Start <10s
Horizontal Accuracy <10 m
Note
All Specifications are tested according to applicable standards, and subject to change without notice
due to continuous development.
UHF1 (400–470 MHz)
80
4.2 Blind Spot
No. Blind Spot (MHz) No. Blind Spot (MHz)
1 403.2 5 414
2 422.4 6 432
3 441.6 7 450
4 460.8 8 468
UHF1 (400–470 MHz)
12
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 Type Signal Electrical
Performance Description
1
Accessory
identification
interface 1
Digital input 3.3 V CMOS
Pin 1 and Pin 10 (accessory
identifier interface
2) compose
an accessory identification
matrix. Please refer to the
“10-
pin Accessory Identification
Matrix Table” below for detailed
function definitions.
2 PTT input Digital input 3.3 V CMOS
PTT input for the palm
microphone, which is valid at
low level.
3
External audio
output
Analog
output
Load impedance >1 kΩ
Vrms=600mV±10%@1
kHz
60% system max.
deviation
Accessory audio output. When
“Mic Audio Output” is selected
via CPS, this pin will output the
received audio signal.
4 USB_D-
USB data
cable- USB data
When this pin is used for USB
function, USB function of DB26
will be disabled.
5 GND Ground
cable / /
6 USB_VBUS
USB power
supply
Power supply: 5 V; current
limiting: 500 mA
This pin provides power supply
to the USB accessory. It outputs
a 5 V voltage when accessory
identification code is 00|01|10,
and out
puts low level when the
code is 11.
UHF1 (400–470 MHz)
80
Pin
No.
Name Type Signal Electrical
Performance Description
7 Mic input Analog input
Modulation sensitivity
Vrms=80mV±10%@1kHz
60%system max. deviation
Mic input for palm microphone
8 USB_D+
USB data
cable+ USB data
When this pin is used for USB
function, USB function of DB26
will be disabled.
9 HOOK Digital input 3.3V CMOS
High level by default; valid at low
level.
HOOK and MONITOR functions:
Press this key, the level
changes from high to low. When
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.
10
Accessory
identification
interface 2
Digital input 3.3V CMOS
Pin 1 and Pin 10 (accessory
identifier interface 1) compose
an accessory identification
matrix.
Please 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 Radio Status
Low level Low level Reserved
Low level High level
The mobile radio is in USB master mode or connected to a USB
smart accessory (such as palm microphone with keypad).
High level Low level The mobile radio is connected to an external speaker (including
desktop microphone with earpiece).
UHF1 (400–470 MHz)
14
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 Type Signal Electrical
Performance Description
1 Vbus USB
power supply
Power
output
Power supply: +5V; current
limiting: 500 mA
Pin 1 and Pin 10 (accessory
identification interface 2)
compose an accessory
identification
matrix. This pin
outputs a 5 V voltage when
accessory identification code is
00|01|10, and outputs low level
when the code is 11.
2 Ground
Power
supply
(grounding)
/ /
3 GP5_3
(Chan_Act) GPIO 5V TTL GPIO. Programmable via CPS.
4 SWB+ Power
output
Power supply :13.2V±15%;
output current ≤1 A
Power output: 13.2 V; output
current: ≤1 A
UHF1 (400–470 MHz)
80
Pin
No. Name Type Signal Electrical
Performance Description
5 External Alarm
Analog
voltage
output
13 V alarm output
Programmable output pin
(“External Horn & Lights” feature
by default, programmable via
CPS).
6 Power Ground
Power
supply
(grounding)
/ /
7 TX Audio Analog
signal input
Vrms=80 mV±10%@1 kHz
60% system max.
deviation
This pin is used for signal input of
external MIC. The audio path is
valid when the external Mic PTT
is held down.
8 RX Audio
Analog
signal
output
Load impedance>1kΩ
Vrms=300 mV±10%@1
kHz
60% system max.
deviation
Default output is 300 mV. The
output signal amplitude can be
changed by modifying the
“Analog RX Gain” value via CPS.
9 SPK- Analog
output
It forms differential output
together with SPK+. Max
power output
: 10 W(R=8
Ω)
External speaker output-
10 D+
USB data
cable+ USB data USB data cable+
11 USB_GROUND Ground
cable / /
12 GP5_2
(Monitor) GPIO 5V TTL
GPIO. Programmable via CPS;
Monitor feature by default.
13 ACC_IO2 Digital input
5V TTL
Accessory identification interface;
high level by default. This pin and
Pin 15 (ACC_IO3) can compose
three a
ccessory identification
statuses.
Please refer to the
“
DB26 Accessory Identification
UHF1 (400–470 MHz)
16
Pin
No. Name Type Signal Electrical
Performance Description
Matrix Table”
below for detailed
function definitions.
14 Emerg Sw Digital input
5V TTL
Emergency switch. This pin is
valid when low level is input.
15 ACC_IO3 Digital input 5V TTL
Accessory identification interface;
high level by default. This pin and
Pin 13 (ACC_IO2) can compose
three a
ccessory identification
statuses. Please refer to the
“
DB26 Accessory Identification
Matrix Table”” below for detailed
function definitions.
16 PRGM_IN_PTT Digital input
5V TTL
Programmable input pin (PTT
key of external Mic by default; its
function is programmable via
CPS). It is valid at low level.
17 Audio Ground Audio
(grounding)
/ /
18 SPK+
Analog
signal
output
It forms differential output
together with SPK-
. Max
power output: 10 W(R=8
Ω)
External speaker output+
19 D-
USB data
cable- USB data USB data cable-
20 GP5_8 Digital
input/output
5V TTL GPIO. Programmable via CPS.
21 Ground Ground
cable / /
22 GP5_7 Digital
input/output
5V TTL GPIO. Programmable via CPS.
UHF1 (400–470 MHz)
80
Pin
No. Name Type Signal Electrical
Performance Description
23 GP5_6 Digital
input/output
5V TTL GPIO. Programmable via CPS.
24 AUX Audio Out
1
Analog
output
Load impedance >1 kΩ
Vrms=300 mV±10%
Auxiliary audio (external speaker)
output 1
25 AUX Audio Out
2
Analog
output
Load impedance >1 kΩ
Vrms=300 mV±10%
Auxiliary audio (external speaker)
output 2
26 Ign Sense
Detect Pin
Analog
voltage
input
Ignition voltage input >7 V Input pin for ignition voltage
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 Radio Status
High level High level Default status. The mobile
radio is in USB slave mode or not
connected to any accessory.
High level Low level
The mobile radio is in USB master mode or connected to a USB
smart accessory (such as palm microphone with keypad).
Low level High level The mobile radio is connected to
an external speaker (including
desktop microphone with earpiece).
Low level Low level Reserved
5.3 Other Interfaces
J2 (LCD Display Interface)
Pin No. Name Description
1 GND Grounding pin
2 VCI 2.5–3.3 V adjustable port
3 VCI 2.5–3.3 V adjustable port
4 IOVCC 1.65–3.3 V adjustable I/O port
UHF1 (400–470 MHz)
18
Pin No. Name Description
5 FLM Synchronization signal control port
6 CS Chip select signal
7 RS Register select
8 WR Write signal
9 RD Read signal
10 DB0
Data bus
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
UHF1 (400–470 MHz)
80
Pin No. Name Description
30 IM0
31 LEDA LED anode
32 LED_K1
LED cathode
33 LED_K2
34 LED_K3
J4 (Aviation Interface of Front Panel)
Pin No. Name Description
1 ACC_IO1 Digital input
2 PTT_IN Digital input
3 External_Audio Analog output
4 USB_D- USB data cable
5 GND Ground cable
6 USB_VBUS Power supply
7 MIC_IN Analog input
8 USB_D+ USB data cable
9 HOOK Hook signal input
10 ACC_IO2 Digital input
J400 (Option Board Interface)
Pin No. Signal Function I/O of the
Radio
Voltage
(Option Board
VDD=3.3 V)
Remark
1 GPIO1
GPIO
I/O
VIH MIN=0.7VDD
VIL MAX=0. 3VDD
VOH MIN=0.8VDD
VOL MAX=0.22VDD
GPIO5: output signal of
re
setting the option
board.
GPIO4/GPIO5:
Unidirectional output
interfaces. They require
their input resistances
are greater than or
3 GPIO2
5 GPIO3
7 GPIO4 O
9 GPIO5 RESET-OUT O
UHF1 (400–470 MHz)
20
Pin No. Signal Function I/O of the
Radio
Voltage
(Option Board
VDD=3.3 V)
Remark
equal to 47 kΩ.
11 UART-TX
UART
O
UART
13 UART-RX I
15 UART-CT
S I
17 UART-RT
S O
2 I2C –SDA
I2C
I/O
I2C
4 I2C -SCL O
6 MCBSP-D
R
MCBSP
I
McBSP: Multi-channel
buffered serial port
8 MCBSP-W
CLK I/O
10 MCBSP-D
X O
12 MCBSP-F
SX I/O
14 AGND AGND / / /
16
AF OB TO
MB AF I
80 mV (standard
output from the
option board
to the
main board)
MAX: 700 mV
18
AF MB TO
OB AF O
80 mV (standard
output from the main
board to the option
board)
MAX: 700mV
19 DGND DGND / / /
20 3V6 or 5V Power O Voltage: 5.0 V /
UHF1 (400–470 MHz)
80
J403 (Pin Interface)
Pin No. Name Description
1 Vbus USB Power supply: +5 V
2 Ground Ground cable
3 GP5_3 Digital input/output
4 SW B+ sense Power supply
5 External Alarm Analog voltage output
6 Power Ground Power supply (grounding)
7 Tx Audio Analog input
8 RX Audio Analog output
9 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
1
Analog output
UHF1 (400–470 MHz)
22
Pin No. Name Description
25 AUX Audio Out
2
Analog output
26 Ign Sense Analog voltage input
J404 (Front Panel Interface)
Pin No. Name Description
1 INT_MIC Audio input
2 MIC_GROUND Audio input (grounding)
3 ACC_IO1 Accessory identification interface 1
4 USB_VBUS USB power supply
5 HOOK HOOK
6 PTT PTT
7 USB_D- USB data cable D-
8 USB_D+ USB data cable D+
9 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
Matrix keyboard
18 KB_C1
19 KB_C2
20 KB_C3
21 B_R0
UHF1 (400–470 MHz)
80
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
LCD data bus
32 F_D6
33 F_D5
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
UHF1 (400–470 MHz)
24
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
Reference Oscillator
Warp
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.
3.
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.
Transmit Power
Calibration
Here takes the tuning of low TX power for example.
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 -
> Transmit
Power Calibration” in the left navigation tree. Then select an appropriate
channel.
UHF1 (400–470 MHz)
80
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.
Transmit-to-Deviation
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
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.
Modulation Balance
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
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
UHF1 (400–470 MHz)
26
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.
Transmit Oscillator
Voltage
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 -
> Transmit
Oscillator Voltage” in the left navigation tree.
3. Click the “Save” button to save the existing value to the radio.
RX Section
Front-end Filter
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,
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
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.
Front-end Gain
1. Connect the radio to HP8921 via the antenna connector, and set HP8921
to RX test mode.
2. Set HP8921 to output an unmodulated RF signal with a value of “-70
UHF1 (400–470 MHz)
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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.
Receive Oscillator
Voltage
1.
Connect the radio to HP8921 via the antenna connector, and set HP8921
to RX test mode.
2. Open the Tuner software and go to “TUNE_DATA -> RX -> Receive
Oscillator Voltage” in the left navigation tree.
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%
UHF1 (400–470 MHz)
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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.
UHF1 (400–470 MHz)
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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;
UHF1 (400–470 MHz)
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(2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le
fonctionnement.