Expert Electronics SunSDR2 Pro User manual

Expert Electronics
2017
SunSDR2
Hardware Manual
V1.2
PRO

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1. Precautions......................................................................................................................3
2. Technical characteristics ..................................................................................................5
3. Front and rear panel description ......................................................................................6
4. Connectors pin-out...........................................................................................................9
4.1 EXT CTRL......................................................................................................................9
4.2 MIC1 ............................................................................................................................10
4.3 MIC2 ............................................................................................................................10
4.4 PTT footswitch .............................................................................................................11
4.5 CW-key ........................................................................................................................11
5. Local operation ..............................................................................................................12
6. Remote operation ..........................................................................................................14
7. Default Settings .............................................................................................................14
8. Regulatory requirements................................................................................................15

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1. Precautions
To prevent damage to the transceiver, please read these operating rules carefully before
attempting to operate the transceiver.
Carefully read this manual first, otherwise connecting and operating the SunSDR2 PRO
could lead to fatal errors;
Visually inspect the SunSDR2 PRO transceiver for the absence of mechanic damages
before connecting it to PC;
If the SunSDR2 PRO was stored in abnormal climatic conditions, it is recommended to
keep it in normal operating temperatures for at least 2 hours before switching on;
Connecting the Transceiver to a PC should be done in accordance with the connection
diagram, given in the Manual;
Before connecting the SunSDR2 PRO to the AC power line, ensure it is grounded. Never
use the SunSDR2 PRO transceiver without grounding;
It is forbidden to connect the SunSDR2 PRO to PC with the voltage presence on it or in
the switched condition;
It is forbidden to use the power supply with the voltage more than +16 V. Remember!
The transceiver's power is the voltage direct current!
Before connecting the external devices to connector EXT CTRL read the Manual, learn
tables and diagrams of connecting the external devices;
DO NOT connect a VGA monitor to COM or CTRL port, you will damage the transceiver!
Remember! The transistor switches have limitations of supply voltage and current, going
through them. The power swap is forbidden;
DO NOT use the SunSDR2 PRO in temperatures lower than 0ºC (32ºF) and higher than
+75ºC (167ºF);
It is forbidden to use and store the Transceiver in the dusted rooms and on exposure to
direct sunlight;
Avoid the exposure of the atmospheric downfalls on the SunSDR2 PRO and never spill
any liquids (especially aggressive) on it;
It is forbidden to use the Transceiver during storms;
Don't open the Transceiver, it has radio elements, which have high-sensitivity to the static
electricity. This document contains all necessary information about the internal design to
satisfy the Users’ curiosity. To repair the Transceiver, ask the manufacturer;
Always disconnect the antenna from the Transceiver when not in use, or if there is a
danger of atmospheric electricity;

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Ensure the Transceiver and any connecting cables are free from the effects of
electromagnetic interference and uncontrolled currents and voltages;
To avoid damage to the Transceiver or causing harmful interference on air, it should only
be operated by competent HAMs;
Keep the Transceiver out of the reach of children.

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2. Technical characteristics
General coverage receiver in HF, MHz
0.09...65
General coverage receiver in VHF, MHz
95...148
Frequency coverage in HF in TX mode, MHz
All HF and 6m amateur frequencies
Frequency coverage in VHF in TX mode, MHz
144...146
Sensitivity, uV
0,07
Maximum transmitter's output power in HF, W
20
Maximum transmitter's output power in VHF, W
7
Blocking dynamic range in HF mode (BDR), dB
129
Blocking dynamic range in VHF mode (BDR), dB
>114
RF ADC clock frequency, MHz
160
RF ADC resolution, bit
16
RF DAC clock frequency, MHz
640
RF DAC resolution, bit
14
SNR, dBm
-130 (with 500 Hz bandwidth)
ENOB, bit
14
SFDR, dB
90-100 (depends on the RX frequency)
Recommended power supply, V
15
Supply voltage range, V
12...16
Local oscillator's stability, ppm
+/- 0.5
Maximum consumption current, А
5
Built-in audio codec resolution, bit
24
ALC input voltage range, V
0..4
Dimensions, mm (inches)
165х165х35 (6” ½ x 6” ½ x 1” 3/8)
Operating temperature, ºC (ºF)
0(32) to +75(167)
Weight, kg (lbs)
1,5 (3.3)

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3. Front and rear panel description
Front panel of the transceiver
Rear panel of the transceiver
Table with description of controls and connectors
№
Name
Description
1.
Headphones jack
Here you may connect a headphones with 16-
30 Ohm impedance or speakers.
2.
Electret microphone jack
Here you may connect an electret microphone
from a PC's headset

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3.
Dynamic microphone jack
Here you may connect a dynamic microphone
MH-31 or any other dynamic microphone with
the RJ-45 connector and similar pinout
4.
Power and connection
LED indicator
This indicator displays operation modes of the
transceiver:
-green color: LAN is active/connected;
- orange color: WiFi is active/connected (when
the transceiver has a WiFi option);
-red color: transmit mode is “ON”;
-blinking green or orange color: network setup
state, wait until blinking stops.
5.
Power on/off button
Press the button to power on/off the device
6.
WLAN antenna connector
This connector is installed when the transceiver
has a WiFi (WLAN) option
7.
External reference oscillator Input
10 MHz
10 MHz CMOS level input
Appropriate Voltage for this input: 10-13
dB/mW amplitude and 10MHz frequency.
Warning! Improper use or higher voltage may
damage the transceiver!
8.
RX OUT
Internal receiver's front-end output
Warning! Improper use or higher voltage may
damage the transceiver!
9.
ADC IN
Direct input, bypassing Band Pass Filters
(BPFs). ADC IN connector may be used for
connection of the receiving antennas,
transverters, additional BPFs, preamplifiers,
attenuators etc.
Warning! Improper use or higher voltage may
damage the transceiver!
10.
DAC OUT
Direct output, bypassing Band Pass Filters
(BPFs). The output can be used for connection
of the external power amplifiers, transverters
and as a generator of the measuring signal.
Transmission is possible only on the amateur
bands.
Warning! Improper use or higher voltage may
damage the transceiver!
11.
Power connector
Connector is intended for connection of DC
power source with voltage of up to +15V and
maximum load current 5A.
Transceiver has a shutdown circuit, protecting
device from the power polarity reversal.

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12.
LAN connector
LAN connector for connection of the
transceiver to the local network via the LAN
cable.
13.
KEY connector
CW key connector.
14.
PTT footswitch connector
PTT footswitch connector
15.
EXT CTRL connector
Use this connector to control external devices.
Warning! Improper use of this connector can
damage keys transceiver!
16.
ALC input
ALC input for external power amplifier
17.
A1 connector for VHF antenna
VHF antenna connector. Use it when you want
to operate on 2m band.
18;
19.
A2 and A3 connectors for HF
antennas
Use these connectors when you want operate
on HF or 6m band.
20.
RST (reset) button
Press this button to reset IP-address and UDP-
ports of the transceiver to the default IP values:
192.168.16.200, ports: 50001, 50002.
21.
LAN / WLAN (Wi-Fi) switch button
Press this button to switch the transceiver from
LAN to WLAN. If WLAN option is not installed,
transceiver will not operate when the WLAN
mode is selected. Single pressing of the button
changes operation mode.

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4. Connectors pin-out
4.1 EXT CTRL
Via the EXT CTRL connector, you can control external devices, such as power amplifiers,
antenna switches and tuners, wide or narrow band-pass filters.
Pins description of the EXT CTRL connector
No.
Pin Name
Description
1.
X1 –X7
Pins with open collector (programmable I/O with software)
2.
X8
Pin with open collector to control an external PA
3.
CP
Protective diode pin
4.
+12V
Pin for power supply +12V, MAX current 0.5 A
Attention! Do not connect loads with current above 0.5 A, it will
damage the transceiver
5.
G
Ground
6.
I1, I2
Button sensors, works on the input
7.
RA, RB
RS485 Interface

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4.2 MIC1
MIC1 connector is designed for connection of an electret microphone, PC headset or any
other electret microphone, which is intended to work with PC. JACK6.3 to JACK 3.5 adapter
is supplied with the transceiver. Circuit diagram for the electret microphone below.
JACK 6.3 mm connector pinout
4.3 MIC2
Dynamic microphones are less sensitive to the foreign noises due to the greater focus.
Dynamic microphones have a higher speech quality and signal/noise ratio during operation.
MIC2 connector is designed for connection of a dynamic microphone.
MD-15 dynamic microphone pin-out

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Pin description and numbering of MIC2 connector
4.4 PTT footswitch
The PTT footswitch allows you to turn the SunSDR2 PRO transceiver into TX mode.
Cable pinout for PTT footswitch connection
4.5 CW-key
Different CW-keys have different connectors. You may also use JACK 6.5 mm for connection
to PC.
CW-key connector pinout

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5. Local operation
Local operation is a standard way to use the SunSDR2 PRO transceiver. Make the following
connections as described below:
1. Connect headphones and microphone to the transceiver. If you have an electret
microphone or PC headset, connect the microphone to jack MIC1. If you have a dynamic
microphone, plug it into the jack MIC2. Headphones are plugged into the PHONES
connector;
2. Connect HF-antenna to the A3 connector;
3. Connect the transceiver and a PC with a CAT5 Ethernet cable;
4. Start the ExpertSDR2 software with the red Start button.
5. Open the Options→ Device menu and set the checkboxes according to the picture below:

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6. In the ExpertSDR2 main window select the microphone you are going to use;
7. Open Options→Sound Card menu and make sure that the Enable checkbox in the
Sound card half is unchecked. See picture below;
8. Click OK. If everything is done correctly, you will see the air noise on the panorama and
hear the sound in the headphones.

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6. Remote operation
Over the following link you may find the manual which thoroughly describes how to operate
the SunSDR2 PRO transceiver remotely.
7. Default Settings
Sometimes you may need to reset IP address and ports of the transceiver, to do that follow
the steps below:
1. Switch off the transceiver with the PWR button;
2. Press and hold the RST button on the rear panel of the transceiver, you will hear a light
click;
3. Switch on the transceiver with the PWR button. The LED will blink different colors (green
and red);
4. Release the RST button;
5. Wait until the LED turns to constant green light, it means the reset went successfully.
After the reset procedure the transceiver will have the default IP-address 192.168.16.200
and ports 50001, 50002.
In case there is something wrong with the device, but you cannot connect with it to figure it
out, you may try to do a “deep” reset:
1. Switch off the transceiver with the PWR button;
2. Press and hold L/W and RST buttons simultaneously;
3. Switch on the transceiver with the PWR button. The LED will blink different colors (green
and red);
4. Release RST and L/W buttons;
5. Wait until the LED turns to constant green light, it means the reset went successfully.
When the transceiver is switched on, the RST button won't be active. Pressing it doesn't
have any effect.
Warning!
Do not switch off the transceiver with the PWR button while LED is blinking.

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8. Regulatory requirements
We Expert Electronics LLC declare that SunSDR2 PRO transceiver has been tested in
accordance to essential protection requirements of the R&TTE Directive 1999/5/EC on the
approximation of the laws of the Member States relating to Radio Spectrum Matters and
found the rest results indeed meet the limitation of the relevant test standard(s) listed below:
EMC
EN 301 489-1: V 1.9.2 (2011)
EN 301 489-15: V 1.2.1 (2002)
Radio Spectrum
EN 301 783-1: V 1.2.1 (2010)
EN 301 783-2: V 1.2.1 (2010)
Type of Equipment: Base Station
Equipment Class: B
The system is to be operated in accordance with the laws of the telecommunications
regulatory agency in the country of use. A license is required to use this equipment, and the
operator must comply with the national frequency allocations for the county of use.
Testing Company: Worldwide Testing Service (Taiwan) Co., Ltd.
Place of issue: 6F, NO.58, LANE 188, RUEY-KUANG RD., NEIHU, TAIPEI 114, TAIWAN,
R.O.C.
Date of testing: August 14, 2015
Person Responsible: Rex Kao (Signature on file)
RoHS Directive
Expert Electronics LLC confirms that we place on the market products sourced from
suppliers who have confirmed that their products are RoHS compliant. Expert Electronics
LLC declares that this equipment complies with the restriction of the use of certain hazardous
substances in electrical and electronic equipment.
Waste Disposal
The device may not be disposed of with household waste! This device complies with EU
Directive on Electronic and electrical equipment (WEEE regulation) and will therefore not be
disposed of with household waste. Dispose of the device to your local collection points for
electronic equipment!

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©Copyright 2017, Expert Electronics LLC. All Rights Reserved.
DUC DDC SDR Series, SunSDR2 PRO Transceiver. Specifications are subject to change
without notice or obligation and specifications are only guaranteed within the amateur radio
bands.
V1.2 - 03/02/2017