HPSDR Janus Instruction Manual

High Performance Software Defined Radio
Open Source Hardware and Software Project
Project Description: http://openhpsdr.org
Janus and Ozy
Operation with PowerSDR
Text: Phil Harman, K6APH
Bill Tracey, KD5TFD
Joe de Groot, AB1DO
Graphics and Layout: Joe de Groot, AB1DO
Revision 2.1

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Table of Contents
Introduction........................................................................................................3
What you will Need.............................................................................................3
Janus Set-up.......................................................................................................5
1 I/Q Input Connection.........................................................................................................5
2 Balanced I/Q Input Connection........................................................................................6
3 Line In Connection............................................................................................................6
4 Microphone and PTT Connections..................................................................................6
3.5mm lug Connections...........................................................................................................................6
Microphone Jumper Settings....................................................................................................................7
TT Jumper Settings..................................................................................................................................7
5 I/Q utput Connection......................................................................................................8
6 Not Used.............................................................................................................................8
7 Audio ut...........................................................................................................................8
Alternative Power Connector..............................................................................................8
Ozy Setup............................................................................................................9
1 USB Connection................................................................................................................9
2 DB-9 Connection.............................................................................................................10
3 DB-25 Connection...........................................................................................................10
Software............................................................................................................11
Installing the USB Driver...................................................................................................11
Running PowerSDR............................................................................................................14
owerSDR Settings..................................................................................................................................14
Ozy SDR-1000 Control..............................................................................................................................15
Janus Audio and I/Q rocessing.............................................................................................................16
A comment on the LEDs on Janus and Ozy..................................................17
Table of Revisions............................................................................................18
Rev 2.1, Se tember 2009 2 © AB1DO

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Introduction
The HPSDR Ozy and Janus boards can be used together with PowerSDR v1.10.0 or higher to
control the SDR-1000 and/or process the I/Q and audio streams of both the SDR-1000 and
SoftRock1. This manual describes the connections to be made between Janus and the SDR-1000 or
SoftRock, Ozy and the SDR-1000 (for control) and Ozy and the PC. Subsequently it describes how
to setup PowerSDR to invoke Ozy control and/or use Janus for the audio processing.
What you will Need
Table 1 and Table 2 below summarize the hardware and software you will require to operate the
SDR-1000 or SoftRock using the Janus and Ozy boards and PowerSDR.
Janus is not a sound card in the traditional sense and it will not be recognized as such by
Windows. In fact the I/Q data are transmitted via Ozy over the USB connection to the PC. The use
of Janus and Ozy requires PowerSDR2 v1.10.0 or higher.
Table 1: Hardware Requirements
Hardware Comment
Atlas board3Backplane for all HPSDR boards
Ozy board Control data and digital I/ streams to/from PC
Janus board AD/DA between PC and SDR-1000 or SoftRock, PTT and audio in/out
Atlas Power Supply PC ATX type or equivalent (Alternatively, power can be fed through Janus board,
see Fig 1 on page 5 and page 8)
SDR-1000 or SoftRock RF front end recognized by PowerSDR
Microphone cable To connect a microphone (incl PTT) to Janus, see Fig 1 on page 5 and page 6
1/8” stereo audio cables I/ connections between Janus and SDR-1000/SoftRock, see Fig 1 on page 5 and
pages 5 and 8
USB cable Connection between Ozy and PC, see Fig 3 and text on page 9
25-pin control cable Between Ozy and SDR-1000 DB-25 connectors to enable Ozy to control the
SDR-1000, see Fig 3 on page 9 and page 10
Key and/or PTT Key and/or alternative PTT connection through Ozy DB-9 connector, see Fig 3 on
page 9 and page 10
[INTENTIONALLY LEFT BLANK]
1 Any other associated SDR that will work with PowerSDR can also be used.
2 Currently PowerSDR is the only known SDR software that has been modified to work with Janus and O y. We expect
that in time, other software may also be modified, or newly created.
3 At the time of this writing W B2ZXJ is developing an Atlas Lite, which only has 2 Euro-connectors.
Rev 2.1, Se tember 2009 3 © AB1DO

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Table 2: Software Requirements
Software Comment
Ozy USB Driver USB Driver to enable the PC to communicate with Ozy, see page 11
.Net 1 Framework Required to run PowerSDR, see page 14
.Net 2 Framework Required to run Ozy initialization software
Power SDR v1.10.0 or later Required to Operate PowerSDR with Janus/Ozy, see page 14 and following
In the following, the set-up of and connections to Janus and Ozy will be explained in detail,
followed by the PowerSDR settings.
[INTENTIONALLY LEFT BLANK]
Rev 2.1, Se tember 2009 4 © AB1DO

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Janus Set-up
During normal operation and after Ozy firmware being loaded, four red LEDs are lit as indicated.
To use the Janus board with the SDR-1000 nine jumpers must be set. Six of these are indicated in
light blue in Fig 1 below. The remaining three relate to microphone and PTT connections and to
the microphone bias. These are explained in detail below. For ease of reference, the i/o jacks in
Fig 1 have been enumerated and each will now be dealt with in turn.
1 I/Q Input Connection
This is the I/Q connection to the associated SDR's receiver. For the SDR-1000, connect to the jack
labeled “To Line In” with a 3.5mm (⅛”) stereo audio cable.
Rev 2.1, Se tember 2009 5 © AB1DO
Fig 1: Janus Board Indicating Jumper Settings, Connections and LEDs
From
SDR-1000
“To Line In”
Line In
Mic & PTT
Input
To SDR-1000
“To Line Out”
Audio Out to
Headphones/
Pow ered
Speakers
See Text for
Mic, Bias
and PTT
Jumper
Settings
1
2
3
4
5
6
7
Indicates LED Normally On Indicates Jumper To Be Set

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
2 Balanced I/Q Input Connection
Not used with the SDR-1000 or SoftRock, nor any other associated SDR receiver that does not
deliver it's I/Q signals in balanced audio format.
3 Line In Connection
Connect to an audio source (such as the playback of a recording) with a 3.5mm audio cable. This
connection bypasses the microphone preamp. Do not confuse this jack with the I/Q Input jack
(#1) above.
4 Microphone and PTT Connections
Connect the microphone and any PTT connection from the microphone through a 3.5mm tip-ring-
sleeve audio plug.
3.5mm lug Connections
Connect the Sleeve to the outer braid of the coaxial
microphone cable (see Fig 2).
Since there is no standard relating to the wiring of
microphone plugs Janus allows several options:
●The microphone may be connected to either the tip or
the ring (see Fig 2Error: Reference source not found).
●If the microphone has a PTT button, this can be
connected to the opposite terminal (ring or tip) to
where the microphone signal is connected.
Note: THE PTT BUTTON SHOULD PRESENT A OLTAGE FREE CONTACT THAT CONNECTS
ITS ASSOCIATED PIN TO THE OUTER SLEE E OF THE COAXIAL MICROPHONE CABLE WHEN
PRESSED. THIS IS THE MOST COMMON WIRING FOR A PTT BUTTON, BUT USERS ARE
AD ISED TO CHECK THE CONNECTIONS WITH A MULTIMETER IF UNSURE OF THE EXACT
CONFIGURATION.
[INTENTIONALLY LEFT BLANK]
Rev 2.1, Se tember 2009 6 © AB1DO
Fig 2: Microphone Plug
Connections

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Microphone Jumper Settings
Janus has three jumpers, just behind the microphone
and PTT jack (#4), which need to be set in accordance
with the connections chosen above (see the “gray box”
in Fig 1) . These are identified on the board as Audio,
PTT and Bias respectively and together grouped as Mic.
Additionally the R (ring) and T (tip) positions are
identified (see Table 3Error: Reference source not
found).
●Set the AUDIO jumper to identify the terminal
(tip or ring) that the microphone is connected to.
●Janus can provide DC bias for use with Electret
microphones. If your microphone requires a DC
bias, set the BIAS jumper to the same terminal
(tip or ring) the microphone is connected to.
Note: IF YOUR MICROPHONE DOES NOT
REQUIRE A DC BIAS THEN DO NOT FIT A
JUMPER.
TT Jumper Settings
If your microphone is fitted with a PTT switch, then set the PTT jumper to identify the terminal
(ring or tip) that this PTT switch is connected to (see Table 4).
Note: MAKE SURE THIS IS NOT THE SAME TERMINAL YOUR MICROPHONE IS CONNECTED TO.
Note: DO NOT SET THIS JUMPER IF YOUR MICROPHONE HAS NO
PTT SWITCH OR YOU DO NOT CONNECT IT.
WARNING: IF YOUR MICROPHONE PLUG USES TIP AND
SLEE E CONNECTIONS ONLY AND YOU SET THE PTT JUMPER TO
THE RING SETTING, THE PTT ON THE ASSOCIATED SDR WILL BE
PERMANENTLY ACTI ATED.
If you wish to connect an external PTT switch connect it between
the sleeve terminal of the plug and which ever terminal is not
being used by the microphone. Set the PTT jumper accordingly.
Note: AN ALTERNATI E PTT INPUT IS A AILABLE THROUGH
THE DB-9 CONNECTOR ON THE OZY BOARD - SEE PAGE 10 FOR
MORE DETAILS.
Note: PTT AND CW MUST BE CONNECTED TO OZY/JANUS AND NOT TO THE SDR-1000 JACKS.
THIS MAY CHANGE IN FUTURE AS THE SOFTWARE GETS UPDATED.
Rev 2.1, Se tember 2009 7 © AB1DO
Table 4: PTT
Jumper Settings
PTT
Ring Tip
Table 3: Microphone and
Jumper Settings
Bias Microphone
Tip Ring
No
Yes

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
5 I/Q utput Connection
This is the I/Q connection to the associated SDR's exciter. For the SDR-1000, connect to the jack
labeled “To Line Out” with a 3.5mm (⅛”) stereo audio cable.
6 Not Used
Note: E EN THOUGH THIS CONNECTOR IS IDENTIFIED ON YOUR BOARD (SILK SCREEN) AS THE
PHONES CONNECTOR, IT IS NOT USED AS SUCH WHEN USED WITH POWERSDR. THE BOARD
INDICATIONS ARE ONLY GENERIC. THE INPUTS AND OUTPUTS ON JANUS CAN BE RE-
CONFIGURED BY THE SOFTWARE LOADED INTO ITS CPLD.
7 Audio ut
Connect to either a set of headphones or powered speakers using a stereo 3.5mm plug. Connect
the right channel to the Tip and the left channel to the Ring.
Note: E EN THOUGH THIS JACK IS IDENTIFIED AS PWM ON YOUR BOARD, IT IS INDEED USED
AS THE AUDIO OUT JACK IN THIS APPLICATION. SEE THE PRE IOUS NOTE.
Alternative Power Connector
On the Janus board, just beneath the Audio Out connector (#7) are four terminals that can be
used to feed power to Janus, and via the Atlas backplane, to Ozy. These terminals may be used
instead of the Molex power connector on the Atlas board.
[INTENTIONALLY LEFT BLANK]
Rev 2.1, Se tember 2009 8 © AB1DO

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
Ozy Setup
To use the Ozy board with the SDR-1000, 3 jumpers need to be set, indicated in light blue in Fig
3. One LED is lit indicating the +5 power supply. (All other LEDs are under software control).
For ease of reference, the i/o jacks in Fig 3 have been enumerated and each will now be dealt with
in turn.
1 USB Connection
Connect the USB port (1) to a USB2 port on your PC. No power is drawn from the PC USB port so
a powered hub etc. is not required. It is best to use the type of USB lead that has a ferrite bead
built into it, if available, and connect the bead end into Ozy.
Rev 2.1, Se tember 2009 9 © AB1DO
Fig 3: zy Board showing Connections
1
2
3
To C
USB
ort
To
SDR-1000
DB-25
Connector
Indicates LED Normally On Indicates Jumper To Be Set
Key and
alternative
PTT

JA N U S & O Z Y O P E R A T I O N W I T H P O W E R SDR
2 DB-9 Connection
The DB-9 jack (2) can be used to connect a PTT and/or a key.
●From Ozy_Janus.rbf v1.6 onwards the PTT is independent from
the Dot and Dash signals: it is connected to pin 8 and needs to
be grounded to transmit. The ground available on pin 5 can be
used for this.
●To connect a key, connect the dash to pin 6 and the dot to pin
7 as shown in Table 5.
●These pins need to be grounded to activate them, for which pin
5 should be used.
○To use this key, you will need to enable it in PowerSDR. To
do so, click on Setup and then select the DSP tab followed
by the Keyer Sub-tab. In the Connections section, select
Ozy as shown in Fig 4 below.
3 DB-25 Connection
If you are using Ozy to control the SDR-1000, connect the DB-25 jack (3) to the DB-25 jack on
the SDR-1000, marked “To Parallel Port”. Use a shielded male-to-male lead with all 25 pins
connected of the shortest practical length. If a lead with an integral ferrite bead is available, use
Rev 2.1, Se tember 2009 10 © AB1DO
Fig 4: Selecing zy as the Primary Keyer Connection in PowerSDR
Table 5: Connecting a
Key and/or PTT to zy
Ozy
DB 9 Pin Key
5 Common
6 Dash
7 Dot
8 PTT