Novasub xDR-DSP User manual

xDR-DSP –Diver Intercom Manual
Operations Manual
xDR-DSP –Digital Diver Intercom radio with
DSP
NOVASUB standard digital 2 or 4 Diver Intercom
radio built in different Novasub Surface Control
configurations
xDR firmware: v0.12B39 and DSP firmware: v0.22
Build 39 Date: 30-08-2021
Seascape Subsea BV
De Hoogjens 22
4254 XW Sleeuwijk
The Netherlands
T. [phone]
E. [email protected]m
www.novasub.com
www.seascapesubsea.com

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Index
NEW & FIXED.....................................................................................................................................................................................3
ABBREVIATIONS ................................................................................................................................................................................4
INTRODUCTION .................................................................................................................................................................................5
DSP.....................................................................................................................................................................................................5
Features .............................................................................................................................................................................................5
Options...............................................................................................................................................................................................5
SPECIFICATIONS ................................................................................................................................................................................6
AUDIO SCHEMATICS ..........................................................................................................................................................................7
2DR audio flow...................................................................................................................................................................................7
4DR audio flow...................................................................................................................................................................................8
CONTROLS.........................................................................................................................................................................................9
AUDIO CONNECTIONS .....................................................................................................................................................................10
WIRELESS HEADSETS .......................................................................................................................................................................11
Control .............................................................................................................................................................................................11
Pairing ..............................................................................................................................................................................................11
MENU..............................................................................................................................................................................................12
Startup display .................................................................................................................................................................................12
Battery status...........................................................................................................................................................................12
Menu access and control.................................................................................................................................................................12
Menu control ...........................................................................................................................................................................12
Main Menu.......................................................................................................................................................................................13
Vol. Tender...............................................................................................................................................................................13
Vol. Ext. Speaker ......................................................................................................................................................................13
Comms Mode...........................................................................................................................................................................13
Main settings ...........................................................................................................................................................................14
Display settings ........................................................................................................................................................................14
Startup Function ......................................................................................................................................................................14
Main settings ...................................................................................................................................................................................15
Can hear selection....................................................................................................................................................................15
Diver 1......................................................................................................................................................................................16
Tender......................................................................................................................................................................................18
Wireless ...................................................................................................................................................................................20
Inputs .......................................................................................................................................................................................21
Outputs ....................................................................................................................................................................................22
Ext. Spk. Can Hear ....................................................................................................................................................................23
Reset Settings...........................................................................................................................................................................23
Prompt password.....................................................................................................................................................................23
Firmware version .....................................................................................................................................................................24
OPTIONAL & ACCESSORIES ..........................................................................................................................................................25
Wireless headsets ............................................................................................................................................................................25
Microphone .....................................................................................................................................................................................27
Headset............................................................................................................................................................................................29
Depth display hardware...................................................................................................................................................................31
DDG..........................................................................................................................................................................................31
PCBDDSI ...................................................................................................................................................................................31
HELP & SUPPORT.........................................................................................................................................................................32
WARRANTY .................................................................................................................................................................................33
Warranty Period...............................................................................................................................................................................33
Exclusions and Limitations...............................................................................................................................................................33
This Limited Warranty is not enforceable if item: ...........................................................................................................................33
Limitation of Liability .......................................................................................................................................................................33

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
New & Fixed
In Build 39:
•Added an On/Off switch for VOX in the menu
•Fixed the Loudness of the External speaker

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Abbreviations
Ah
Ampere per hour
Vdc
Volt DC
Vac
Volt AC
Vpp
Volt peak to peak
DSP
Digital signal processing
PTT
Push to Talk
2-wire (simplex)
Two wire used for communication. The Microphone and earphones of the diver share
the two wires in the umbilical.
4-wire (duplex)
Four wires used for communications. Two wires are used for the microphone and two
wires are used for the earphones.
Mic
Microphone (Diver, panel or headphone/set)
Head
Earphone (diver or headphone/set)
HS
Headset
WHS
Wireless Headset
H
Wireless Headset
D
Diver
T
Tender (operator/supervisor)
HD
Half Duplex (Diver is always heard, Tender needs to press PTT to talk to the diver)
FD
Full Duplex (Full open communication between divers and divers-Tenders)
Vol.
Volume (gain)
Int.
Internal
Ext.
External
SPK
Speaker
Aux
Auxiliary audio input or output
Rec
Output to recorder or Audio output
CW
Clock-wise
CCW
Counter clock-wise
FFM
Full Face Mask

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Introduction
The xDR Diver Intercom is a self-contained , Two / Four diver Intercom for a 2- or 4- wire communication between the
operator (Tender) and divers. The xDR can operate in half duplex/full duplex mode Tender to Diver and full duplex
between divers (round Robin). The Tender may choose to talk with the divers via the panel microphone, hand held Mic,
headset Mic and Table Mic, using the PTT button. When pressing the PTT the Tender will communicate in full duplex
mode with the diver (only in 4 wire mode). Each diver has a volume control from Diver to Tender and a volume control
from Tender to diver. Apart from the Internal speaker an external speaker can be connected with separate amplifier and
volume control.
The xDR Diver Intercom is the latest generation diver intercom radio based on an internal digital process based DSP
(Digital signal processing). The DSP makes the xDR a complete adjustable Diver Intercom in which you can select what
you want to hear on the outputs and each input and output can be set to the required levels. The advantage of this is that
the xDR can be adjusted to the levels of your connected devices, like diver communication helmets and mask
microphones and speaker. But also the connected audio recording devices, or the audio input devices, like a MP3 player.
The standard xDR is a 2 channel diver radio with a connection of two divers. Each has the Volume control to and from the
diver from the Tender. An overall Tender Volume control. A built in Speaker and Microphone for the Tender. Each diver a
PTT (Push-to Talk) switch and a PTT All switch.
The xDR has a 2 line, 16 characters transflective display. The display is used to scroll through the menu and adjust the
required settings. Without using the Menu settings, by default the xDR will work as a standard 2 Diver intercom as you will
be used too. Using the Menu you have access to an extensive settings menu in which you can configure and adjust the
audio and other settings to your needs.
DSP
DSP means in general Digital Signal Processing, the xDR has an audio DSP. With DSP the audio can be duplicated,
adjusted, filtered, amplified, suppressed, etc. This makes it possible to easily route and adjust the audio signals from and
to the inputs and outputs. Also each input and output can be set to a required gain level. Another advantage is that on
each output can selected what you would like to hear.
That means that you can select at each Diver what he/she may here, but also on any output or speaker/headset.
All audio inputs are analog signals which are first digitized before passed on to the DSP. The audio is digital send to an
output where it is converted to an analog signal.
Features
•Fully audio configurable, select on each Diver, Tender and output what it may hear
•Each Diver, input and output has a gain level adjustment
•Separate amplifiers for Divers, Internal speaker and External speakers
•Transformer Isolated on all Divers, inputs and outputs
•3,5 mm jacks to connect any media / gaming headset with mic
Options
•Wireless headsets (two or four) with PTT
•Wireless hand held speaker/Mic
•Rugged waterproof Single ear headset with PTT
•Hand held wired Mic with PTT
•Table Mic with PTT button per diver and PTT all button
•Diver light power supply and control (24 vdc max 30 watt)
•Depth sensor which displays diver depth, dive time and max. diving depth per diver
First please read this manual thoroughly to understand all possibilities

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Specifications
Electrical
Input Impedance (Each Input)
250 Ohms
Frequency Response
300 - 10000 Hz
Common Mode Rejection 40 dB Minimum
40 dB Minimum
Output Impedance
4 Ohm
Diver Mic Sensitivity (Input)
15 mVpp
Headset Mic
159 mVpp
Inputs audio (Aux&DVR in)
2,82 Vpp
Outputs Audio (Rec, Out & Aux)
2,82 Vpp
Headset speaker
1 watt audio
Diver Output Power (RMS @ 4 Ohm Load, 12 Vdc)
7 watt audio
Speaker Output Power (4 Ohm)
15 watt audio
Inputs and outputs Isolation
Transformer galvanic Isolated
Internal Power Supply Voltage
12-32vdc 6 watt
Power Drain
0.2 –0.5 Ah (12v)
External Power supply voltage
100-240 vac
Battery
Lead-acid or Li-Ion
Battery Life
Depending of system, min. 12 hrs
Charging time
Depending of system
Mechanical
Front Panel Material & finish
Aluminum epoxy print coated
Case / Box / Panel
Depending of system
Configuration
2 or 4 Diver
Protection
IP 54, protected against spraying water

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Audio schematics
The below schematics shows the route of the audio to and from the connected devices. The Diver and Tender
connections are digitized to and from an analog input/output. Each digital audio signal is being filtered, adjusted and
amplified before being routed to another input/output.
The explanation of the used pictograms in the audio flow diagram:
Internal Gain setting
in Menu
Isolator
Audio
isolator
Rotary switch for Menu &
General volume
Selected
+
-
Volume Diver 1
to Tender
Volume setting with
turn knob
7 watt
Amplifier
Microphone
Un selected
2DR audio flow
Two Diver audio flow diagram
Headset
Tender 1
InternalSpeaker
Tender
Panel Mic
Can hear selection:
Diver2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver +
-
Volume Diver 1
to Tender
+
-
Volume
Tender
Can hear selection:
Diver 1,2
Tender1
Wireless Headset1
Wireless Headset2
Aux in
External speaker
+
-
Volume Ext.
Speaker
Mic Gain
Panel
Headset T1
Mic
Mic Gain HS
Mic Gain
Mic
Head
Diver 1
Aux Gain
DSP
mixer /
Filter
Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Isolator
Isolator
Isolator
DVR Gain
Isolator
Rec1
Volume
Isolator
Can hear selection:
Diver1
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver
Mic Gain
Mic
Head
Diver 2
Isolator
Isolator
Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
BTEXT
BlueTooth add-on for 2x Wireless Headsets
Mic
Wireless Headset1
WH1 Can hear selection:
Diver 1,2
Tender 1
Wireless Headset2
Aux in
WHS1 Mic Gain
WH2 Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Aux in
WHS2 Mic Gain
Mic
Wireless Headset2
+
-
Volume Diver 2
to Tender
Rec2
Volume
Isolator Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Aux1
Volume
Isolator
Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Aux2
Volume
Isolator
Can hear selection:
Diver 1,2
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Aux In
DVR In
15 watt
AUX2 out
AUX1 out
Rec2 out
Audio2 out
Rec1 out
Audio1 out
7 watt
15 watt
7 watt

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
4DR audio flow
Four Diver audio flow diagram
Headset
Tender 1
Internal Speaker
Tender
Panel Mic
Can hear selection:
Diver2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver
+
-
Volume Diver 1
to Tender
+
-
Volume
Tender
Can hear selection:
Diver 1,2,3,4
Tender 2
Wireless Headset1
Wireless Headset2
Aux in
External speaker
+
-
Volume Ext.
Speaker
Mic Gain
Panel
Headset T1
Mic
Mic Gain HS
Headset
Tender 2
Headset T2
Mic
Mic Gain HS
Mic Gain
Mic
Head
Diver 1
Aux Gain
DSP
mixer /
Filter
Can hear selection:
Diver 1,2,3,4
Tender 1
Wireless Headset1
Wireless Headset2
Aux in
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Isolator
Isolator
Isolator
DVR Gain
Isolator
Rec1
Volume
Isolator
Can hear selection:
Diver1,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver
Mic Gain
Mic
Head
Diver 2
Isolator
Isolator
Can hear selection:
Diver1,2,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver
Mic Gain
Mic
Head
Diver 3
Isolator
Isolator
Can hear selection:
Diver1,2,3
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Head gain
+
-
Volume
Tender to Diver
Mic Gain
Mic
Head
Diver 4
Isolator
Isolator
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
BTEXT
BlueTooth add-on for 2x Wireless Headsets
Mic
Wireless Headset1
WH1 Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset2
Aux in
WHS1 Mic Gain
WH2 Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Aux in
WHS2 Mic Gain
Mic
Wireless Headset2
+
-
Volume Diver 2
to Tender
+
-
Volume Diver 3
to Tender
+
-
Volume Diver 4
to Tender
3/4CH Diver Intercomm
also has the option of
adding two extra
Wireless Headsets
3
4
Rec2
Volume
Isolator Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Aux1
Volume
Isolator
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Rec3
Volume
Isolator Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Rec4
Volume
Isolator Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Aux2
Volume
Isolator
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Aux3
Volume
Isolator
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Aux4
Volume
Isolator
Can hear selection:
Diver 1,2,3,4
Tender 1,2
Wireless Headset1
Wireless Headset2
Aux in
Aux In
DVR In
15 watt
AUX4 out
AUX3 out
AUX2 out
AUX1 out
Rec4 out
Audio4 out
Rec3 out
Audio3 out
Rec2 out
Audio2 out
Rec1 out
Audio1 out
7 watt
15 watt
7 watt
7 watt
7 watt

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Controls
The xDR has standard controls which will be familiar to you using any other Diver Intercom. Each Diver has a Tender and
Diver Volume potentiometer knob and a PTT switch. There is also a PTT All push button, to speak to all Divers at once.
There is a general rotary switch which has as default selection the function of increasing and decreasing the Tender audio
Volume heard at the internal speaker and connected headset. There is an on/off switch for the internal speaker.
Function
Description
Rotary Switch
This switch has a rotation and push function. It is used to enter and scroll through the
Menu items. By default the switch is used to increase/decrease the value of the selected
startup function. By default the startup function is the Volume Tender.
Menu Display
This a 2 line, 16 character display showing the selected menu functions. The display is a
transflective LCD display with a back ground light. It can be used outdoor in full sunlight.
The contrast and background display light can be adjusted in the menu.
Diver Volume control
Each diver has 2 rotary potentiometer’s for adjusting the Tender to Diver volume and
Diver to Tender volume
•Volume Tender to Diver:
This is the volume of the Diver earphone speakers when the Tender speaks to
the Diver.
•Volume Diver to Tender:
This is Volume of the Diver Microphone speaking to the Tender
Panel Mic
On the panel between the Diver controls, the internal MIC is positioned. It is not needed
to place your mouth close to the Mic. Normal arm length distance is sufficient to pick-up
the Tender speaking volume.
PTT (Push-to-Talk)
Press the PTT to speak to the diver (only in HD mode), or PTT All to speak to all divers
at once.
Speaker
This a switch to switch the internal speaker On or Off the internal speaker. Depending on
the system this can be a rocker switch or a push latching switch.
Rotary
switch
Menu
Display
Diver
Volume
control
PTT
Buttons
Panel
Mic
Speaker
switch

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xDR-DSP –Diver Intercom Manual
Build 39 Date: 30-08-2021
Audio Connections
The xDR has audio in- and output connections, these can vary with each system. The most common connections are
shown below:
Below is a list of al the connections that are possible on a system:
Audio
connections
Description
Connector
Audio Out 1
Rec Out 1
Audio out 1 and Rec out 1 have both the same selection of you want to hear on
these outputs and the same internal gain setting. Audio Out is standard isolated.
REC out is both isolated to the recorder as well if it is an output. By default Diver 1 &
Tender are selected to output
RCA
(Cinch)
(Phono)
Audio Out 2
Rec Out 2
Audio out 2 and Rec out 2 have both the same selection of you want to hear on
these outputs and the same internal gain setting. Audio Out is standard isolated.
REC out is both isolated to the recorder as well if it is an output. By default Diver 2
& Tender are selected to output
Aux Out 1
Aux Out 2
Aux Out 1 & 2 have each their own selection of to hear and both have their own
internal gain setting. Both outputs are isolated. By default Diver 1&2, Tender and
Aux are selected to output.
Aux In
Aux in can be used to input an audio source from any device, like a MP3 player or
Smartphone. This audio source can be selected in the Menu to hear at any output.
This means for example, that you can selected at the Diver can hear, and the diver
can hear music. If the Tender talks to the diver, the aux (music in this example) will
be muted.
Jack 3,5 mm
(mono/stereo)
DVR In
DRV In is an audio input which can be used to connect to a DVR or other output.
The sound of this output will be heard on the Internal speaker of the xDR radio. This
input will be internally used in all Novasub systems with a built in DVR recorder.
This input is isolated and has an internal gain setting.
RCA
(Cinch)
(Phono)
Headphone
Headphone connection of a standard headphone used with PC’s or other devices.
The volume control of the headphone is in parallel with the Internal speaker volume.
This is the Vol. Tender on the menu display, using the rotary switch
Jack 3,5 mm
(mono/stereo)
Microphone
Microphone input of a headset or other Mic input which is an Electret Microphone.
This input has an internal gain setting. When a microphone is plugged it, it is
detected and this switches automatically from the internal panel Mic.
Jack 3,5 mm
(mono)
Mic/Headset
This is a Novasub configured multipin connection used for a Table Microphone with
PTT buttons, hand held Mic with PTT button or rugged Mic/Headsets with PTT
button.
Bulgin
PX0412/08S
or Lumberg
0271-07
Note that when there is a microphone connected to either the multipin or the jack then the panel microphone
is disabled.
Audio Out
Cinch/RCA
connector
Aux Out
Cinch/RCA
connector
Headphone
Jack 3,5 mm
connector
Aux In
Jack 3,5 mm
connector
Microphone
Jack 3,5 mm
connector
Mic/headset with PTT
Bulging PX04 /
Lumberg connector