Appsys ProAudio multiverter SRC-64 User manual

SRC-64
Asynchronous Sample Rate Converter
Add-on Module for MVR-64
User's Manual
multiverter

User's Manual
Table of Contents
1. ENERAL.....................................................................................................................................3
1.1. Features................................................................................................................................3
1.2. Box Contents........................................................................................................................4
1.3. Conventions used in this manual......................................................................................4
2. INSTALLATION...........................................................................................................................5
2.1. Multiverter Firmware Check...............................................................................................5
2.2. Hardware Installation.........................................................................................................6
3. OPERATION.................................................................................................................................8
3.1. eneral.................................................................................................................................8
3.2. Select the async input........................................................................................................8
3.3. Select the async output......................................................................................................9
3.4. Select the async clock source..........................................................................................10
3.5. ASRC Status Display.........................................................................................................10
4. CONFI URATION EXAMPLES................................................................................................12
4.1. Typical Setups....................................................................................................................12
5. MAINTENANCE........................................................................................................................14
5.1. ASRC selftest......................................................................................................................14
5.2. Determining ASRC Firmware/Hardware version...........................................................14
5.3. ASRC Firmware Upgrade.................................................................................................14
6. SPECIFICATIONS......................................................................................................................16
7. APPENDIX..................................................................................................................................17
7.1. Warranty..............................................................................................................................17
7.2. Manufacturer contact........................................................................................................17
7.3. Recycling............................................................................................................................17
7.4. Document Revision History..............................................................................................17
7.5. About this document.........................................................................................................17
2

SRC-64
1. GENERAL
1.1. Features
The SRC-64 add-on module adds the capability of asynchronous sample rate
conversion to your multiverter. Designed as internal add-on module, it leaves the
"Extension" port available to other break-out boxes.
(Note: The module is called "ASRC" in this manual for clarity).
It features highest analog performance (THD+N -134dB typ.) , 64-channel, bi-
directional conversion between any interfaces supported by the multiverter plus a
number of special modes for maximum flexibility.
The ASRC can be assigned to any input interface and also any output of the
multiverter, giving a true bi-directional conversion between both clock domains:
The ASRC is inserted (by software) between the selected input and the rest of
the multiverter. The input can run independently, and the ASRC takes care of
matching the data to the main clock of the multiverter.
For the output, the ASRC can be inserted between the main clock of the
multiverter and the selected output. The data is then converted to match the
ASRC's asynchronous clock ("async clock") and sample rate before it is sent out.
Existing multiverter routing capabilities are fully preserved.
3

User's Manual
Special modes allow the use of two MADI or AES50 ports together, to send and
receive all 64 channels at 96 kHz (48ch for AES50). Conversions between MADI
64ch@96k => MADI 64ch@48k or vice versa - using two MADI ports for the 96k
part and one for the 48k part - are also supported.
1.2. Box Contents
1 SRC-64 PCB Module
2 Screws M3x20 T10
2 Spacers
This manual
1.3. Conventions used in this anual
A button on the front of the device is shown like this: Set
The encoder can be pushed. This is shown as OK
A particular LED on the front of the device is shown like this: ☼ WCLK
Text indicated on the seven-segment display is shown as 02
A section marked with a warning sign mark tells you that the
information is particularly important to avoid damage or
malfunction.
Filled circles with an exclamation mark indicates an action that
must
be performed (“Required”)
A section marked with a prohibited sign tells you that the action
indicated is prohibited (“Prohibited”)
A section marked with a “information” icon indicates a useful
tip.
4

SRC-64
2. INSTALLATION
2.1. Multiverter Fir ware Check
The multiverter requires at least fir ware 2.0 for the SRC to
work.
Please check and update if required (see below).
Check the multiverter's firmware version: Press Recall , move to
☼ Function , press OK , move to ☼ 12 , press OK , move to ☼ AD
If the seven-segment display shows 02 or higher, your firmware is already
capable of addressing the ASRC, and you can proceed with the next section (2.2
Hardware Installation).
If 01 is shown, a firmware update is required. Download the firmware update
from our website and follow the instructions in the README.TXT file contained
in the package.
5

User's Manual
2.2. Hardware Installation
CAUTION: To prevent electric shock, re ove all ains power
plugs fro the ultiverter before opening!
ATTENTION: Static Sensitive Devices
Observe Precautions for Handling!
Remove the two screws at the rear of the multiverter's top cover
(Torx T10):
Flip the multiverter to detach the top cover. Disconnect the cover's ground
connection at the base.
6

SRC-64
Remove the indicated two screws from the multiverter's main board:
Place the supplied spacers on top of the holes, and carefully plug the ASRC into
the main board.
Insert the supplied screws through the ASRC holes and the spacers, then fasten
them.
Re-connect the cover's ground connection to the base.
Slide the top cover into the front panel slit, then close the lid and mount the
cover using the two black screws.
7

User's Manual
3. OPERATION
3.1. General
The ASRC is configured and enabled/disabled through the "Clock" menu in a few
simple steps, described below.
The general sequence is:
1) Select the async input
2) Select the async output
3) Select the async clock (the clock source for async input+output)
4) Configure the routing matrix (same as without ASRC)
You can always go back to the previous step by pushing the Back⮌ button.
See chapter "4. Configuration Examples" for typical setups.
3.2. Select the async input
This selects the input interface whose data is received at its own asynchronous
clock and sample rate, and is then converted to the multiverter's main clock and
sample rate.
Push the Set button in the "Clock" menu.
Navigate the cursor to the ☼ ASRC LED and push OK to confirm. The seven-
segment display shows1n to indicate the input selection mode.
You can now select the appropriate input row(s). The example shows how to
select "MADI optical" as asynchronous input:
Note: For some configurations it is possible to select two rows at once. This is
used if you want to concatenate the channels from two inputs to make use of all
8

SRC-64
64 channels at 96kHz (48ch with AES50), or 32ch at 192kHz.
When ready, push OK to confirm.
If you need only asynchronous outputs, select "X" for the
inputs.
This disables the receive part of the ASRC, and all inputs run
now on the main clock.
3.3. Select the async output
This selects the output interface whose data is converted from the multiverter's
main clock/sample rate to the async clock on output.
Some interfaces (AES50, Dante/AES67) do not allow dierent
receive and transmit clocks. When such an interface is selected
as input, the output runs automatically at the same clock and
cannot be chosen separately.
Assign the input as described. When this is finished, the seven-segment display
shows 0u to indicate the output selection mode.
Select the appropriate output column(s). The example shows how to select
"MADI optical" as asynchronous output:
Note: For some configurations it is possible to select two rows at once. This is
used if you want to concatenate two outputs together to make use of all 64
channels at 96kHz (48ch with AES50), or 32ch at 192 kHz.
Selecting "X" disables the ASRC for the output direction.
9

User's Manual
If you need only asynchronous inputs, select "X" for the
outputs. Transmitted data is then output at the multiverter's
main clock/sample rate (no samplerate conversion happens for
transmit data).
If no async input and no async output is selected (both "X"),
the ASRC function is disabled and the ASRC is turned o.
3.4. Select the async clock source
This selects the source for the asynchronous clock (the clock which is used for the
selected async inputs and outputs).
Depending on the async interfaces selected, not all interfaces can be used as
source for the async clock. Usually, it's possible to select a) the async input as
clock source, b) the BNC wordclock input, or c) an internally generated clock.
The seven-segment display shows A5 to indicate the "async" clock selection
mode, and the ☼ASRC LED shows yellow.
Navigate the cursor to the desired clock source and push OK to confirm.
Depending on the clock source, the multiverter may ask you now to choose the
SMUX mode (how single-speed data should be interpreted) or the samplerate (if
you are using an internal clock). Push OK to confirm.
3.5. ASRC Status Display
The status LEDs for "Routing", "Clock" and "Monitor" show yellow instead of green
to indicate that the respective function makes use of the ASRC.
When the ASRC is active, the ☼ ASRC LED is lit.
Yellow color indicates that the selected input clock is valid, while red color
indicates that the input clock is missing or invalid.
The ASRC clock source and samplerate are shown in yellow if the clock is valid,
otherwise in red.
In the routing matrix, connections using the ASRC are displayed yellow (in
contrast to the normal green) when the selected conversion involves the use of
the ASRC. If there is any condition which prevents the data from being
converted (i.e. missing input data or clock) the respective connection is shown
in red.
10

SRC-64
In the "Monitor" section, the selected input is displayed in yellow (in contrast to
the normal green) when the selected input runs through the ASRC.
11

User's Manual
4. CONFIGURATION EXAMPLES
The examples below show typical conversion setups with their configuration of the ASRC
inputs, outputs, possible async clock sources and typical routings.
Although the "Routing" atrix exa ples show only conversions involving
the ASRC, ore conversions can run at the sa e ti e:
An arbitrary number of additional conversions within the main clock
domain can run in parallel.
Any ASRC'ed input can additionally be routed to an arbitrary number of
outputs in the main clock domain.
4.1. Typical Setups
Setup
<=> bidirectional
=> unidirectional
Step 1:
ASRC input
"Which input comes
async and should go
through the ASRC?"
Step 2:
ASRC output
"Which output
should run at the
ASRC samplerate?"
Step 3:
ASRC clock source
"From where should
the ASRC take its
clock?"
Step 4:
Routing
"Which input should
go to which output?"
You can add
additional routings
as required!
AES50 48ch/96kHz
<=>
Dante 48ch/48kHz
Use "MT" port in
AES50 mode, see
multiverter Manual
AD MO MC MT AE DA EX
AD
MO
MC
MT O O O O O O O
AE O O O O O O O
DA
EX
AD MO MC MT AE DA EX
AD O O
MO O O
MC O O
MT O O
AE O O
DA O O
EX O O
AE
MT
WCLK
INT
AD MO MC MT AE DA EX
AD
MO
MC
MT O
AE O
DA O O
EX
MADI optical
32ch/96kHz
<=>
Dante 32ch/48kHz
AD MO MC MT AE DA EX
AD
MO O O O O O O O
MC
MT
AE
DA
EX
AD MO MC MT AE DA EX
AD O
MO O
MC O
MT O
AE O
DA O
EX O
MO
WCLK
INT
AD MO MC MT AE DA EX
AD
MO O
MC
MT
AE
DA O
EX
MADI optical+
MADI coaxial
64ch/96kHz
<=>
Dante 64ch/48kHz
AD MO MC MT AE DA EX
AD
MO O O O O O O O
MC O O O O O O O
MT
AE
DA
EX
AD MO MC MT AE DA EX
AD O O
MO O O
MC O O
MT O O
AE O O
DA O O
EX O O
MO
MC
WCLK
INT
AD MO MC MT AE DA EX
AD
MO O
MC O
MT
AE
DA O O
EX
12

SRC-64
MADI optical+
MADI coaxial
64ch/96kHz
=>
MADI optical
64ch/48kHz
AD MO MC MT AE DA EX
AD
MO O O O O O O O
MC O O O O O O O
MT
AE
DA
EX
AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
MO
MC
WCLK
INT
AD MO MC MT AE DA EX
AD
MO O
MC O
MT
AE
DA
EX
MADI optical
64ch/48kHz
=>
MADI optical+
MADI coaxial
64ch/96kHz
AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
AD MO MC MT AE DA EX
AD O O
MO O O
MC O O
MT O O
AE O O
DA O O
EX O O
MO
WCLK
INT
AD MO MC MT AE DA EX
AD
MO O O
MC
MT
AE
DA
EX
MADI optical
at any sa plerate
=>
anything else*
at ain sa plerate
*) All outputs shown
AD MO MC MT AE DA EX
AD
MO O O O O O O O
MC
MT
AE
DA
EX
AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
MO
WCLK
AD MO MC MT AE DA EX
AD
MO O O O O O O O
MC
MT
AE
DA
EX
Any input*
at ain sa plerate
=>
Dante
48kHz
*) ADAT shown
AD MO MC MT AE DA EX
AD
MO
MC
MT
AE
DA O O O O O O O
EX
AD MO MC MT AE DA EX
AD O
MO O
MC O
MT O
AE O
DA O
EX O
DA
INT
AD MO MC MT AE DA EX
AD O
MO
MC
MT
AE
DA
EX
Any input*
at ain sa plerate
=>
MADI optical
48kHz
*) ADAT shown
AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
AD MO MC MT AE DA EX
AD O
MO O
MC O
MT O
AE O
DA O
EX O
WCLK
INT
AD MO MC MT AE DA EX
AD O
MO
MC
MT
AE
DA
EX
ASRC disabled AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
AD MO MC MT AE DA EX
AD
MO O O
MC O O
MT O
AE O O
DA O O
EX
any any
13

User's Manual
5. MAINTENANCE
5.1. ASRC selftest
If there is any doubt on the correct operation of the ASRC, it can easily be checked
by running the ASRC selftest. The selftest works by passing an internally generated
sine wave forward and back through the ASRC (running two conversions, from
96kHz => 88.2kHz => 96kHz) on all 64 channels.
To enter ASRC selftest mode: Press Recall , move to ☼ Function , move to
☼ 11 , press OK , turn the encoder until the seven-segment display shows 03
("ASRC selftest") and press OK .
The resulting data is output on the headphones where it can be verified by
listening to it. The ASRC works correctly if a clean, non-distorted 1000Hz sine
tone can be heard on all channels.
Use ☼ Ch to listen to the appropriate channel. The output volume can be
adjusted using ☼ Vol.
The resulting data is also output on MADI optical (channels 1-32) and MADI
coaxial (channels 33-64) as two 96kHz/32ch streams, clocked by the internal
clock of the multiverter. You can use any signal meter to check the result; the
output level should be -20dB on all channels.
To exit ASRC selftest mode, press the Back⮌ button.
5.2. Deter ining ASRC Fir ware/Hardware version
To check the firmware and hardware version of the ASRC module:
Press Recall , move to ☼ Function , press OK , move to ☼ 12 , press OK
Move the cursor to
- ☼ EX to show the ASRC Firmware Major Version number
- ☼ Ch to show the ASRC Firmware Minor Version number
- ☼ Vol to show the ASRC Hardware Version
in the seven-segment display.
5.3. ASRC Fir ware Upgrade
Although seldom required, the ASRC firmware itself can be upgraded.
This is done similar to the multiverter upgrade, with the dierence that the USB
plug has to be connected directly to the ASRC (not on the multiverter).
14

SRC-64
RISK OF ELECTRIC SHOCK:
It is strongly advised to power the Multiverter from the DC
source
(9..24V) during upgrade.
When powering via AC mains, it is possible to touch live parts
inside during the upgrade! Only qualified personnel should do
this, obeying the safety rules when working with live mains
voltage.
The ASRC module must be mounted within the multiverter during update (the
multiverter supplies power to it).
The cover of the multiverter must remain open throughout the upgrade process
to allow plugging of the USB cable into the ASRC's USB jack.
Follow the instructions in the README.TXT file of the firmware update.
15

User's Manual
6. SPECIFICATIONS
Para eter Value
Dimensions 115x94x27mm (BxHxD)
Weight 65 g
Operating
temperature
0..+70°C, non-condensing
Storage temperature -40..+85°C, non-condensing
Power consumption 7W max.
Channel count Up to 64 per direction in x1 modes (44.1 / 48 kHz)
Up to 64 per interface in x2 modes (88.2 / 96 kHz)
Up to 32 per interface in x4 modes (176.4 / 192 kHz)
Sample rates Arbitrary sample rates between 32kHz and 192kHz
Analog performance THD+N: -133 dB typ. / -120dB max.
Dynamic range (A-weighted, 20 Hz to 20 kHz): 139 dB
Latency For up-sa pling conversions: t/s = 16/fs_in + 32/fs_in
fs_in / kHz t / s
44.1 1.09
48 1.03
88.2 0.54
96 0.5
176.2 0.27
For down-sa pling conversions: t/s = 16/fs_in + (32/fs_in)*(fs_in/fs_out)
fs_in /
kHz
fs_out /
kHz
t / s fs_in /
kHz
fs_out /
kHz
t / s
48 44.1 1.06 176.4 44.1 0.82
88.2 44.1 0.91 48 0.76
48 0.84 88.2 0.45
96 44.1 0.89 96 0.42
48 0.83 192 44.1 0.81
88.2 0.53 48 0.75
88.2 0.45
96 0.42
176.4 0.26
16

SRC-64
7. APPENDIX
7.1. Warranty
We oer a full two (2) year warranty from the date of purchase. Within this period,
we repair or exchange your device free of charge in case of any defect*. If you
experience any problems, please contact us first. We try hard to solve your
problem as soon as possible, even after the warranty period.
* Not covered by the warranty are any damages resulting out of improper use,
willful damage, normal wear-out (especially of the connectors) or connection with
incompatible devices.
7.2. Manufacturer contact
Appsys ProAudio
Rolf Eichenseher
Bullingerstr. 63 / BK241
CH-8004 Zürich
Switzerland
www.appsys.ch
[email protected]h
Phone: [phone]
Mobile: [phone]
7.3. Recycling
According to EU directive 2002/96/EU, electronic devices with a
crossed-out dustbin may not be disposed into normal domestic
waste.
Please return the products back for environment-friendly
recycling, we'll refund you the shipping fees.
7.4. Docu ent Revision History
2: Layout improved
1: Initial release
7.5. About this docu ent
All trademarks mentioned in this document are property of the respective owners.
All information provided here is subject to change without prior notice.
Document Revision: 2 · 2018-09-04
Copyright © 2017-2018 Appsys ProAudio · Printed in Switzerland
17