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sCLK-EX operating instruction Rev 1.5
Precautions
Please read this instruction carefully before use.
Do not attempt to disassemble or modify the product
Keep the product away from the external shocks or vibrations.
Do not use the damaged or peeled cables.
Do not use the product outdoors.
Product specifications and features are subject to change without notice.
Warranty Information
Free warranty service
In case of the defect is found caused by the design or the production flaw while using the product properly, a manufacturer is responsible for the faulty product and the
free warranty service for 1 year from the date of purchasing.
Even in the warranty service period, malfunction or damage of products caused by the inevitable incident such as a natural disaster is not subject of the free warranty
service.
Warranty service at a cost
The product that free warranty service period is expired.
Malfunction of the product caused by a user’s fault.
Malfunction of the product caused by incidents.
Malfunction of the product caused by a natural disaster such as earthquake, flood, lightning and etc.
In case of the warranty service at a cost, a customer should cover the transportation costs.
Examples of a user’s fault
Fault in case of attempts to disassemble or modify the sCLK-EX.
Fault in case of not following the operating instructions correctly.
Please read this operating instruction and FAQ section on our website carefully before asking for the warranty service.
Supplied contents
A sCLK-EX : The name is changed according to the option and frequency.
A sCLK-EX DC power cable
RF cable and Clock connect PCB : The standard sCLK-EX supplies a RF cable
and a Clock connect PCB, and will be added extra according to the option.
A U.FL – BNC cable : Supplied when ordering 50Ω Master Clock Option.
A MCX – BNC cable : Supplied when ordering 75Ω Master Clock Option.
A SATA power PCB
A 3.5” bay bracket
A operating instruction
Specification
Internal reference clock
Custom designed ultra low phase noise oscillation circuit
Isolated differential clock signal distribution
Clock output
Isolated clock output : U.FL connector x 4
Supply matching board for connecting target board
Single clock frequency for interface system
sCLK-EX12 : 12MHz
sCLK-EX25 : 25MHz
sCLK-EX48 : 48MHz
sCLK-EX22/24 : 22.5792MHz / 24.576MHz selectable by SEL0 input
sCLK-EX45/29 : 45.1584MHz / 49.152MHz selectable by SEL0 input
Optional other frequency available
Dual independent clock frequency for digital audio system
sCLK-EX1412 : 14.318MHz, 12MHz
sCLK-EX1448 : 14.318MHz, 48MHz
sCLK-EX1425 : 14.318MHz, 25MHz
Optional other frequency available or selectable by SEL0, 1 input
Triple independent clock frequency for mother board & interface
sCLK-EX142512 : 14.318MHz, 25MHz, 12MHz
sCLK-EX142548 : 14.318MHz, 25MHz, 48MHz
Optional other frequency available or selectable by SEL0, 1 input
Quad independent clock frequency for mother board & interface
sCLK-EX14252612 : 14.318MHz, 25MHz, 26MHz, 12MHz
sCLK-EX14252648 : 14.318MHz, 25MHz, 26MHz, 48MHz
Optional other frequency available or selectable by SEL0, 1 input
Clock control input
Isolated control input connector x 2
Non isolated control input x 7
External master clock input : Optional
Input frequency : 10MHz (Optional other frequency available)
Isolated 50Ω external clock input : U.FL connector x 1
Isolated 75Ω external clock input : MCX connector x 1
Differential clock signal input & internal distribution
Power input
Input Voltage : 9Vdc ~ 12Vdc (optional 6.5Vdc ~ 8.5Vdc)
Operating current : 1A >
Power output
All output use ultra low noise regulator circuit
5V, 0.5A x 1
3.3V, 0.5A x 1
Power regulator circuit
Custom designed ultra low noise regulator circuit x 3
Standard ultra low noise regulator circuit x 1
Active noise canceller circuit
Components
Audio grade film capacitors
Audio grade tantalum capacitors
Operating environment
Operating temperature range: +10 ~ +30 oC
Storage temperature : 0 ~ +40oC
Operating & storage humidity : 10% ~ 90%
Ultimate High Performance Audio
Product outlines
① Power input connector : Connect to +12Vdc or +9Vdc by the supplied DC power
cable.
② Power voltage select jumper : Jumper Off when connecting +12Vdc. Jumper On
when connecting +9Vdc.
③ Constant voltage output connector : Use when another board needs powers.
Output to about 8.6V when connecting +12Vdc, output to around 7.1V when
connecting +9Vdc.
④ Frequency control input connector (SEL0) : Use when the frequency control input
is needed.
⑤ Frequency control input connector (SEL1) : Use when the frequency control input
is needed.
⑥ Clock output 1 (U.FL)
⑦ Clock output 2 (U.FL)
⑧ Clock output 3 (U.FL)
⑨ Clock output 4 (U.FL).
⑩ Master clock input connector (MCX) : 75 Ω connector for a master clock input
⑪ Master clock input connector (U.FL) : 50 Ω connector for a master clock input.
⑫ Frequency control select jumper (SEL2, 3) : To use, special order is required.
⑬ +3.3Vdc output connector: It is the output connector of the internal Ultra Low
Noise Regulator. Use when needs +3.3Vdc from another board.
⑭ +5Vdc output connector: It is the output connector of the internal Ultra Low
Noise Regulator. Use when needs +5Vdc from another board.
⑮ Clock connect PCB : Install to the other boards which needed to replace the
clock and connect by the supplied RF cable.
sCLK-EX ordering information
① A frequency for Clock output 1 (U.FL)
② A frequency for Clock output 2 (U.FL)
③ A frequency for Clock output 3 (U.FL)
④ A frequency for Clock output 4 (U.FL)
⑤ When adding 50Ω Master clock
⑥ When adding 75Ω Master clock
Precautions
On the back side of the sCLK-EX, each clock output frequency is labeling by the sticker. When connecting RF cable to other
boards, be careful not to misconnect the frequency.
The sticker on the back side of the sCLK-EX shouldn’t be torn or damaged because the serial number is essentially needed if
you want to add the master clock options, change the current frequency to the other frequency or enable the additional
clock output to your current sCLK-EX.
⑭ ⑬
⑪
③
⑫
⑩
⑨
⑧ ⑦
⑥ ⑤ ④
① ②
⑮
① ② ③ ④ ⑤ ⑥
sCLK-EX XX XX XX XX M50 75
44.1K : 44.1KHz 48K : 48KHz
5.0 : 5MHz 10 : 10MHz
11 : 11.2896MHz 12 : 12.0MHz
12.2 : 12.288MHz 14 : 14.318MHz
22 : 22.5792MHz 24 : 24.576MHz
25 : 25.0MHz 26 : 26.0MHz
45 : 45.1584MHz 48 : 48MHz
49 : 49.152MHz blank : no frequency output
xx/xx : selectable by SEL0 or SEL1 input
www.sotm-audio.com
sCLK-EX48 + tX-USBexp installation guide
1. Remove the crystal oscillator(Y301) and R328 on tX-USBexp by soldering.
2. Install the supplied clock connect PCB ( ) to the position of the removed Y301 by soldering .
Caution : The above no.1 and 2 processes are required to solder very carefully, otherwise the product would be damaged. If
you are not proficient in soldering or doing these processes, please ask SOtM or the seller to do it. If you purchase the
sCLK-EX48 + tX-USBexp combo package, please skip the above no.1 and 2 processes.
3. Power off the PC and disconnect the AC power cable.
4. Install the sCLK-EX48 using the supplied 3.5”bay bracket to the inside of PC case.
5. Connect the PC’s SATA power cable to the supplied SATA power PCB. And connect it to the sCLK-EX48 by the supplied sCLK-EX DC power cable..
6. By the supplied RF cable, connect the soldered clock connect PCB( ) on the tX-USBexp to the Clock output 1 on the sCLK-EX48.
Caution : If you purchase the sCLK-EX48 + tX-USBexp combo package, connect the RF connector(J301) on the back side of tX-USBexp to the
Clock output 1 on the sCLK-EX48 by the supplied RF cable.
7. Refer to the tX-USBexp instllation guide(manual) and install the tX-USBexp into the PC.
8. Install the tX-USBexp driver and use.
Precautions
I. If there is any damage occurred while sodering the board by yourself, you are responsible for the damage or
malfunction. If you are not proficient in soldering or doing the process, please ask SOtM or the seller.
II. sCLK-EX48 is capable to synchronize an external clock as like 10MHz Master clock if you order the Master clock option.
III. The sticker on the back side of the sCLK-EX shouldn’t be torn or damaged because the serial number is essentially
needed if you want to add the master clock options, change the current frequency to the other frequency or enable the
additional clock output to your current sCLK-EX.
sCLK-EX48
tX-USBexp
RF cable
sCLK-EX DC power cable
SATA power PCB
SATA power cable
www.sotm-audio.com
sCLK-EX12 + tX-USBhubIN installation guide
1. Put 0Ω on R331 and R329. Put 249Ω on R328 and remove R327 on the tX-USBhubIN by soldering.(The resistor is 1608 size.)
Caution : The above no.1 process is required to solder very carefully, otherwise the product would be damaged. If you are
not proficient in soldering or doing this process, please ask SOtM or the seller to do it.
If you purchase the sCLK-EX12 + tX-USBhubIN combo package, please skip this process..
2. Power off the PC and disconnect the AC power cable.
3. Install the sCLK-EX12 using the supplied 3.5”bay bracket to the inside of PC case.
4. Connect the PC’s SATA power cable to the supplied SATA power PCB. And connect it to the sCLK-EX12 by the supplied sCLK-EX DC power cable.
5. By the supplied RF cable, connect the RF connector on tX-USBhubIN to the Clock output 1 on the sCLK-EX12.
6. Refer to the tX-USBhubIN instllation guide(manual) and install the tX-USBhubIN into the PC..
Precautions
I. If there is any damage occurred while sodering the board by yourself, you are responsible for the damage or malfunction. If
you are not proficient in soldering or doing the process, please ask SOtM or the seller.
II. sCLK-EX12 is capable to synchronize an external clock as like 10MHz Master clock if you order the Master clock option.
III. The sticker on the back side of the sCLK-EX shouldn’t be torn or damaged because the serial number is essentially needed if
you want to add the master clock options, change the current frequency to the other frequency or enable the additional clock
output to your current sCLK-EX.
SATA power PCB
SATA power cable
sCLK-EX12
sCLK-EX DC power cable
RF cable
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sCLK-EX142548 + tX-USBexp + PC mainboard installation guide
1. Remove the crystal oscillator(Y301) and R328 on tX-USBexp by soldering.
2. Install the supplied clock connect PCB ( ) to the position of the removed Y301 by soldering.
Caution : The above no.1 and 2 processes are required to solder very carefully, otherwise the product would be damaged. If
you are not proficient in soldering or doing these processes, please ask SOtM or the seller to do it.
3. Power off the PC and disconnect the AC power cable.
4. Open the PC case and take out(disassemble) the main board.
5. Remove the system crystal (oscillator) on the main board and install the supplied clock connect PCB ( ) to the position of the removed system
crystal (oscillator) by soldering.
Caution : Normally the system crystal (oscillator) on the main board is 14.318MHz, but the correct frequency, type of components, required
voltage and other information should be double confirmed by the technical data and the frequency measurement data before you proceed the
installation.
6. Remove the Ethernet communications crystal oscillator on the main board and install the supplied clock connect PCB ( ) to the position of the
removed Ethernet communications crystal oscillator by soldering..
Caution : Normally the Ethernet communications crystal crystal oscillator on the main board is 25MHz, but the correct frequency, type of
components, required voltage and other information should be double confirmed by the technical data and the frequency measurement data
before you proceed the installation.
Cautions : If you purchase the sCLK-EX142548 + tX-USBexp + PC main board combo package, please skip the above
no.1,2,5,6 processes.
7. Install the sCLK-EX142548 using the supplied 3.5”bay bracket to the inside of PC case.
8. Connect the PC’s SATA power cable to the supplied SATA power PCB. And connect it to the sCLK-EX142548 by the supplied sCLK-EX DC power cable.
9. By the supplied RF cable, connect
the clock connect PCB( ) soldered where the system crystal (oscillator) on the main board to the Clock output 1,
the clock connect PCB( ) soldered where the Ethernet communications crystal (oscillator) on the main board to the Clock output 2,
the clock connect PCB( ) soldered where the crystal (oscillator) on the tX-USBexp to the Clock output 3 on the sCLK-EX142548.
Caution : If you purchase the sCLK-EX48 + tX-USBexp combo package, connect the RF connector(J301) on the back side of tX-USBexp to the
Clock output 1 on the sCLK-EX48 by the supplied RF cable
10. Install the main board back to the PC case.
11. Refer to the tX-USBexp instllation guide(manual) and install the tX-USBexp into the PC.
12. Connect AC power cable to PC and Power on.
13. Install the tX-USBexp driver and use.
Precautions
I. The installation guide is based on sCLK-EX142548 + tX-USBexp + PC main board combo package.
II. Advanced technical skill should be required to confirm the correct frequency, type of component, requried voltage and the
specification for the clock upgrade. If you are not proficient in such information or soldering, please ask SOtM or the seller to
do it. Otherwise, we highly recommend using the sCLK-EX combo packages.
III. To confirm the requried voltage for the clock upgrade, you will need to check the technical data of the clock input IC. Normally
the required voltage for the clock signal is 3.3V and the supplied clock connect PCB ( ) is designed to output 3.3V too. But
if the required voltage for the clock input is not 3.3V, you will need to ask SOtM to provide the other voltage of the clock
connect PCB in advance the order.
IV. The above no.5 and 6 processes are required soldering skills, otherwise the product would be damaged. If you are not
proficient in soldering or doing these processes, please ask SOtM or the seller to do it. Otherwise, we recommend using the
sCLK-EX combo package including the main board.
V. Users who conduct the installation is responsible for any damage or malfunction. If there is any damage occurred while
sodering the board by yourself, you are responsible for the damage or malfunction. If you are not proficient in soldering or
doing the process, please ask SOtM or the seller.
VI. sCLK-EX142548 is capable to synchronize an external clock as like 10MHz Master clock if you order the Master clock option.
VII. The sticker on the back side of the sCLK-EX shouldn’t be torn or damaged because the serial number is essentially needed if
you want to add the master clock options, change the current frequency to the other frequency or enable the additional clock
output to your current sCLK-EX.
VIII. If you commission SOtM or the seller do the upgrade on your main board, the labor cost and a round trip shipping cost
should be requried. If any damage is occurred for the requested main board while processing the upgrade, the repair
cost would be charged to SOtM, the seller and the client who requested this upgrade equally, and the repair cost is
calculated depreciation on the requested main board.
tX-USBexp
sCLK-EX142548
sCLK-EX DC power cable
SATA power PCB
SATA power cable
PC Main board
For system clock
For Ethernet clock
RF cable
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sCLK-EX master clock installation guide
1. Refer to the sCLK-EX installation guide and install the sCLK-EX accordingly. Depends on what sCLK-EX package use, the different installation guide is
provided.
2. A U.FL – BNC cable is for 50Ω impedance, a MCX – BNC cable is for 75Ω impedance. Refer to the image below and connect the correct cable
according to the correct impedance of the external master clock input to the sCLK-EX and fasten the BNC connector bracket to the PC case.
3. The Detect LED turns on once the clock output synchronizes to the external master clock input. The Detect LED located next to the Operate LED and
the Operate LED blinks once the sCLK-EX operates normally.
Precautions
I. The installation guide is based on sCLK-EX12M5075 + tX-USBhubIN combo package. Please refer to how to name sCLK-
EX, sCLK-EX12M5075 means enabled 12Mhz frequency for Clock output 1 and add 50Ω Master Clock Option and 75Ω
Master Clock Option.
I. The sCLK-EX master clock option offers
- 50Ω Master Clock Option : it comes with 50Ω U.FL to BNC cable.
- 75Ω Master Clock Option it comes with 75Ω MCX to BNC cable.
II. The standard master clock input frequency is 10MHz. The different input frequency is available, if you need the
different input frequency, you will need to ask in advance of the order.
III. All sCLK-EX is capable to synchronize an external clock as like 10MHz Master clock if you order the Master clock option.
IV. The sticker on the back side of the sCLK-EX shouldn’t be torn or damaged because the serial number is essentially
needed if you want to add the master clock options, change the current frequency to the other frequency or enable the
additional clock output to your current sCLK-EX.
sCLK-EX12
SATA power PCB
SATA power cable
sCLK-EX DC power cable
RF cable
MCX – BNC cable
(75Ω 용)
U.FL – BNC cable
(50Ω 용)
Detect LED
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