16.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not rotate the AMS knob.

(Traverse Waveform)

A

VC

B

Specified value : Below 10% offset value

Offset value (%) = IA – BI X 100 2 (A + B)

17.Press the YES button and display “EF CD CHECK”.

18.Press the A button and remove the check disc (MD) TDYS-1.

Note 1 : MO reading data will be erased during if a recorded disc is used in this adjustment.

Note 2 : If the traverse waveform is not clear, connect the oscillo- scope as shown in the following figure so that it can be seen more clearly.

Oscilloscope

BD board

330 kΩ

CN105 pin 4 (TE)

10pF

CN105 pin 6

(VC)

 

5-6-7. Focus Bias Check

Change the focus bias and check the focus tolerance amount.

Checking Procedure :

1.Load a continuously recorded test disc (MDW-74/GA-1). (Refer to “5-5. Using the Continuously Recorded Disc”.)

2.Rotate the AMS knob and display “CPLAY1 MODE”.

3.Press the YES button and display “CPLAY1 MID”.

4. Press the

MENU/NO

button when “C =

AD = ” is

displayed.

 

5.Rotate the AMS knob and display “FBIAS CHECK”.

6.Press the YES button and display “ / c = ”.

The first four digits indicate the C1 error rate, the two digits after [/] indicate ADER, and the 2 digits after [c =] indicate the focus bias value.

Check that the C1 error is below 20 and ADER is below 2.

7.Press the YES button and display “ / b = ”. Check that the C1 error is below 100 and ADER is below 2.

8.Press the YES button and display “ / a = ”. Check that the C1 error is below 100 and ADER is below 2.

9.Press the MENU/NO button, next press the A button, and remove the test disc.

5-6-8. C PLAY Check

MO Error Rate Check

Checking Procedure :

1.Load a continuously recorded test disc (MDW-74/GA-1). (Refer to “5-5. Using the Continuously Recorded Disc”.)

2.Rotate the AMS knob and display “CPLAY1 MODE”.

3.Press the YES button and display “CPLAY1 MID”.

4.The display changes to “C1 = AD = ”.

5.If the C1 error rate is below 20, check that ADER is 00.

6.Press the MENU/NO button, stop playback, press the A but- ton, and test disc.

CD Error Rate Check

Checking Procedure :

1.Load a check disc (MD) TDYS-1.

2.Rotate the AMS knob and display “CPLAY1 MODE”.

3.Press the YES button twice and display “CPLAY1 MID”.

4.The display changes to “C1 = AD = ”.

5.Check that the C1 error rate is below 20.

6.Press the MENU/NO button, stop playback, press the A but- ton, and the test disc.

5-6-9. Self-Recording/playback Check

Prepare a continuous recording disc using the unit to be repaired and check the error rate.

Checking Procedure :

1.Insert a recordable test disc (MDW-74/GA-1) into the unit.

2.Rotate the AMS knob to display “CREC1 MODE”.

3.Press the YES button to display the “CREC1 MID”.

4.When recording starts, “ REC ” is displayed, this becomes “CREC (@@@@)” (@@@@ is the address), and recording starts.

5.About 1 minute later, press the MENU/NO button to stop continuous recording.

6.Rotate the AMS knob to display “C PLAY1 MODE”.

7.Press the YES button to display “C PLAY1 MID”.

8.“C1 = AD = ” will be displayed.

9.Check that the C1 error becomes below 20 and the AD error below 2.

10.Press the MENU/NO button to stop playback, and press the A button and remove the disc.

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Sony NEW, MDM-7A Focus Bias Check, Play Check MO Error Rate Check, CD Error Rate Check, Self-Recording/playback Check
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KMS-2608/J1N, MDM-7A, NEW specifications

Sony has long been a leader in the realm of electronic innovation, and the introduction of the NEW MDM-7A and KMS-2608/J1N models further solidifies this position. These devices are a testament to Sony's commitment to delivering cutting-edge technology that enhances user experience across various applications.

The MDM-7A, a multi-channel digital mixer, offers advanced audio processing capabilities, ideal for both studio and live sound environments. One of its standout features is its high-resolution 24-bit audio processing, which ensures crystal-clear sound reproduction and fidelity. The MDM-7A supports a wide range of audio formats, making it compatible with various production environments. Moreover, its intuitive user interface facilitates easy navigation and control over numerous audio channels while maintaining flexibility for complex setups.

On the other hand, the KMS-2608/J1N is a multichannel audio management system designed for more extensive sound setups. One of its primary features is the smart signal routing capability, which allows users to manage audio signals efficiently across different outputs. This is especially beneficial in large-scale events or installations where sound management can become challenging. With support for both analog and digital audio inputs, the KMS-2608/J1N caters to a variety of equipment, ensuring seamless integration with existing systems.

In terms of connectivity, both devices are equipped with multiple input and output options, including XLR and TRS connectors, along with digital interfaces such as AES/EBU and S/PDIF. This flexibility allows users to customize their audio setups according to specific needs and preferences.

Another defining characteristic of the MDM-7A and KMS-2608/J1N is their durability and reliability. Built with robust materials and designed for extensive use, these devices are engineered to withstand the rigors of professional use, making them a smart investment for audio professionals.

In conclusion, the Sony MDM-7A and KMS-2608/J1N embody the future of audio technology, combining superior sound performance with user-friendly features. These models are not only designed to meet current industry standards but are also forward-thinking, making them suitable for a wide array of applications, from studio recordings to live events. As Sony continues to innovate, these devices are sure to play a significant role in shaping the audio landscape for years to come.
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