•TRIM (10th byte)

This command is used to set the reference level [dBu] of the input terminals.

 

REF LEVEL

 

Mic level input

 

Line level input

 

 

 

 

 

-60

 

-10

30[H] (‘0’)

 

 

 

 

-59

 

-9

31[H] (‘1’)

-58

 

-8

32[H] (‘2’)

 

 

 

 

-57

 

-7

33[H] (‘3’)

 

 

 

 

-56

 

-6

34[H] (‘4’)

 

 

 

 

-55

 

-5

35[H] (‘5’)

 

 

 

 

-54

 

-4

36[H] (‘6’)

 

 

 

 

-53

 

-3

37[H] (‘7’)

 

 

 

 

-52

 

-2

38[H] (‘8’)

 

 

 

 

-51

 

-1

39[H] (‘9’)

 

 

 

 

-50

 

0

3A[H] (‘:’)

-49

 

+1

3B[H] (‘;’)

 

 

 

 

-48

 

+2

3C[H] (‘<’)

 

 

 

 

-47

 

+3

3D[H] (‘=’)

-46

 

+4

3E[H] (‘>’)

 

 

 

 

-45

 

+5

3F[H] (‘?’)

 

 

 

 

•Function ON/OFF (11th byte)

This command is used to turn ON/OFF the parametric equalizer (PEQ), feedback reducer (FR) and low-cut filter (LCF) with the 8-bit data.

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

0

1

0

0

0

PEQ

FR

LCF

When you want to turn ON PEQ, FR and LCF, set the corresponding bit to 1. When you want to turn them OFF, set the corresponding bit to 0.

Bit-3 to bit-7 are fixed all the time.

•FR frequency (24, 27, 30, 33 and 36th bytes), FR gain (26, 29, 32, 35 and 38th bytes)

This command is used to set the center frequency and the gain of the notch filter used for the feedback reducer. Method of setting is the same as the of the PEQ frequency and PEQ gain. See pages 33 and 34.

•Compressor (39th byte)

This command is used to set the compressor.

COMPRESSOR

OFF

30[H] (‘0’)

 

 

SOFT

31[H] (‘1’)

 

 

MID

32[H] (‘2’)

 

 

HARD

33[H] (‘3’)

 

 

– 43 –

Page 42 Page 44
Page 43
Image 43
Sony RS-232C manual Compressor 39th byte, Compressor OFF, Soft, Mid, Hard
Page 42 Page 44

RS-232C specifications

The Sony RS-232C is a renowned communication standard that has been widely utilized in various electronic devices, enabling serial communication between computers and peripheral devices. This protocol is integral in various applications, including industrial automation, medical equipment, and consumer electronics.

One of the main features of the Sony RS-232C is its simplicity and ease of use. The standard utilizes a basic serial communication method, allowing for asynchronous data transmission. This means that data can be sent one bit at a time over a single channel, ensuring reliable communication over short distances, typically up to 50 feet, although longer distances can be achieved with proper cable management and signal boosters.

The technology behind the RS-232C standard employs voltage levels to represent binary data. Logic level zero is represented by a voltage between -3 to -25 volts, while logic level one is between +3 to +25 volts. This voltage differential is crucial for distinguishing between 'on' and 'off' states in electronic signaling. The standard supports data rates of up to 115.2 kbps, making it suitable for various applications, although it is generally limited in speed when compared to modern communication standards like USB or Ethernet.

In terms of characteristics, the Sony RS-232C supports both full-duplex and half-duplex communication, allowing for simultaneous transmission and reception of data, or one-directional data transfer, respectively. The protocol also includes control signals for flow control, such as RTS (Request to Send) and CTS (Clear to Send), which help manage data transmission and prevent data loss due to buffer overflow.

The RS-232C standard has 25-pin and 9-pin connector configurations, although many devices now utilize the more compact 9-pin DIN format. This legacy standard remains prevalent in industrial settings, as many devices still use RS-232 connections.

Despite the emergence of more advanced communication protocols, the reliability and robustness of the Sony RS-232C ensure that it remains an enduring choice for numerous applications. Its straightforward configuration, coupled with extensive documentation and support, makes it a favorable option for both new installations and the maintenance of legacy systems in various industries. As technology continues to evolve, the RS-232C standard remains a testament to the enduring principles of reliable communication.
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