Shure P4800 - Output Pad (-20 Db); Volume Control

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Output Pad (-20 dB)
Toggle pad
Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 5Eh 00h F7h
Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 5Fh 00h F7h
Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 60h 00h F7h
Output 4: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 61h 00h F7h
Output 5: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 62h 00h F7h
Output 6: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 63h 00h F7h
Output 7: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 64h 00h F7h
Output 8: F0h 00h 01h 00h <Device ID> 0Ah 69h 06h 03h 65h 00h F7h
Force pad off
Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 5Eh 00h F7h
Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 5Fh 00h F7h
Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 60h 00h F7h
Output 4: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 61h 00h F7h
Output 5: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 62h 00h F7h
Output 6: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 63h 00h F7h
Output 7: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 64h 00h F7h
Output 8: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 65h 00h F7h
Force pad on
Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 5Eh 7Fh F7h
Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 5Fh 7Fh F7h
Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 60h 7Fh F7h
Output 4: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 61h 7Fh F7h
Output 5: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 62h 7Fh F7h
Output 6: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 63h 7Fh F7h
Output 7: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 64h 7Fh F7h
Output 8: F0h 00h 01h 00h <Device ID> 0Ah 69h 01h 03h 65h 7Fh F7h
Volume Control
Set volume to a specific value
Output 1: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 3Eh <VA> F7h
Output 2: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 3Fh <VA> F7h
Output 3: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 40h <VA> F7h
Output 4: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 41h <VA> F7h
Output 5: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 42h <VA> F7h
Output 6: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 43h <VA> F7h
Output 7: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 44h <VA> F7h
Output 8: F0h 00h 01h 00h <Device ID> 0Ah 69h 00h 03h 45h <VA> F7h
where, <VA> = [ 2 * (Control Setting) ] & 7Fh
i.e., multiply the control setting by 2 and then logically AND that product with 7Fh.
The valid range for “Control Setting” is (-30) to (30). Each integer increase (or decrease) in the Control Setting is
equal to 1 dB change.