Datum Systems PSM-500L Manual do Utilizador descarregar pdf (Página 19)

Datum Systems, Inc. PSM-500 Modem Remote Control Protocol

Rev 0.93 12/12/10

B-19

Unit Ref, Command [05h]

Read Change Flags

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Byte 0

Source

Freq.

FineTune

Spare

Byte 1

Spare

Byte 2

Spare

Byte 3

Spare

Unit Ref, Read Flags

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Byte 4

Source

Freq0

Freq1

RefCal

Error

Spare

Byte 5

Spare

Unit Ref, Read Bytes

Bytes 6-7

Reference Fine Tune, Signed 16b, (-128 to +127)

Bytes 8-11

Spare

Unit Ref, Write Enable Flags

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Byte 0

Source

Freq.

FineTune

Byte 1

Byte 2

Byte 3

Unit Ref, Write Flags

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Byte 4

Source

Freq0

Freq1

Spare

Byte 5

Spare

Unit Ref, Write Bytes

Bytes 6-7

Reference Fine Tune, Signed 16b, (-128 to +127), Approximately 0.1 PPM per Step

Bytes 8-11

Spare

[Source] = Reference Source, 1b, 0=Internal, 1=External

[Freq1-Freq0] = Reference Frequency, 2b, 0=1.0MHz, 1=5.0MHz, 2=9.0MHz, 3=10.0MHz

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 56 57

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