RFspace NetSDR Manual de usuario descargar pdf (Pagina 20)

4.2.7 RF Filter Selection

Purpose: Controls the Analog RF Filter selection.

Control Item Code: 0x0044

Control Item Parameter Format:

The first parameter is a 1 byte channel ID.

Selects which channel to set or set all the same RF Filter(0xFF)

Channel 1 ID == 0x00

Channel 2 ID == 0x02

Parameter 2 is a 1 byte value whose range is (0 to 13).

0 = Automatically select filter based on NCO frequency.

1 = Select 0 to 1.8 MHz Filter

2 = Select 1.8 to 2.8 MHz Filter

3 = Select 2.8 to 4.0 MHz Filter

4 = Select 4.0 to 5.5 MHz Filter

5 = Select 5.5 to 7.0 MHz Filter

6 = Select 7 to 10 MHz Filter

7 = Select 10 to 14 MHz Filter

8 = Select 14 to 20 MHz Filter

9 = Select 20 to 28 MHz Filter

10 = Select 28 to 35 MHz Filter

11 = Bypass Filters

12 = Nopass Filter (High Attenuation on all frequencies for RF mute)

13 = Manual DownConverter Path

(14-255) not defined

Example, to select the 5.5 to 7MHz filter on channel 1:

The host sends this:

[06][00] [44][00] [00] [05]

The Target responds with:

[06][00] [44][00] [00] [05]

4.2.8 A/D Modes

Purpose: Controls various A/D Modes.

Control Item Code: 0x008A

Control Item Parameter Format:

The first parameter is a 1 byte channel ID.

Selects which channel to set or set all the same(0xFF)

Channel 1 ID == 0x00

Channel 2 ID == 0x02

Parameter 2 is a 1 byte value whose bits are defined as follows:

Bit 0 --- 1 = Dither on 0 = Dither off

Bit 1 --- 1 = A/D gain 1.5 0 = A/D gain 1.0

Example, to set the channel 1 A/D mode to dither on and A/D gain 1.5:

The host sends this:

[06][00] [8A][00] [00] [03]

The Target responds with:

[06][00] [8A][00] [00] [03]

Rev. 1.03 2011-11-01

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RFspace NetSDR Manual de usuario Pagina 20

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