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Table 5-56 dacsel – dac selection parameters – Bird Technologies BDS-Manual User Manual

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Table 5-56 DACSel – DAC Selection Parameters

Note: Structure size = 6 bytes.

Name

Data Type

Description

Byte

Fund Number

USINT

The fundamental frequency index. This will also be
used as the “F1” frequency for intermods. One of
the following values (ranging 0-5):
0 – No fundamental selected (and no DAC output
selected).
1 – 5 – The selected fundamental.
Default: 0

0

F2 Fund

USINT

The frequency number of the “F2” frequency to use
when computing intermodulation products. One of
the following values (0-5):
0 – No intermods requested.
1 – 5 – Fundamental frequency to use at the F2
fundamental.
Default: 0

1

Harmonic

USINT

Harmonic index value to send out the DAC. This is
ignored if an intermod is selected (with Intermod).
One of the following values (0-15):
0 – The fundamental.
1 – The first harmonic.

15 – The fifteenth harmonic.
Default: 0

2

Intermod

SINT

Intermodulation product to send out the DAC.
One of the following values:
-3 – 3

rd

“minus” intermod.

-2 – 2

nd

“minus” intermod.

-1 – 1

st

“minus” intermod.

0 – No intermod selected.
1 – 1

st

“plus” intermod.

2 – 2

nd

“plus” intermod.

3 – 3

rd

“plus” intermod.

Default: 0

3

Units

USINT

Output units. See Output Units for a list of values.
Default: 0 (Vrms)

4

DAC Output

USINT

DAC output selection. The DAC to send the signal
out of. One of the following values (0-5):
0 – Invalid – no DAC selected.
1 – 5 The DAC to use as the output.
Default: 0

5