Rohde & Schwarz EX-IQ-BOX, Руководство пользователя

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Remote Control Commands
R&S
®
EX-IQ-BOX
347 User Manual 1409.5570.32 ─ 05
I
1
Q
1
I
2
Q
2
I
0
Q
0
I
3
Q
3
I
4
Q
4
I
5
Q
5
I
6
Q
6
I
7
Q
7
I
8
Q
8
I
9
Q
9
Common
exponent
Q mantissa
I mantissa
Fig. 9-7: 2's complement 9E2
The I and Q samples of the 2's complement 9E2 are calculated with the formulas:
I sample 10 bits = 9 bits ma 1 bit, i.e. bit_0 exponent
 
0 0
2
9
8
7
0
1
2 2 2
I Q
i
i
i
I I I
 











 








 

Q sample 10 bits: 9 bits Q ma 1 bit, i.e. bit_1 exponent
 
0 0
2
9
8
7
0
1
2 2 2
I Q
i
i
i
Q Q Q
 











 








 

Parameters:
<Nformat> COMPlement | C9E2 | BOFFset
COMPlement
Formats the signal in two's-complement.
The most significant bit has a value of -2
n-1
, the bits of lesser sig-
nificance follow as:
+2
n-2
...+2
0
C9E2
Formats the signal in two's-complement variant 9E2.
BOFFset
Formats the signal in binary offset.
Adds a binary offset of -2
n-1
such that the final values are always
positive.
Example
Adds a binary offset of -2 n-1 such that the final values are always
positive.
*RST:
COMPlement
Example: SOUR1:EBOX:CPRI:TX:SIGN2:NFOR COMP
set the numeric format of the second signal to 2's complement 2.
Manual operation: See "Numeric format" on page 177
CPRI Remote Control Commands