IQ Signal Masterâ„¢ MX280005A Vector Signal Analysis Software Help : Basic Operation : Modulation Parameters Tab : Capture OSR
 
Capture OSR
Sets the over sampling rate when capturing the reception signal. Using OSR changes the bandwidth. Table: Operation of Capture (OSR) lists the operations.
When a value has not been set, the parameter is set to the default value.
When an out-of-range value is set, the value is changed to the optimal value. However, the measurement may not be performed correctly depending on the status of the reception signal.
Operation of Capture (OSR)
Function
Operation of Capture OSR
When Decreasing Capture OSR
When Increasing Capture OSR
Reception Bandwidth
Narrowed
Widened
Sampling Rate
Decreased
Increased
Capture Waveform Size
Decreased
Increased
Frequency Error Detection Range
Narrowed
Widened
Analysis Speed
Increased
Decreased
Default
Table: Capture OSR Default Value lists the default values.
Capture OSR Default Value
Modulation Type
Capture OSR Default Value
2FSK, 4FSK, HCPM
8
OQPSK
16
Other
4
 
APSK Ring Ratio
Sets the radius of the reference signal when Modulation Type is APSK. Restrictions of APSK Ring Ratio Setting is shown in Table: Restrictions of APSK Ring Ratio Settings.
Restrictions of APSK Ring Ratio Settings
Modulation Type
R2/R1
R3/R1
16APSK Yes
Yes
No
32APSK
Yes
Yes
Other
No
No
The APSK Ring Ratio diagrams for 16APSK and 32APSK are shown in Figure: APSK Ring Ratio 16APSK and 32APSK.
APSK Ring Ratio 16APSK and 32APSK
Range
R2/R1: 2.000 to 4.000
R3/R1: 4.000 to 9.000
When an out-of-range value is set, the value is rounded to a value within the Range.