Vaisala RVP900 - Set Pulse Width and PRF (SETPWF)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 1 | Input 3
|----------------------------------------------------------------|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 2 | Input 4
|----------------------------------------------------------------|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 3 | Input 5
|----------------------------------------------------------------|
8.15 Set Pulse Width and PRF (SETPWF)
SETPWF selects the pulse width and trigger rate.
A 4-bit pulse width code is passed in bits (13, 12, 9, 8) of the command word, and selects
one of 16 pulse widths as described under PWINFO. The new radar PRT is passed in word
#1. For all processing modes that use a
fixed trigger rate, this value defines the trigger
period that is output at all times except during noise measurements. For Dual-PRF
applications, this word
defines the short period (high PRF) rate. The long period is internally
computed as either 3/2, 4/3, or 5/4 the short period, and the trigger generator alternates
between the short and long rates on each successive ray.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| |UpperPW| (Rsv) |LowerPW| | 1 0 0 0 0 | Command
|---------------|-------|---|---|------------|-------------------|
UpperPW
Upper two bits of overall 4-bit pulse width selection
LowerPW
Lower two bits of overall 4-bit pulse width selection
RVP900 User Guide M211322EN-J
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