Chapter 7 __________________________________________________ Host Computer Commands
VAISALA______________________________________________________________________ 299
0916-127
Bits 8-10 Status of burst pulse and AFC feedback
1: AFC Disabled
2: Manual Frequency Control
3: No burst pulse detected
4: AFC is waiting for warm-up
5: AFC is locked
6: AFC is tracking
Bit 11 IFDR test switches are not in their normal operating
position
Bit 12 Set according to whether the RVP900 is performing trigger
blanking. This allows the host computer to decide whether
to interpret the End-TAG-0 bit in the output ray header as a
blanking flag, or as a normal TAG line.
Bit 13 Missing signal at IFDR #1 Burst Input
Bit 14 Reserved (zero)
Bit 15 Set when valid burst power is detected, but the
center-of-mass lies outside of the aperture sub-window that
defines the portion of the pulse used for AFC analysis. This
error bit effectively flags when the burst pulse has drifted
out of its optimal placement within the sampling window.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Starting Range in Km at Which Noise Sample Data are Taken | Output 19
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Trigger Period (0.16667usec Increments) During Noise Sampling | Output 20
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 0 | Output 21
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 1 | Output 22
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 2 | Output 23
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Min Trig Period (0.16667usec Increments) for Pulse Width 3 | Output 24
|_______________________________________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Four 4-bit Control Bit Patterns for Each Pulse Width | Output 25
|_______________________________________________________________|
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