User's Manual Part 2

Host Computer Commands
RVP8 User’s Manual
May 2003
6–26
The trigger count is a running tally of the number of triggers received by the RVP8 on the
TRIGIN line. It is a full 24-bit counter.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Number of Properly Acquired Bins for Current Range Mask & PRT | Output 16
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15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| No. of Valid Bins in Initial Part of Ray From Last PROC Cmd | Output 17
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15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Immediate Status Word #2 (Current State of Affairs) | Output 18
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Bit 0 Processor supports FFT algorithms
Bit 1 Processor supports Random Phase algorithms
Bit 3 Processor supports DPRT (Dual-PRT) algorithms
Bit 4 Problem in UpLink COAX cable from RVP8/Main ––> RVP8/IFD
Bit 5 Problem in DownLink fiber cable from RVP8/IFD ––> RVP8/Main
Bit 7 IFD PLL is not locked to external user-supplied clock reference
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 IFD test switches are not in their normal operating position
Bit 12 Set according to whether the RVP8 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 IFD Burst Input
Bit 14 Slave DSP count may be less than the number of available chips
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
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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
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