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发表于 2013-4-7 09:47:22
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Contact Detect (Level H 'b')
Description:
This commmand exercises a simple method of Delta PES contact detection. The methodology is
heavily leveraged from Self Test FW Test 35.
Quick Help:
"ContactDetect, b[Flags],[Revs],[BaselineRevs],[StartWedge],[A],[B],[C],[D],[E],[StartHt],[HtInc],\n\r"
"[FixedPESThresh],[FilterDelta]";
Input Parameters:
0 - Flags
Bit 0 Search Mode
0 = Heater Only
1 = Write+Heat
Type: Unsigned 32-bit value
Range: 0 to 0xFFFFFFFF
Default: 0 indicates Heater only search
1 - Number of iterations
If entered, this parameter contains the number of Fast IO iterations (almost analogous to
revolutions) to measure for contact detect measurement point.
Type: Unsigned 8-bit value
Range: 0 to 0xFF
Default: 50
2 - Baseline iterations
If entered, this parameter contains the number of Fast IO iterations (almost analogous to
revolutions) to measure for contact detect baseline measurement.
Type: Unsigned 8-bit value
Range: 0 to 0xFF
Default: 50
3 - Starting wedge
This number is the starting wedge from Index.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFF
Default: 0
4 - Fast IO "A" wedges
This parameter specifies the "A" pre write/read number of wedges for Fast IO.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFE
Note there is a memory limitation on this value, this # wedges directly
impacts memory set aside for Fast IO.
Default: Scales with number of Servo wedges/track.
5 - Fast IO "B" wedges
This parameter specifies the "B" write/read number of wedges for Fast IO.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFE
Note there is a memory limitation on this value, this # wedges directly
impacts memory set aside for Fast IO.
Default: Scales with number of Servo wedges/track.
6 - Fast IO "C" wedges
This parameter specifies the "C" post write/read number of wedges for Fast IO.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFE
Note there is a memory limitation on this value, this # wedges directly
impacts memory set aside for Fast IO.
Default: Scales with number of Servo wedges/track.
7 - Fast IO "D" wedges
This parameter specifies the "D" secondary write/read number of wedges for Fast IO.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFE
Note there is a memory limitation on this value, this # wedges directly
impacts memory set aside for Fast IO.
Default: 0
8 - Fast IO "E" wedges
This parameter specifies the "E" post secondary write/read number of wedges for Fast IO.
Type: Unsigned 16-bit value
Range: 0x0000 to 0xFFFE
Note there is a memory limitation on this value, this # wedges directly
impacts memory set aside for Fast IO.
Default: 0
9 - Starting heater DAC
This number is the starting heater DAC.
Type: Unsigned 8-bit value
Range: 0x00 to 0xFF
Default: 0
10 - Heater DAC coarse increment
This number is the coarse heater DAC increment.
Type: Unsigned 8-bit value
Range: 0x00 to 0xFF
Default: 1
11 - Fixed PES Threshold
This number is the fixed PES threshold.
Type: Decimal float
Range: 14 character entry
Default: 0.05
12 - Filter Delta
This number is the filter delta.
Type: Unsigned 8-bit value
Range: 0x00 to 0xFF
Default: 70
Output Data:
If an error occurred, the following information will be displayed.
"DiagError aaaaaaaa R/W Status c R/W Error dddddddd"
where
aaaaaaaa is the Diagnostic Error Code
c is the status returned by the R/W subsystem
dddddddd is the error code returned by the R/W subsystem
If the Verbose Formatted ASCII Data Output Mode is selected:
Bit 0: Displays a legthy list of parameter initialization.
Bits 31-1: NA
Standard display:
Parameter setup
Heater Only Search
Revs aa
BaselineRevs bb
APreWrNumSvoWedges cccc
BWrNumSvoWedges dddd
CPostWrNumSvoWedges eeee
DRdNumSvoWedges ffff
EPostRdNumSvoWedges gggg
HeaterStart hh
HeaterIncr ii
PesThreshold +j.jjjjjjE+j
FilterDelta kk
where
aa, bb number of iterations of Fast IO measurements.
cccc Fast IO "A" parameter.
dddd Fast IO "B" parameter.
eeee Fast IO "C" parameter.
ffff Fast IO "D" parameter.
gggg Fast IO "E" parameter.
hh Heater Start.
ii Heater Increment.
+j.jjjjjjE+j Fixed PES Threshold.
kk Filter Delta window.
Contact Detect loop
State DAC dPESSigma
a, bb, c
a, bb, c
a, bb, c
a, bb, c
a, bb, c
a, bb, c
a, bb, c
where
a Contact Detect loop state, defined as:
S searching
DC contact detected
DV contact verified
bb Current heater DAC.
c dPES variance, displayed as Scientific Notation floating point value.
Test Summary ffff
L,
Zone aa
Cyl bbbbbbbb
Hd cc
Freq dddd
IW ee
Ovs ee
Dur ee
ContactVar f
ContactThresh g
Clearance h
Temp ii
M,
IW ee
OVS ee
OSD ee
Read Heat jj
Preheat jj
Write Heat jj
where
aa Target zone.
bbbbbbbb Target cylinder.
cc Target head.
dddd Frequency in MHz.
ee Write powers.
f Variance at contact.
g Threshold of contact.
h Calculated clearance at contact DAC.
ii Current drive temperature.
jj Heater values.
Revision History:
0001.0000 Initial revision.
0001.0001 Added new parameters:
Starting Heat
Coarse Heater Increment
Fixed PES Threshold
Filter Delta
0002.0000 Added new parameter Baseline Iterations.
This addition lines up naturally with the Iterations parameter, hence all
other parameters shifted down.
0011.0000 Combined the PSG Diagnostic Error Codes (PSGDEC) and the Diagnostic External
Test Service Error Codes (DETSEC) into a single set of Diagnostic Error Codes
(DiagError). |
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