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RTR/!Scope/!Help

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

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Scope V3.0 Copyright Mike Cook - Musbury Consultants all rights 
reserved 

Tel. 01706 216701
5 Helmshore Rd,
Haslingden,
Rossendale,
Lancs.
BB4 4BG

Realtime analogue oscilloscope
This requires the hardware described in the July 98 issue of Acorn User.

X Scale
The first 4 buttons set the application to read in 344 samples at a time.
Sucessive buttons after this double the number of samples taken per sweep.
These are:- 688, 1376 and 2752.
Note at these higher sample rates the multitasking can be a bit slugish.
You can always use the X shift slider to examin the whole 2752 sample buffer,
however, if you have not read in this much the rest of the buffer may be meaningless.
The whole buffer may be reset using the "wipe" button.

To measure the time between two points on a waveform:-
1) Click adjust on the first point, a line will be drawn, this is the refrance point.
2) Click select on the second point, the time between these points will be measured.
3) Repeted select clicks will show the distance in time.
4) A second adjust click will remove the refrance point.
00000000  53 63 6f 70 65 20 56 33  2e 30 20 43 6f 70 79 72  |Scope V3.0 Copyr|
00000010  69 67 68 74 20 4d 69 6b  65 20 43 6f 6f 6b 20 2d  |ight Mike Cook -|
00000020  20 4d 75 73 62 75 72 79  20 43 6f 6e 73 75 6c 74  | Musbury Consult|
00000030  61 6e 74 73 20 61 6c 6c  20 72 69 67 68 74 73 20  |ants all rights |
00000040  0a 72 65 73 65 72 76 65  64 20 0a 0a 54 65 6c 2e  |.reserved ..Tel.|
00000050  20 30 31 37 30 36 20 32  31 36 37 30 31 0a 35 20  | 01706 216701.5 |
00000060  48 65 6c 6d 73 68 6f 72  65 20 52 64 2c 0a 48 61  |Helmshore Rd,.Ha|
00000070  73 6c 69 6e 67 64 65 6e  2c 0a 52 6f 73 73 65 6e  |slingden,.Rossen|
00000080  64 61 6c 65 2c 0a 4c 61  6e 63 73 2e 0a 42 42 34  |dale,.Lancs..BB4|
00000090  20 34 42 47 0a 0a 52 65  61 6c 74 69 6d 65 20 61  | 4BG..Realtime a|
000000a0  6e 61 6c 6f 67 75 65 20  6f 73 63 69 6c 6c 6f 73  |nalogue oscillos|
000000b0  63 6f 70 65 0a 54 68 69  73 20 72 65 71 75 69 72  |cope.This requir|
000000c0  65 73 20 74 68 65 20 68  61 72 64 77 61 72 65 20  |es the hardware |
000000d0  64 65 73 63 72 69 62 65  64 20 69 6e 20 74 68 65  |described in the|
000000e0  20 4a 75 6c 79 20 39 38  20 69 73 73 75 65 20 6f  | July 98 issue o|
000000f0  66 20 41 63 6f 72 6e 20  55 73 65 72 2e 0a 0a 58  |f Acorn User...X|
00000100  20 53 63 61 6c 65 0a 54  68 65 20 66 69 72 73 74  | Scale.The first|
00000110  20 34 20 62 75 74 74 6f  6e 73 20 73 65 74 20 74  | 4 buttons set t|
00000120  68 65 20 61 70 70 6c 69  63 61 74 69 6f 6e 20 74  |he application t|
00000130  6f 20 72 65 61 64 20 69  6e 20 33 34 34 20 73 61  |o read in 344 sa|
00000140  6d 70 6c 65 73 20 61 74  20 61 20 74 69 6d 65 2e  |mples at a time.|
00000150  0a 53 75 63 65 73 73 69  76 65 20 62 75 74 74 6f  |.Sucessive butto|
00000160  6e 73 20 61 66 74 65 72  20 74 68 69 73 20 64 6f  |ns after this do|
00000170  75 62 6c 65 20 74 68 65  20 6e 75 6d 62 65 72 20  |uble the number |
00000180  6f 66 20 73 61 6d 70 6c  65 73 20 74 61 6b 65 6e  |of samples taken|
00000190  20 70 65 72 20 73 77 65  65 70 2e 0a 54 68 65 73  | per sweep..Thes|
000001a0  65 20 61 72 65 3a 2d 20  36 38 38 2c 20 31 33 37  |e are:- 688, 137|
000001b0  36 20 61 6e 64 20 32 37  35 32 2e 0a 4e 6f 74 65  |6 and 2752..Note|
000001c0  20 61 74 20 74 68 65 73  65 20 68 69 67 68 65 72  | at these higher|
000001d0  20 73 61 6d 70 6c 65 20  72 61 74 65 73 20 74 68  | sample rates th|
000001e0  65 20 6d 75 6c 74 69 74  61 73 6b 69 6e 67 20 63  |e multitasking c|
000001f0  61 6e 20 62 65 20 61 20  62 69 74 20 73 6c 75 67  |an be a bit slug|
00000200  69 73 68 2e 0a 59 6f 75  20 63 61 6e 20 61 6c 77  |ish..You can alw|
00000210  61 79 73 20 75 73 65 20  74 68 65 20 58 20 73 68  |ays use the X sh|
00000220  69 66 74 20 73 6c 69 64  65 72 20 74 6f 20 65 78  |ift slider to ex|
00000230  61 6d 69 6e 20 74 68 65  20 77 68 6f 6c 65 20 32  |amin the whole 2|
00000240  37 35 32 20 73 61 6d 70  6c 65 20 62 75 66 66 65  |752 sample buffe|
00000250  72 2c 0a 68 6f 77 65 76  65 72 2c 20 69 66 20 79  |r,.however, if y|
00000260  6f 75 20 68 61 76 65 20  6e 6f 74 20 72 65 61 64  |ou have not read|
00000270  20 69 6e 20 74 68 69 73  20 6d 75 63 68 20 74 68  | in this much th|
00000280  65 20 72 65 73 74 20 6f  66 20 74 68 65 20 62 75  |e rest of the bu|
00000290  66 66 65 72 20 6d 61 79  20 62 65 20 6d 65 61 6e  |ffer may be mean|
000002a0  69 6e 67 6c 65 73 73 2e  0a 54 68 65 20 77 68 6f  |ingless..The who|
000002b0  6c 65 20 62 75 66 66 65  72 20 6d 61 79 20 62 65  |le buffer may be|
000002c0  20 72 65 73 65 74 20 75  73 69 6e 67 20 74 68 65  | reset using the|
000002d0  20 22 77 69 70 65 22 20  62 75 74 74 6f 6e 2e 0a  | "wipe" button..|
000002e0  0a 54 6f 20 6d 65 61 73  75 72 65 20 74 68 65 20  |.To measure the |
000002f0  74 69 6d 65 20 62 65 74  77 65 65 6e 20 74 77 6f  |time between two|
00000300  20 70 6f 69 6e 74 73 20  6f 6e 20 61 20 77 61 76  | points on a wav|
00000310  65 66 6f 72 6d 3a 2d 0a  31 29 20 43 6c 69 63 6b  |eform:-.1) Click|
00000320  20 61 64 6a 75 73 74 20  6f 6e 20 74 68 65 20 66  | adjust on the f|
00000330  69 72 73 74 20 70 6f 69  6e 74 2c 20 61 20 6c 69  |irst point, a li|
00000340  6e 65 20 77 69 6c 6c 20  62 65 20 64 72 61 77 6e  |ne will be drawn|
00000350  2c 20 74 68 69 73 20 69  73 20 74 68 65 20 72 65  |, this is the re|
00000360  66 72 61 6e 63 65 20 70  6f 69 6e 74 2e 0a 32 29  |france point..2)|
00000370  20 43 6c 69 63 6b 20 73  65 6c 65 63 74 20 6f 6e  | Click select on|
00000380  20 74 68 65 20 73 65 63  6f 6e 64 20 70 6f 69 6e  | the second poin|
00000390  74 2c 20 74 68 65 20 74  69 6d 65 20 62 65 74 77  |t, the time betw|
000003a0  65 65 6e 20 74 68 65 73  65 20 70 6f 69 6e 74 73  |een these points|
000003b0  20 77 69 6c 6c 20 62 65  20 6d 65 61 73 75 72 65  | will be measure|
000003c0  64 2e 0a 33 29 20 52 65  70 65 74 65 64 20 73 65  |d..3) Repeted se|
000003d0  6c 65 63 74 20 63 6c 69  63 6b 73 20 77 69 6c 6c  |lect clicks will|
000003e0  20 73 68 6f 77 20 74 68  65 20 64 69 73 74 61 6e  | show the distan|
000003f0  63 65 20 69 6e 20 74 69  6d 65 2e 0a 34 29 20 41  |ce in time..4) A|
00000400  20 73 65 63 6f 6e 64 20  61 64 6a 75 73 74 20 63  | second adjust c|
00000410  6c 69 63 6b 20 77 69 6c  6c 20 72 65 6d 6f 76 65  |lick will remove|
00000420  20 74 68 65 20 72 65 66  72 61 6e 63 65 20 70 6f  | the refrance po|
00000430  69 6e 74 2e                                       |int.|
00000434