Options— 2230 Service
BINary, HEXADECIMAL, or ASCii. The resolution of data
points sent over the bus may be either 8 or 16 bits..
Waveform record length is 1024 or 4096, but the number
of data points per record depends on several variables.
See the description of NR.Pts in the Command Tables for
more information.
Binary Encoding
BINary data is transferred as an unsigned binary
integer. Each record is 8 bits, or 16 bits when averaged.
In BINary format, the waveform curve data is in the
form of: CURVE <space> % <Binary Count MSB>
<Binary Count LSB> <D ata> <Checksum> cTermi-
nator>
Where:
%
is used as a header character
to show the start of a binary
block.
<Binary Count MSB> is the most significant byte of
the two-byte Binary Count.
Binary Count is the length of
the waveform, in bytes, plus
the one byte Checksum.
<Binary Count LSB> is the least significant byte of
the Binary Count.
<D ata>
is made up of 256, 512, 1024,
2048 or 4096 data points.
Each data point is either a 1
byte (8-bit) or 2 byte (16-bit)
representation of each digi
tized value.
<Checksum>
is the two's-complement of the
modulo
256
sum
of the
preceding data bytes and the
binary count. The Checksum is
used by the controller to verify
that all data values have been
received correctly.
Table 7-26 shows an example of data sent over the
interface during a 4096 point, 8-bit BINary waveform
transfer. The actual waveform point (Pt.) values will vary
depending upon the signal acquired.
Table 7-27 shows an example of data sent over the
interface during a 4096 point, 16-bit BINary waveform
transfer.
Table 7-26
Typical 8-Bit Binary Waveform Data
Byte
Contents
Decimal
GPIB EOI
(1 = Asserted)
1
C
67
0
2
U
85
0
3
R
82
0
4
V
86
0
5
E
69
0
6
< S P >
32
0
7
%
37
0
8
<Bin Count
MSB>
16a
0
9
<Bin Count
LSB>
01a
0
10
1st Pt
<Ji
0
11
2nd Pt
d2
0
.
0
•
.
0
.
0
4105
4096th Pt
^4096
0
4106
<Checksum>
chk
1 When
TERM = EOI
4 l07b
< C R >
13
0
4108c
< L F >
10
1
*(1001,, or 4097,0)
bAII RS-232-C or GPIB with TERM =- LF/EOI.
cRS-232-C with TERM = CR-LF.
Hexadecim al Encoding
In
HEXadecimal
waveform
encoding,
characters
representing an 8-bit or 16-bit data point are sent in a
fixed ASCII hexadecimal format. There are no delimiters
between data points. Data format is very similar to BINary
format, with the following exceptions:
1.
The curve header is "CURVE # H " instead of
"CURVE %” .
2.
Each data point is 2 ASCII hexadecimal characters
for 8-bit and 4 ASCII hexadecimal characters for 16-bit
transfers.
7-29
Содержание 2230
Страница 12: ...2230 Service X The 2230 Digital Storage Oscilloscope 4998 01 ...
Страница 32: ...Operating Information 2230 Service 4998 04 Figure 2 4 Power and display controls and power on indicator 2 5 ...
Страница 33: ...Operating Information 2230 Service Figure 2 5 Vertical controls and connectors 2 6 ...
Страница 48: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Страница 56: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Страница 68: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Страница 76: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Страница 82: ...Theory of Operation 2230 Service 510 499 9 02 Figure 3 2 Block diagram of the Channel 1 Attenuator circuit 3 8 ...
Страница 98: ...Theory of Operation 2230 Service 499 9 06 Figure 3 6 Horizontal Amplifier block diagram 3 24 ...
Страница 111: ...Theory of Operation 2230 Service 3 37 Figure 3 9 Acquisition Memory timing ...
Страница 190: ...Maintenance 2230 Service 999 14 Figure 6 3 Isolated kernel timing 6 9 ...
Страница 218: ...Maintenance 2230 Service 4999 37 Figure 6 7 Location of screws and spacers on the Storage circuit board 6 37 ...
Страница 329: ...PUT Figure 9 2 S em ico n d u cto r lea d co n fig u ratio n s ...
Страница 332: ...2230Service CHASSIS MOUNTED PARTS ...
Страница 334: ...A14 CH 1 LOGIC BOARD ...
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Страница 347: ...i n 5 a O Q q o u S a o h UJ s a b c d e f g h j k l m n ...
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Страница 355: ...WAVEFORMS FOR DIAGRAM 5 4999 83 ...
Страница 358: ...I W L U O U rc a 4 2 s ...
Страница 361: ...WAVEFORMS FOR DIAGRAM 6 S 84 ...
Страница 362: ...2230 Service TEST SCOPE TRIGGERED ON U665 PIN 8 FOR WAVEFORMS 31 THROUGH 33 ...
Страница 365: ... I I ...
Страница 366: ...A 1 6 S W E E P R EFEREN CE BOARD FIG 9 17 2230 Service Figure 9 17 A16 Sweep Reference board ...
Страница 369: ... o 0 UJU sa eg aiu c u J in su eg 5 C sis n g e s o N QO ...
Страница 371: ...Static Sensitive Devices See Maintenance Section CM I rv CD o 2230 Service ...
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Страница 388: ...H K L M N 7 8 8 2 2 3 0 INPUT OUTFUT WIRING INTERCONNECT ...
Страница 392: ...W A V E F O R M S F O R D IA G R A M 14 ...
Страница 393: ...2230Service 0 0 d s t 4 9 9 9 9 5 ...
Страница 394: ...2230 Service TEST SCOPE TRIGGERED ON U911 PIN 21 FOR WAVEFORMS 64 THROUGH 69 4999 92 ...
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Страница 397: ...WAVEFORMS FOR DIAGRAM 15 TEST SCOPE TRIGGERED ON U9111 PIN 21 FOR WAVEFORMS 70 THROUGH 77 ...
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Страница 406: ...2230 Service n CD O O i 0 s a f s s o m O F ig u re 9 5 D e ta ile d S to ra g e b lo c k diagram 4999 22 ...
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Страница 415: ...IMF PU TPR A IR TM FQ U I W A V E F O R M SF O RO IA G R A M1 5 W A V E F O R M SF O R i ...
Страница 417: ...4999 9S ...
Страница 419: ...i s 5 0 C C p F 2 CC p 2 a u 4 I s c c O 2 e e o 5 a o 5 i 2 i f 2 E C 52 ...
Страница 421: ...TEST SCOPE TRIGGERED ON U4105 PIN 9 FOR WAVEFORMS 121 AND 122 TEST SCOPE TRIGGERED ON U4227 PIN 10 i 4999 97 ...
Страница 423: ...W A V E F O R M SF O RD IA G R A M1 8 O c n ...
Страница 424: ...Figure 9 22 A11A1 Input Output board ...
Страница 427: ...WAVEFORMS FOR DIAGRAM 19 TEST SCOPE TRIGGERED ON U6103 PIN 1 FOR WAVEFORMS 126 AND 127 4999 98 ...
Страница 430: ...Figure 9 23 A11A2 Vector Generator board ...
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Страница 437: ...22 3 0 S ervice W A V E F O R M S F O R D I A G R A M 2 1 m f n h ...
Страница 442: ...WAVEFORMS FOR DIAGRAM 22 4999 78 ...
Страница 443: ...XY PLOTTER BOARD DIAGRAM 22 See Parts List for serial number ranges ...
Страница 444: ... u i o IO U J J i o D U I 1 t ir u j t O 0 X I c a a 3 4 2230 4999 71 REV FE8 1987 XY PLOTTER BOARD 22 ...
Страница 447: ...A21 RS 232 OPTION BOARD Flfi A 9 K 01 01 W M ...
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Страница 452: ...COMPONENT NUMBER EXAMPLE ...
Страница 455: ...r n n i i i i n O T IA ll D A A o n XY PLOTTER BOARD P in A23 OPTION MEMORY BOARD FIG 9 27 A22 GPIB OPTION BOARD ...
Страница 459: ...A16 SWEEP REFERENCE ADJUSTMENT LOCATION ...
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