Options— 2230 Service
When EOI (normal mode) is selected as the terminator,
the instrument will:
• Accept only EOI as the end-of-message terminator.
• Assert EOI concurrently with the last byte of a mes
sage.
When LF is selected as the terminator, the instrument
will:
• Accept either LF or EOI as the end-of-message ter
minator.
• Send Carriage Return (OR) followed by LF at the
end of every message, with EOI asserted con
currently with the LF.
Talk/Listen Mode
Three talk/listen modes are selectable:
• TALK ONLY mode allows the instrument to send
data over the GPIB.
• LISTEN ONLY mode permits the instrument to
receive data over the GPIB.
• TALK/LISTEN mode (both TON and LON modes
selected) allows the instrument to both send and
receive data over the GPIB.
The default mode is TALK/LISTEN.
To select or change the talk/listen mode, select TON
and/or LON using the GPIB PARAMETERS switch and
Table 7-6.
RS-232-C PARAMETER SELECTION
Selection of RS-232-C parameters (baud rate, parity,
and line terminator) can be made at any time using the
RS-232-C PARAMETER switch and Table 7-7 through
Table 7-9.
Baud Rate
The selected RS-232-C baud rate establishes the baud
rate used by the instrument for both sending and receiving
data. Baud rates selectable are listed in Table 7-9.
When OFF LINE is selected as the baud rate, the
instrument still presents an active load but does not
respond to nor interfere with any bus traffic. This is useful
for changing the instrument’s status without turning off the
oscilloscope’s power.
Use Table 7-7, Table 7-8 and the PARAMETERS
switch to select the desired baud rate.
Parity
The parity parameters selected determine the instru
ment response to received parity errors and the parity of
data sent by the instrument.
Section 5 of the PARAMETERS switch determines
whether or not received parity errors will cause an SRQ
(see Table 7-7).
Sections 6 and 7 of the PARAMETERS switch deter
mine the parity used when transmitting data over the bus.
ODD, EVEN, MARK, or SPACE are selectable (see
Table 7-9).
Line Terminator
The line terminator can be selected to be either the car
riage return (CR) or the CR and Line-Feed (LF) characters.
When CR (normal mode) is selected as the terminator,
the instrument will:
• Accept only CR as the line terminator.
• Send CR as the last byte of a message.
When CR LF is selected as the terminator, the instru
ment will:
• Accept either CR or LF as the line terminator.
• Send Carriage Return (CR) followed by LF at the
end of every message.
Section 8 of the PARAMETERS switch determines the
line terminator. Select the desired line terminator using the
PARAMETERS switch and Table 7-7.
MESSAGES AND
COMMUNICATION PROTOCOL
Option commands can set the instrument operating
mode, query the results of measurements made, or query
the state of the oscilloscope. The commands are specified
7-10
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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 ...
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Страница 334: ...A14 CH 1 LOGIC BOARD ...
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Страница 362: ...2230 Service TEST SCOPE TRIGGERED ON U665 PIN 8 FOR WAVEFORMS 31 THROUGH 33 ...
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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 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 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 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 ...
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