Maintenance— 2230 Service
INPUT_PORTS. This exerciser displays the input data
for all microprocessor input ports. An explanation of the
displayed data is shown in Table 6-23.
A_TO_D_TESTS/SAMPLES. This exerciser sets the
number of acquisitions used to test the A/D Converter.
Turn the CURSORS control to select the number of
4096 byte acquisitions (a power of 2 is best) used to test
the A/D Converter (see LINEARITY exerciser).
A_TO_D_TESTS/LINEARITY. This exerciser tests the
acquisition A/D converter for missing bits.
Inject a highly linear 11 division vertically centered, (2 x
4096 x 50) ns duration triangle wave signal into the CH 1
or X input. Set the trigger so that the oscilloscope triggers
close to the negative peak.
If any codes are missing in samples x 4096 acquisi
tions a message indicating that there were missing codes
is displayed (and sent to the communications option if
operating in extended diagnostics).
Setting the trigger point close to the positive peak tests
negative going conversions.
The display is a histogram with a vertical scale of 5 x
samples X (codes converted) per division and a horizontal
scale of 0 to 255 codes across 10 divisions left to right
(25.5 codes per division).
COM_OPTION/DEBUG. This exerciser is used in
debuging the communications option. Debug outputs a
test message and displays any incoming messages (data)
on the crt.
PICTURES. The picture exercisers use line drawings to
exercise the instruments display system. The Tekbug is a
line drawing of the Tektronix symbol. The Wizard is a multi
function display. The gain of the display controller is
controlled by the CURSORS control. The position of the
display is controlled by the CH 1 and CH 2 POSITION
controls. If the VERTICAL POSITION and CURSORS
controls are not turned for about 5 seconds, the display is
automatically moved through its gain (CURSORS) and
POSITION ranges.
Table 6-23
Display Format Digit Definitions
Input Port Name
U Number
Crt Name
Number of
Bits Displayed
Acquisition Address Buffer
U3427 and U3428
ACQ_ADDR_BUF
16
Clock Delay Register
U4230
CLK_DELAY_REG
8
B Delay Timer
U4123 and U4124
B_DELAY_TIMER
12
Front Panel Instrument Status
U6103
FPJNSTAT
8
Front Panel Address Data
U6102
FP_AD_DATA
8
6-30
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 ...
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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 371: ...Static Sensitive Devices See Maintenance Section CM I rv CD o 2230 Service ...
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Страница 394: ...2230 Service TEST SCOPE TRIGGERED ON U911 PIN 21 FOR WAVEFORMS 64 THROUGH 69 4999 92 ...
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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 ...
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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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