TM 11-6625-3145-14
Introduction & Specifications-318/338 Service
Table 1-1 (cont.)
318/338 ELECTRICAL SPECIFICATIONS
Performance
Supplemental
Characteristics
Requirements
Information
Trigger position
In delay mode, the trigger posi-
Begin
word 7
tion is assigned by the user as
Center
word 127
follows:
End
word 247
Trigger position = (250 - delay
Delay
word 250 (when delay value is set to 0)
value).
Trigger position accuracy
±
1 clock
External trigger only.
Trigger mode
Immediately (first trigger) or After Memory
If instrument does not complete
Full
full memory acquisition before
the end of store, a fraction of
the display is indicated as "inva-
lid" data on data display.
Trigger output
Initiated high when an internal trigger se-
quence, glitch trigger, or external trigger was
detected. Reset on next acquisition start.
Output level
TTL
0.7 V or less for low level
output.
Voltage, maximum
+6 V
2.4 V or more for high level
output.
Current, maximum
High-logic level
-1 mA
Low-logic level
2 mA
Typical propagation delay
60 ns after the trigger event is clocked and
detected with internal clock.
80 ns after the trigger event is clocked and
Measured from external clock
detected with external clock.
input to trigger output.
±
1 clock interval when external trigger is
Measured from external trigger
used.
input to trigger output.
Qualifier
Input
9th channel of each P6451 probe is used as
For more information, refer to
a qualifier input.
P6451 literature.
Input R and C
1 M
Ω
± 5%, paralleled by approx. 5 pF
(without leads).
Minimum logic swing
500 mV p-p centered on threshold voltage.
1-7
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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Page 555: ...PIN 058584 ...