Tektronix 2465A Service Manual page 22

Characteristics
Maximum Count
Display Update Rate
Maximum Event Count
Minimum Time from Start Signal
to Any Delay Event
Minimum Function-True Time
Minimum Function-False Time
Specification-2465A/2467 Service
Table 1-2 (cont)
Performance Requirements
TOTALIZE
9999999.
Twice per second or once per event, whichever is slower.
DELAY BY EVENTS
4194303.
4 ns.
LOGIC TRIGGER
4 ns.
4 ns.
ADDED DELAY TIME CHARACTERISTICS WITH C/T /T
Run After Delay
Accuracy
Triggerable After Delay
Accuracy
Minimum Measurable Delay Time
Display Update Rate
b See Tables 1-3 and 1-4.
c B
Time/Div includes SEC/DIV, X10 MAG, and VAR.
LSD b
+
[0.0012 X
(A SEC/DIV)]
+
[0.03 X (B
Time/Div)c]
+
A
Trigger Level Error
+
50 ns.
When the A Sweep is triggered by the Word Recognizer in
synchronous mode, add 100 ns for probe delay; in asynchronous
mode, add
200
ns for probe delay.
For intervals within
70
ns to
10
times the A-SEC/DIV Setting.
LSD b
+
[10
ppm
x
(measured interval)]
+
TJE
+
A-Trigger Level
Error
+
B-Trigger Level Error
+
0.5
ns.
If the A and B Sweeps are triggered from different channels, add
0.5 ns for channel-to-channel mismatch.
When the A Sweep is triggered by the Word Recognizer in
synchronous mode, add
100
ns for probe delay; in asynchronous
mode, add 200 ns for probe delay.
<=70 ns.
In Auto Resolution, twice per second or once for every sweep,
whichever is slower.
In
1
ns,
100
ps, and
10
ps resolution modes, the update rate
depends on the A SEC/DIV setting and the trigger repetition rate.
d This term assumes the trigger points are between the 10% and 90% points of the waveforms. Fall time is expressed as a negative
risetime.
1-13