Tektronix 2445, Инструкция по эксплуатации, Страница: 17 / 351

Specification—2445 Service
T - L I - 1 A
I d u i c I s I \ i # C n i /
Characteristics
Performance Requirements
TRIGGERING (cont)
AUTO Mode Maximum Triggering Signal Period
A SEC/DIV Switch Setting Less than 10 ms
A t least 80 ms.a
A SEC/DIV Switch Setting from 10 ms to 50 ms A t least 16 times the A SEC/DIV switch setting.3
A SEC/DIV Switch Setting from 100 ms to 500 ms A t least 800 ms.a
AUTO LV L Mode Trigger Acquisition Time Eight to 100 times the AUTO LV L Mode maximum triggering-signal
period, depending on the triggering-signal period and waveform.3
HO RIZONTAL DEFLECTION SYSTEM
A Sweep Time Base Range
1 s per division to 10 ns per division in a 1-2-5 sequence of 25 steps.
X10 MAG feature extends maximum sweep speed to 1 ns per
division.
B Sweep Time Base Range
50 ms per division to 10 ns per division in a 1-2-5 sequence of
21 steps. X10 MAG feature extends maximum sweep speed to
1 ns per division.
SEC/DIV VAR Control
Continuously variable and calibrated between settings o f the SEC/
D IV switch. Extends slowest A Sweep speed to 1.5 s per division.
Operates in conjunction w ith the A SEC/DIV switch when A and B
are locked together; operates in conjunction w ith the B SEC/DIV
switch when A and B are not locked together.
Timing Accuracy (+15°C to +35°C, SEC/DIV
switch set to 0.1 s per division or less)
A and B Sweep Accuracy, Time Intervals
Measured at Vertical Center w ith SEC/DIV
VAR Control in Detent
Unmagnified
Magnified
± (0.7% o f time interval
+ 0.6% o f fu ll scale).
± (1.2% o f time interval
+ 0.6% o f fu ll scale).
0.6% o f full scale is 0.06 division.
A t Accuracy, Time Intervals Measured w ith
Cursors, Anywhere on the Graticule
(A Sweep Only)
Unmagnified Magnified
± (0.5% o f time interval
+ 0.3% o f fu ll scale).
± (1% o f time interval
+ 0.3% o f full scale).
A t Accuracy, Time Intervals Measured w ith
Delayed B Sweep w ith Both Delays Set at 1%
or More of Full Scale from Minimum Delay
(no ? displayed in readout)
± (0.3% o f time interval +0.1% o f full scale).
Delay Accuracy, A Sweep Trigger Point to Start i ± (0.3% o f delay s 0.6% of fu ll scale) +0 to —25 ns.
o f B Sweep
Timing Accuracy (A SEC/DIV switch set to 0.5 s or
0.2 s per division) Add ±0.5% o f time interval to all accuracy specifications.
aPerformance Requirement not checked in manual.
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