Tektronix 2445 User Manual

Specification—2445 Operators
Table 1-1 (cont)
Characteristics
Performance Requirements
HORIZONTAL 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.
X I0 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 of the SEC/
DIV switch. Extends slowest A Sweep speed to 1.5 s per division.
Operates in conjunction with the A SEC/DIV switch when A and B
are locked together; operates in conjunction with 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 with SEC/DIV
VAR Control in Detent
Unmagnified
Magnified
± (0.7% of time interval
+ 0.6% of full scale).
± (1.2% of time interval
+ 0.6% of full scale).
0.6% of full scale is 0.06 division.
At Accuracy, Time Intervals Measured with
Cursors, Anywhere on the Graticule
(A Sweep Only)
Unmagnified
Magnified
± (0.5% of time interval
+ 0.3% of full scale).
± (1%' of time interval
+ 0.3% of full scale).
At Accuracy, Time Intervals Measured with
Delayed B Sweep with Both Delays Set at 1%
or More of Full Scale from Minimum Delay
(no ? displayed in readout)
± (0.3% of time interval + 0.1% of full scale).
Delay Accuracy, A Sweep Trigger Point to Start
of B Sweep
± (0.3% of delay setting + 0.6% of full scale) — 25 ns.
Timing Accuracy (A SEC/DIV switch set to 0.5 s or
0.2 s per division)
Add ±0.5% of time interval to all accuracy specifications.
Timing Accuracy (A SEC/DIV switch set to 1 s per
division)
Add ±2% of time interval to all accuracy specifications.
Timing Accuracy (SEC/DIV VAR control out of
detent)
Add 2% of time interval to the A and B Sweep Accuracy
specification.
Timing Accuracy (—15°C to +15°C and +35°C
to +55° C)
Add ±0.2% of time interval to all At and delay specifications. Add
±0.5% of time interval to A and B Sweep accuracy specifications.
At Readout Resolution
Greater of either 20 ps or 0.025% of full scale.
At Range
± 10 times the A SEC/DIV switch setting.
Delay Pickoff Jitter
Within 0.004% (one part or less in 25,000) of the maximum
available delay, plus 100 ps.
1-6

Tektronix 2445 Specifications

General

Brand	Tektronix
Model	2445
Category	Test Equipment
Language	English