Specification—475
POSITION Control Range
At least +12 and —12 divisions from graticule center.
Signal Delay Between Channel 1 and Channel 2
±0.25 nanosecond at 5 m V /D IV.
Input R and C Time Constant
Aberrations should be 2% or less using a one megohm,
20 picofarad input time-constant normalizer.
TRIGGERING
External Trigger Input Capacitance
Twenty picofarads within 30%.
TRIG VIEW Deflection Factor
50 mV/div ±20%. Exclude LF REJ and HF REJ trigger
coupling modes.
TRIG VIEW Risetime
<3.5 nanoseconds over the 10% to 90% part of the fast
rise portion.
TRIG VIEW Delay Difference
< 2 nanosconds with 5 division signal having 1
nanosecond or less risetime from 25 ohm source, centered
vertically with equal cable length from signal source to
vertical channel and external trigger inputs, each terminated
in 50 ohms.
TRIG VIEW Centering of Trigger Point
Adjustable to within one division of center screen.
HORIZONTAL DEFLECTION SYSTEM
Sweep Accuracy
Exclude the first 25 nanoseconds or 2 divisions
(whichever is greater) and all beyond the 100th division of
the sweep when checking 1 ns through 500 ns/division
magnified sweep rates.
Mixed Sweep Accuracy
Exclude the first 0.5 division after the display start, and
the first 0.2 division or 0.1 microsecond (whichever is
greater) after the transition of A to B.
Differential Time Measurement Accuracy
Exclude DELAY TIM E POSITION dial settings of 0.00
through 0.50 for 0.5 second through 1.0 microsecond/
division delaying sweep rates.
Exclude DELAY TIM E POSITION dial settings of 0.00
through 1.00 for 0.5 microsecond through 0.05
microsecond/division delaying sweep rates.
Sweep Length (A Only)
At least 10.1 divisions.
Magnifier Registration
Within 0.5 division from graticule center at 1
millisecond/division.
POSITION Control Range
Start of sweep must position to right of graticule center.
End of sweep must position to left of graticule center.
Check made at 1 millisecond/Division sweep rate.
Phase Difference between X and Y Axes Amplifiers
Within 1° from DC to 1 megahertz. Within 3° from 1
megahertz to 2 megahertz.
X Axis Low Frequency Linearity
0.2 division or less compression or expansion of a 2
division signal (at center screen) positioned to both
horizontal extremes of the display area.
CALIBRATOR
Repetition Rate
Repetition Rate accuracy is typically within 25%.
Output Resistance
Approximately 9.4 ohms.
EXTERNAL Z AXIS INPUT
Maximum Input Voltage
Voltages applied to the EXT Z AXIS INPUT connector
should be limited to less than 100 volts DC plus peak AC or
100 volts peak to peak AC at 1 kilohertz or less.
1-5
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