Tektronix DPO77002SX User Manual

Delta time measurement accuracy The formula to calculate the maximum delta-time measurement accuracy (DTAmax) for a given
instrument setting and input signal is given below (assumes insignificant signal content above
Nyquist and insignificant error due to aliasing, overdrive recovery and overdrive interpolation):
N
typ
= typical input-referred noise spec (volts rms)
F
N
= 1.3 for instrument bandwidth ≤9 GHz; 1.5 for instrument bandwidth ≥10 GHz
SR
1
= slew rate around 1st point in measurement (1st edge)
SR
2
= slew rate around 2nd point in measurement (2nd edge)
F
I
= 1.2 × 10–2
t
r1
= rise time of first edge
t
r2
= rise time of second edge
t
j
= sample jitter/aperture uncertainty (about 100 fs for time durations less than 10 μs)
Peak-peak based on statistical accumulation of 500 waveforms.
DTA
MAX
pk-pk
(
seconds
)
=10 × (N
typ
× F
N
)
2
(
1
SR
1
)
2
+
(
1
SR
2
)
2
+ F
I
2
×
(
t
r1
2
+ t
r2
2
)
+ (2 × t
j
2
)
RMS is guaranteed regardless of data-gathering duration.
DTA
MAX
rms
(
seconds
)
= (N
typ
× F
N
)
2
(
1
SR
1
)
2
+
(
1
SR
2
)
2
+ F
I
2
×
(
t
r1
2
+ t
r2
2
)
+ (2 × t
j
2
)
The term under the square-root sign is the stability and is due to time interval error (TIE).
Trigger specifications
Specifications Horizontal and acquisition system (cont.)
192 DPO70000SX Series User

Tektronix DPO77002SX Specifications

General

Brand	Tektronix
Model	DPO77002SX
Category	Test Equipment
Language	English