Typical Characteristics
2–28
TDS 500D, TDS 600B & TDS 700D Performance Verification and Specifications
Table 2–16: Typical characteristics — Signal acquisition system (cont.)
Name Description
n
og
ndw
dth, DC-
0 W Cou
d
with P6139A Probe (TDS 620B & 644B)
r P6245 Pr be T S 68 B 684B a
Volts/Div as read out on screen
TDS 620B & 644B
Bandwidth
1
TDS 680B & 684B
Bandwidth
1
o
o
(
D
0
&
)
nd
10 V/div – 100 V/div (Not Applicable) (Not Applicable)
ndw
dth s
t
on
s F
TDS 600B
100 mV/div – 10 V/div
DC – 500 MHz DC – 1 GHz
50 mV/div – 99.5 mV/div DC – 450 MHz DC – 750 MHz
20 mV/div – 49.8 mV/div DC – 300 MHz DC – 600 MHz
10 mV/div – 19.9 mV/div DC – 250 MHz DC – 500 MHz
Accuracy, Delta Time Measurement The limits are given in the following table for signals having amplitude greater than
5 divisions, reference level = 50%, filter set to (sinX/X), acquired at 5 mV/div or greater.
For the TDS 700D, pulse duration < 10 div. Channel skew not included.
For the Single Shot condition, 1.4 ≤ T
r
/S
i
≤ 4, where
S
i
is the sample interval and T
r
is the displayed rise time.
TDS 600B: For the averaged condition, 1.4 ≤ T
r
/W
i
≤ 40, where W
i
is the Waveform
Interval, as described elsewhere in these specifications.
TDS 600B: Extra error in the measurement will occur for two-channel measurements due
to channel-to-channel skew. This is described elsewhere in these specifications.
Time measurement accuracy
Conditions for accuracy listed at right
are: Single Shot or Sample mode (or
HiRes mode on the TDS 500D/700D),
with Full Bandwidth selected.
TDS 600B:±( (0.20 × sample interval) + (100 ppm × | Reading |) + (0.05 × W
i
) )
TDS 600B example: at 5 GS/s, 5 ns/div, measuring a 40 ns wide pulse,
accuracy = ±(40 ps + 4 ps + 5 ps) = ±49 ps.
TDS 500D/700D: ±0.15 sample interval + (25 ppm × | Reading |) + t/div/1000
TDS 500D/700D example: at 4 Gs/s, accuracy = 37.5 ps
Conditions for accuracy listed at right
are: ≥ 100 Averages, with Full Band-
width selected, and for TDS
500D/700D, repetitive mode.
TDS 600B: ±(10 ps + (100 ppm × | Reading |) + (0.25 × W
i
) )
TDS 500D/700D: 20 ps + (25 ppm × | Reading |) + t/div/1000
C
cu
d
T
, T
S 600B
Volts/Div setting
620B & 644B
Rise time
680B & 684B
Rise time
10 mV/div – 1 V/div 900 ps 450 ps
5 mV/div – 9.95 mV/div 1 ns 600 ps
2 mV/div – 4.98 mV/div 1.5 ns 750 ps
1 mV/div – 1.99 mV/div 1.8 ns 900 ps
