Specifications (oscilloscope)
The HP 1660AS Logic Analyzers also include the following specifications:
Bandwidth
(*,1)
DC to 250 MHz (real time, dc-coupled)
Time Interval Measurement Accuracy
(*,3,6)
± [( 0.005% X ∆t)+
(2 x 10
− 6
x delay setting)+150 ps]
DC Offset Accuracy
(*)
± ( 1.0% of channel offset + 2.0% of
full scale)
Volt age Measurement Accuracy
(*,5)
± [( 1.5% of full scale + offset accuracy)
+ ( 0.008 x V/div) ]
Trigger Sensitivity
(*)
DC to 50 MHz: 0.063 x full scale,
50 to 250 MHz: 0.125 x full scale
Input R (selectable)
(*)
1 MΩ: ± 1%, 50 Ω: ± 1%
* Specifications (valid within ± 10° C of auto-calibration temperature, excluding bandwidth− see note 1 for bandwidth specification.
1. Upper bandwidth reduces by 2.5 MHz for every degree C above 35° C.
2. Rise time is calculated from the formula:
t
r
=
0.35
bandwidth
3. Specification applies to the maximum sampling rate. At lower rates, the specification is:± [(0.005% x ∆t)+(2 x 10
-6
x delay setting)
+ (0.15 x sample interval)] for bandwidth limited signals (t
r
= 1.4 x sample interval). Sample interval is defined as
1
sample
rate
4. Vertical gain accuracy decreases 0.08% per degree C from software calibration temperature.
5. Digitizing level = (#vertical divisions)(
1
2
)(
1
LSB
), where LSB=2
# bits in ADC
6. The Time Interval Measurement Accuracy deteriorates across multiple modules connected as one unit with each added module.
General Information
Specifications (oscilloscope)
1–4