Keithley DAS-1800ST Series User Manual page 99

Table A-2. Analog Input Specifications for DAS-1800HR Series (cont.)
Feature
Dynamic parameters
Common-mode rejection ratio • 100 dB for gain = 1
Input overvoltage
2
Noise
Bipolar electrical noise
(in counts)
Unipolar electrical noise
(in counts)
DMA
Interrupt levels
Burst Mode Acquisition
Control:
Length
Other
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DAS-1802HR/HR-DA
• Acquisition time: 2µs
• Aperture delay: 6.0ns
• Aperture uncertainty:
- 100ps rms when used with internal pacer clock
- 200ns maximum with external pacer clock
• Conversion time: 8.0µs maximum
• 100 dB for gain = 2
• 100 dB for gain = 4
• 100 dB for gain = 8
• ±15.0V continuous powered and unpowered
• p-p = ±2.0, rms = 0.5 for gain = 1
• p-p = ±2.0, rms = 0.5 for gain = 2
• p-p = ±2.5, rms = 0.6 for gain = 4
• p-p = ±2.5, rms = 0.7 for gain = 8
• p-p = ±2.0, rms = 0.6 for gain = 1
• p-p = ±2.0, rms = 0.6 for gain = 2
• p-p = ±2.5, rms = 0.7 for gain = 4
• p-p = ±3.0, rms = 0.8 for gain = 8
• Burst demand mode DMA on FIFO NOT EMPTY
• Programmable DMA levels 5, 6, and 7
• Single/dual DMA modes
• On FIFO NOT EMPTY (single/slow transfer)
• On FIFO HALF FULL (REPL MOV)
• On counter 2 terminal count
• On data overflow
• Programmable interrupt levels 3, 5, 7, 10, 11, and 15
• Shareable pulsed interrupts
Rate Programmable from 16kHz to 100kHz
Programmable from 1 to 256 conversions per trigger
Direct simultaneous-sample-and-hold support
A-5