Keithley DAS-1800ST Series User Manual page 100

Table A-2. Analog Input Specifications for DAS-1800HR Series (cont.)
Feature
Minimum external pacer
clock pulse width
Maximum external pacer
clock rate
Minimum hardware trigger
pulse width
Triggering:
Source
Types
Pacer Clock:
Internal
External
Support for board-to-board
synchronization (XTRIG
input)
1
Monotonicity is guaranteed to 16 bits.
2
The figures in the table show the electrical noise introduced by the analog front end and include the
quantization noise.
A-6
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DAS-1802HR/HR-DA
10ns
98kHz
10ns
• Internal clock, internal gate
• Internal clock, external trigger (edge)
• Internal clock, external gate (level)
• External clock, internal gate
• External clock, external trigger (edge)
• External clock, external gate (level)
• All the above with programmable edge/level sense
• Post-trigger
• Pre-trigger
• About-trigger (using counter 0)
32-bit counter (82C54)
Programmable edge sense (±)
• 4-bit digital input port
• 4-b latched digital output port (with latch strobe)
Specifications