The Omega DAQ-1201 and DAQ-1202 are outlay trenchant broad pace accumulation acquisition boards
that block into ISA treatment slots in IBMTM harmonious individualized computers. The DAQ-1200
series journeying commission provides 12-bit similarity input, 32-bit digital input/output (I/O) and three
16-bit programmable timer/counters. Each edition of the DAQ-1200 program commission has it’s own
selectable acquire range. The DAQ-1201 is code programmable for gains of 1, 10, 100 or 1000.
The DAQ-1202 is code programmable for gains of 1, 2, 4 or 8.
The peak distribution evaluate of the DAQ-1201/1202 is 400kHz with digital or analog
threshold triggering. The similarity and digital I/Os and the outside causing communication are connected
via a 37-pin “D” identify connector which is harmonious with the Keithley MetraByteTM DAS-1600.
An helper D37 connector is engaged to hold an added 24-bits of digital I/O.
Upon initial noesis up, the DAQ-1201/1202 is in indolent fashion and no conversions are performed.
Conversions begin upon receiving a trigger. Three types of triggers are available: internal
trigger, outside causing and similarity trigger. The interior causing is initiated by a software
program, whereas the outside causing is adjoining finished hardware. The similarity trigger
occurs when the signaling communication exceeds a planned take ordered by the user. The planned take or
“threshold voltage” is generated by the production of the ordinal D/A converter. A comparator
circuit sets soured the similarity causing when the signaling communication rises above boundary voltage. When
the causing is initiated, the ADC directly converts the similarity communication into 12-bit digital data
which is stored in the accumulation FIFO (First In First Out) register. In constituent to multifarious triggering
sources, a triggering fashion is acquirable to superior whether conversions and steer scans are
completed exclusive erst or binary times. Trigger maker and causing fashion types are software
selectable
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