Jäger ADwin-Pro II System And Hardware Description Download

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Pro II: Analog Input Modules

Pro II-AIn-F-4/14 Rev. E

ADwin

ADwin-Pro II

Hardware, manual Dec. 2018

5.5.6 Pro II-AIn-F-4/14 Rev. E

The analog input module Pro II-AIn-F-4/14 Rev. E has 4 Fast-ADC of 14 Bit
and 4 differential inputs.

The inputs are available with the following connectors:

– Pro II-AIn-F-4/14: shielded LEMO connectors, 1-pole, CAMAC Euro-

pean norm.

– Pro II-AIn-F-4/14-L2: shielded LEMO connectors, 2-pole, CAMAC Euro-

pean norm.

– Pro II-AIn-F-4/14-D: D-Sub female connector 37-pin.

– Pro II-AIn-F-4/14-B: BNC female connectors.

The module’s converters run stand-alone with a fixed clock rate of 50MHz; the
program fetches only the recently converted measurement values. The mod-
ule memory enables to buffer the great data volume of burst sequences.

The module Pro II-AIn-F-4/14 Rev. E has an input voltage range of ±10V. The
adjustment of gain and offset is made by software. (see chapter 6 "Calibra-
tion").

The module provides several operation modes for converting analog signals:

– Single measurement: The module converts stand-alone (with fixed

clock rate). The

ADbasic

program queries the current measurement

value and processes them.

– Single burst sequence: The

ADbasic

program starts a compelete burst

measurement sequence, that is a defined number of single measure-
ments.

– Continuous burst sequence: The

ADbasic

program starts a burst mea-

surement sequence, that continuously does single measurements until
the sequence is stopped. The data is stored in a fifo-like memory.

As an option, the module can return the moving average of 2…32 measure-
ment values instead of simple measurement values. For each average value,
the module separately samples the number of set measurement values.

The module can control an upper and lower limit for each channel separately.

Burst Sequence

The module processes burst sequences independent from the processor mod-
ule of the

ADwin

system. The measurement values–number and measuring

rate to be defined ahead in the program–are stored in the burst-memory of the
module. The processor module then reads the stored values (even during a
burst sequence) and processes them.

With a continuous burst-sequence, the measuring rate must be syntonized to
the reading rate. Please note:

– Measurement values are always read in blocks, the block size is select-

able. The greater the data blocks are, the faster the average reading is
done.

Look out: While a block is read, other processes even with higher priority
may be delayed. The probability of a delay rises with the block size.

– The time offset between continuous conversion and blockwise reading

demands a data buffer. Therefore, the initialization of the burst
sequence must allocate sufficient memory range (

P2_Burst_Init

parameter

samples

Event Inputs

With module version Pro II-AIn-F-4/14-D Rev. E (D-Sub female connector), a
burst sequence can be controlled by external event signals, i.e. each (result-
ing) event signal has a measurement value stored.