rotec      RAS / USA N&V Analyser

General Specifications

·         IBM PC/AT compatible

·         Pentium processor (all-in-one slot CPU), 128 Mbytes of memory

·         Chassis’ available: 8 slot RAS model or or 12 slot USA model, both w/passive ISA backplane

·         100 MHz oscillator for synchronous supplying of all boards

·         built-in color TFT active display,  800 x 600 resolution

·         internal hard drive,  fast SCSI-2

·         3½" 1.44 Mbyte floppy drive

·         3½" 640 Mbyte magneto-optical drive

·         SCSI interface for external drives

·         Centronics parallel port for printer and plotter

·         V 24 serial port for printer, plotter, mouse

·         external VGA port for high resolution monitor

·         Network port BNC or RJ45

·         Dimensions: RAS model: 35*20*40 cm (13.8” x 8.0” x 15.75” ) 

USA model: 47*20*40cm  (18.5” x 8.0” x 15.75”) 

weight 14 kg (30.9 lbs) plus depending on configuration

·         ASCII keyboard with pointing device. RAS: Touch Pad  USA: Trackball

·         robust, aluminum carrying case with multi-position locking handle

·         Operating voltages: 110 and 220 VAC, 8-32V DC, internal battery backup

·         Power consumption 100 W or more, measurement channel quantity dependant

Trigger Board Specification

The trigger board is used to synchronize measurements with external events. 

·         remote start/stop of measurement, referencing the measurement to external TDC mark

·         data acquisition for a user-definable number of revolutions (1-9999)

·         data acquisition for a user-definable time (50ms - 1000s)

·         referencing to a user-selected speed channel

Data Acquisition Boards

Data acquisition boards may be combined arbitrarily with exception that speed boards with different clock frequencies (100 MHz or 1 GHz) being incompatible.

·          rotec P/N 410  Rotational Speed Board, 100 MHz                                                                                                                                     Single channel.  Input signal TTL level.  32 bit resolution.  Directional recognition. Tooth frequency 0.023 Hz to 390 kHz.  4 MBytes RAM for measurement data.  2 DSPs for pre-conditioning signals.  Assembler-Firmware

·         rotec P/N 412  2-channel Analogue Board, 200 kHz, 16 bit

4 Mytes of RAM for measurement data.  2 DSPs for pre-conditioning signals.  Assembler-Firmware  Input signal  ± 10V, 2 input channels, 16 bit resolution, 200 kHz hardware sampling rate per channel, anti-aliasing filter, programmable amplification (1, 10, 100, 1000), AC/DC coupling,  40 kHz hardware filter  (GIC filter, 6 pole), differential inputs, isolation amplifier, automatic calibration, direct connection of ICP sensors ^® all ICP sensors are fully electrically isolated    (nominal 4 mA supply from board via BNC cable) , digital downsampling, delivers spectra or time histories, real-time capability, without gaps in data records 

·         rotec P/N 414  8-channel Analogue Board, 50 kHz, 16 bit

General

Two operating modes are allowed for:  Offline and Online.

1.        In offline mode, the measurement data are first stored as time histories (continuous data records, no gaps) to on-board SRAM, transferred to hard-disk for further processing upon completion of the measurement.

2.        In online mode the results of evaluations may be displayed in real time during the measurements.   The measurement data are stored as series of spectra with amplitudes and phases.  The compact data storage format allows data acquisition over long periods. 

rotec software has several modules of capability and can be configured for user requirements. Basic configuration includes Windows NT 4.0 Workstation operating system and rotec software for data acquisition, display and output. 

rotec Software provides the following functionality:

* self test of DAQ boards
* configuring of trigger board and DAQ boards
* performing a measurement
* display and save measurement data (as time histories)
* arbitrarily combine displays from different measurements
* graphical grid and cursor
* user definable axis legends, colors and line types
* up to 6 curves in a 2-D graph, up to 4 different y-axes
* combination of up to 4 graphs on a page
* pre-designed page layouts, editor for modifying the layouts
* automatic sorting of variables user-selectable fonts, fonts size and color
* data conversion

 

Measurement Sequencing Capabilities

Measurements may be performed either manually or automatically.  Results of evaluations may be displayed immediately following a measurement.  Both the raw measurement data and the results of evaluations may be saved.  The complete measurement can be remotely sequenced.  An online display of measurement curves during the measurement is provided for. 

 

 

Defining measurement sequence * number of measurements from 1 to 9999 * delay between individual measurements from 0 secs to 2 hours Saving measurement-data sets * no saving * saving with automatic or manual assignment of commentary texts
Defining evaluations * no evaluation * carrying-out required evaluations with display, saving or output of graphics

 

Configuring Measurement Channels

System configurations can be saved and subsequently re-activated.  They contain all details on hardware setups, triggering conditions, display during the measurement and the evaluations following measurement completion. 

For rotational speed channels the number of teeth, divider for number of teeth (when using high line counts), directional recognition and description of test point need to be specified.

Analogue channel include selection of differential or current source inputs, AC or DC coupling, low pass filter on or bypass, hardware gain selection, 2 point linearization, engineering units and label.

retire your bandwidth and accuracy problems…  go digital with rotec