Compact 16 channel system Programmable Gain and Frequency RS232 ASCII Text based Computer control Windows™ Driver Range of filter responses and frequencies Programmable Gain to +58dB (x800) Designed for portable use DC Power input Optional IEPE transducer supply Systems from 0.2 Hz - 255 500 Hz   RackMaster pdf format data sheet (73 KB)   Order Section

The Kemo RackMaster Series of filter systems, are compact filter amplifiers, in a range of rugged cases suitable for portable or laboratory filter/amplification tasks. The programmable systems are controlled by an RS232 text based interface, using the Kemo FICL control language. Windows drivers are available. RackMaster systems have controllable inputs, AC / DC coupling and filter bypass set by computer, and single ended / differential / IEPE inputs set by front panel switches.
Input gain is computer controlled between -6 dB (x0.25) to +58 dB (x800), to reduce noise unused channels can be grounded. Filter frequencies are available from 0.2 Hz, to 255 000Hz in a range of units, each with 255 filter steps. RackMasters use the Kemo 1600 filter modules.
RackMasters can also be made in fixed or manually set versions. Some are used for applications where the filter is 'hard set' in the laboratory and then taken on site pre-set ready to use. Others have been made for use in a production type environment, where the filter is set and can only be changed by authorised people.

Summary Specification

Channels	1 - 16
Control	RS 232 FICL, Kemo Windows driver
Frequency	0.2 Hz - 255 kHz
Gain	-12 to +58 dB
Filters	1600 or 1600W filter modules
Filter Responses	Defined by filter modules
Input Coupling	AC / DC / IEPE
IEPE	Yes 4mA 20V
Size	1U 19"
Power	9 - 30 V DC, with AC 'power brick'  See notes on DC power

Programmable Frequency and Gain
The RackMaster uses Kemo's 1600 Series Filter Modules, offering exceptional analogue performance in a small volume. Each 1600 filter module can be programmed over a 255:1 range,1792:1 for the 1600W filter modules. Cut-off frequencies from 0.2 Hz to 255 kHz are available as standard, with others available to special order. Please contact us with your requirements.
The filter modules plug into the RackMaster, so should you wish to change filter response or frequency in the future this is possible.
The RackMaster has 3 programmable gain ranges.

Frequency	Gain
0.2 - 51 Hz 1 -255 Hz 2 -510 Hz 5 - 1 275 Hz 10 - 2 550 Hz 20 - 5 100 Hz 50 - 12 750 Hz 100 - 25 500Hz 200 - 51 000 Hz 500 - 127 500 Hz 1 kHz - 255 kHz Specials	Gain Range Gain Steps 0.25 - 7.75 (-12 to 17.7dB)   32 steps of x0.25 5 - 80 (14 to 38 dB)  16 steps of x 5 50 - 800 (34 to 58 dB)  16 steps of x 50

Control

RackMasters are controlled by RS232 interface, using the Kemo FICL text based control language, or a supplied Windows driver.  FICL is a text based command set, very easy to understand and program, the filter settings can be controlled by any device with an RS232 interface. Some of our customers use PDA's to control their filters. Programming is also very easy using the FICL commands. e.g.:   FREQ 1,500  Sets filter channel 1 to 500 Hz. The Kemo Windows driver for the RackMasters has features to aid the traceability of the measurement settings. Once a set of commands are set to the RackMaster, the driver then interrogates each channel of the RackMaster, and saves the results as a text file. This gives a record of the actual filter settings, these files can be stored and used as part of a measurement control system. A typical screen is shown. A table is created and then sent to the RackMaster, channels 2 and 3 have data to send, channels 5 and 6 have been sent data, which the driver corrected to suit the available filter settings, all other channels are set.   RackMaster pdf format data sheet (73 KB)

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