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Model VM16FFFA
Fixed Frequency Filter with
16-Channel Selectable Gain VME Board
Description
Frequency Devices' Model VM16FFFA comprises a
family of VMEbus filter/amplifier boards offering
sixteen channels of linear analog filtering with jumper-
select gain of 1, 10, 100, 200 and 500 in a single width
B-size (6U) VME form factor. Each instrument offers
sixteen differential signal inputs through a shielded
front panel connector that provides signal buffering,
gain setting, and fixed frequency filtering for each
channel. VM16FFFA boards may be configured with
one of several filters with standard factory set cut-off
frequencies from 0.02 Hz to 100 kHz, and with high- or
low-pass transfer functions allowing user to externally
cascade filters into band-pass configurations. The
boards use the VMEbus for power only.
Features/Benefits:
· A convenient way to provide simultaneous access
to 16 channels of precise filtering and gain in a VME
system.
· Individual I/O offset adjustment for each channel
allows for offset adjustment independent of gain.
· Broad range of transfer characteristics and corner
frequencies are offered to meet a wide range of
applications.
· Low harmonic distortion and wide signal-to-noise
ratio to 16-bit resolution with interchannel crosstalk
<-80 dB.
Signal conditioning applications include: LOW-PASS FILTER OPTIONS
· Engine test and simulation 2-pole D72
4-pole D61, D64, DP64, D74, DP74
· Automotive test cells 6-pole D66, DP66, D76, DP76
· Aerospace, navigation & sonar 8-pole D68, DP68, D78, DP78
HIGH-PASS FILTER OPTIONS
· Laboratory R & D 2-pole D72
· Acoustic and vibration analysis 4-pole D61, D64, D74
6-pole D66, D76
· Satellite & Telecommunications 8-pole D68, D78
· Automatic test equipment (ATE) BAND-PASS FILTER OPTIONS
· Industrial process control 2-pole pair D64BP
4-pole pair D68BP
BAND-REJECT(NOTCH) FILTER OPTIONS
4-pole pair D68BR
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
Model VM16FFFA
Specifications
(@ 25°C and rated Power Input) VME Filter Board
16 CHANNELS OF FIXED FREQUENCY FILTERS AND SELECTABLE GAIN
Analog Input
1. Impedance 1 MW//47pF
2. Input Range ±10V pk. linear
3. Maximum Input ±30V peak, either input
4. Common Mode Rejection 70 dB typ., 60 dB min. @ 60 Hz.
Analog Output
5. Impedance 1 W typ., 10 W max.
6. Linear Operating Range ±10V pk.
7. Channel to Channel Crosstalk <-80 dB @ 20 kHz
8. Maximum Current ±5mA
9. Offset Voltage ±2mV max. trimmable to zero
10. Short Circuit Protection Short to Ground
11. Peak Distortion @ 1 kHz,
Gain of x1 -95 dBc max., D68 w/7.07 Vrms input
12. In-band Spectral Noise, __
Gain of x500 80nV / ÷Hz max., D68 idle channel
Filter Characteristics
13. See Series Specifications D61, D64, D66, D68, D72, D74, D76, D78, D64BP, D68BP, D68BR
Gain
14. Jumper Selectable Steps 1, 10, 100, 200, 500
15. Accuracy ±2%
Power Supply
16. From VME Backplane +5V ± 5%
4.0 A max., outputs unloaded
17. Isolation Analog ground may be isolated from VME and chassis
ground by jumper.
Environmental
18. Operating 0°C to +70°C
19. Storage -25°C to +85°C
20. Humidity 0-95% non-condensing
Mechanical
21. Card Size VMEbus 6U single slot 9.17 x 6.3 inches, (233 x 160 mm)
22. No. of Input Channels 16 Differential - DC coupled
23. No. of Output Channels 16 Single Ended - DC coupled
24. Mating Connectors 62-pin "D", Quantity 2, Input and Bypass
44-pin "D", Quantity 1, Output
25. Weight 1.5 lbs., (0.68 kg.)
Ordering Information
8 or 16 Channels
VM16FFFA-8-Filter Type and fc
e.g. D61L4B-0.10 Hz
D68L8B-100 kHz
D74H4B-96.0 kHz
D78L8L-75 Hz
We hope the information given here will be helpful. The information is based on data and our best knowledge, and we consider the information to be true and accurate. Please read all statements,
recommendations or suggestions herein in conjunction with our conditions of sale which apply to all goods supplied by us. We assume no responsibility for the use of these statements,
recommendations or suggestions, nor do we intend them as a recommendation for any use which would infringe any patent or copyright. PR-VM16FFFA-02
2
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de