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V490
16-CHANNEL
VME
MULTI-RANGE
DIGITIZER
Technical Manual
July 18, 2019
2
Copyright © Highland Technology
650 Potrero Avenue, San Francisco, CA 94110
Phone 415-551-1700 • Fax 415-551-5129
www.highlandtechnology.com
NOTICE
HIGHLAND TECHNOLOGY, INC. PROVIDES THIS PUBLICATION “AS IS”
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
(Disclaimer of expressed or implied warranties in certain transactions is not
allowed in some states. Therefore, the above statement may not apply to you.)
This manual may contain technical inaccuracies and/or typographical errors.
Changes are periodically made to this manual which are incorporated in later
editions. Highland Technology, Inc. may make changes and improvements to the
product(s) and/or programs described in this publication at any time without notice.
The V490 has finite failure rates associated with its hardware, firmware, design,
and documentation. Do not use the product in applications where a failure or
defect in the instrument may result in injury, loss of life, or property damage.
IN NO EVENT WILL HIGHLAND TECHNOLOGY, INC. BE LIABLE FOR
DAMAGES, INCLUDING LOST PROFITS, LOST SAVINGS OR OTHER
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
OR INABILITY TO USE SUCH PRODUCT, EVEN IF HIGHLAND TECHNOLOGY,
INC. OR AN APPROVED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
3
Table of Contents
1.Introduction....................................................................................................................5
2.Specifications: V490 Analog Input Module ..................................................................6
3.Overview........................................................................................................................8
3.1Channel Circuits......................................................................................................8
3.2Signal Processing.....................................................................................................9
4.Connectors and Installation..........................................................................................11
4.1Address DIP Switches...........................................................................................11
4.2Installation.............................................................................................................12
4.3D25 Input Connectors ...........................................................................................13
4.4D9 Calibration Connector......................................................................................14
4.5SMB Trigger Connector........................................................................................14
5.Operation......................................................................................................................16
5.1LEDs......................................................................................................................16
5.2Powerup Defaults ..................................................................................................16
5.3Quick Start.............................................................................................................17
6.VME Registers.............................................................................................................19
6.1VME Register Map ...............................................................................................20
6.2Module Overhead Registers..................................................................................27
6.3RELAYS Registers................................................................................................27
6.4ULED - User LED Control ...................................................................................28
6.5MODE - Calibration Bus Control .........................................................................28
6.6CALID, YCAL, DCAL - Calibration Status Registers.........................................29
6.7BIST Registers.......................................................................................................29
6.8MACRO, PARAMx - Macro Controls..................................................................30
6.9FZAP - FIFO Clear Register .................................................................................30
6.10VMETRIG - VME Trigger Register..................................................................31
6.11TRIGGER, BOUNCE, M - Global Trigger Controls........................................31
6.12CHER - Channel Setup Error Flags...................................................................31
6.13Channel Registers..............................................................................................32
6.13.1Channel Control Register...............................................................................32
6.13.2Filter Control Register ...................................................................................33
6.13.3FIFO Status Register......................................................................................35
6.13.4FIFO Divisor Register....................................................................................35
6.13.5Channel Realtime Data Registers...................................................................36
6.13.6Channel FIFO Data Registers ........................................................................36
6.14Realtime Considerations....................................................................................37
7.BIST.............................................................................................................................38
7.1Full BIST...............................................................................................................38
7.2Single-channel Self-Test .......................................................................................39
7.3Background BIST MUX function.........................................................................41
7.4Power Supply BIST...............................................................................................43
8.Local and Global Triggering........................................................................................44
9.Typical Performance....................................................................................................47
9.1Analog Filter..........................................................................................................47
9.2Digital Filters.........................................................................................................48
4
9.3Interpolation ..........................................................................................................50
9.4Noise Performance ................................................................................................52
10.Versions ....................................................................................................................53
11.Customization ...........................................................................................................53
12.Hardware and Firmware Revision History ...............................................................53
12.1Hardware Revision History ...............................................................................53
12.2Firmware Revision History................................................................................53
13.Accessories................................................................................................................54
5
1.
Introduction
This is the manual for the V490, a 16-channel fast analog-to-digital converter VME
module.
Features of the V490 include:
16 channels of differential analog input acquisition. Each channel is
independently programmable for input range, sample rate, operating
modes, and digital lowpass filtering.
Provides continuous, realtime measurement and simultaneously emulates
classic filtered, triggered ADC modes.
Input ranges from ± 10.24 mV to ± 40.96 volts with 16-bit resolution.
Common-mode rejection 100 dB typ, ± 10 volt common-mode range.
Overload protected to ± 250 volts on all ranges
ADC per channel with 500 Ks/s sample rate
Analog+DSP filter modes from 1 Hz to 100 KHz
4K sample FIFO and trigger interpolator per channel provide nanosecond
external-trigger accuracy.
FIFO input sample rate is programmable with internal, VME, or external
triggering. Unlimited numbers of modules may be simultaneously triggered.
No realtime handshaking is required. Once channel parameters are set up,
measurements appear in dual-port memory registers with VMEbus-speed
access.
Separate test connector supports in-crate calibration check.
Clearly labeled dipswitches set VME address; no jumpers, headers, or
trimpots.
Optional built-in self-test (BIST)
6
2.
Specifications: V490 Analog Input Module
FUNCTION 16-channel differential analog-to-digital converter
DEVICE TYPE 16-bit VME register-based slave: A24:A16:D16:D32;
Implements 256 16-bit registers at switch selectable
addresses in the VME 16 or 24 bit addressing spaces
RANGES Programmable per channel
±10.24 mV ± 40.96 mV ± 160 mV ± 640 mV
± 2.56 V ± 10.24 V ± 40.96 V
RESOLUTION 16 bits, 0.313 μV on 10.24 mV range
INPUT IMPEDANCE > 500 K to ground, each differential input
ACCURACY ± 0.05% of range ± 20 μV ± 5 μV/°C
CMRR 100 dB typical on 10 mV range to 60 dB typical on 40 V
range
CM range ± 10 V, ± 140 V on 10 and 40 V ranges
SAMPLE RATE 500 Ks/s
FIFO path has programmable trigger rate
FILTERING Analog, 80 KHz 5-pole pre-ADC lowpass
Digital, 1 Hz to 50 KHz, 8-pole Bessel or Butterworth
PROTECTION ± 250 volts either input to ground
OPERATING
TEMPERATURE
0 to 60°C; extended MIL/COTS ranges available
CALIBRATION
INTERVAL
One year
POWER Standard VME supplies:
+ 5 volts, 0.8 amp max
+12 volts, 250 mA max
-12 volts, 250 mA max
7
CONNECTORS Two D25 female, each 8 channels
One D9 male analog test
One SMB trigger i/o
INDICATORS LEDs indicate VME access, CPU activity, error conditions
Additional LED is user programmable
PACKAGING 6U single-wide VME module
CONFORMANCE ANSI/VITA 1-1994 (R2002) VME bus spec; does not
support byte writes
Bandwidth Specifications:
RN Code Range Bandwidth ( -3dB) Slew Rate Limit
0 ± 10.24 mV 9 KHz 0.58 V/ms
1 ± 40.96 mV 30 KHz 7.8 V/ms
2 ± 160 mV 80 KHz 71 V/ms
3 ± 640 mV 80 KHz 330 V/ms
4 ± 2.56 V 80 KHz 900 V/ms
5 ± 10.24 V 80 KHz 5.2 V/us
6 ± 40.96 V 80 KHz 14 V/us
8
3.
Overview
The V490 includes 16 independent differential-input analog-to-digital converters.
3.1
Channel Circuits
Each channel includes
BIST/CAL relay
Input protection
Input attenuator
Variable-gain differential amplifier
100 KHz analog anti-aliasing lowpass filter
16-bit A/D converter
Digital signal processing
9
3.2
Signal Processing
In the standard V490, all sixteen ADCs are triggered at a constant 500 KHz rate.
Each resulting data stream is digitally lowpass filtered and the result posted to a
"realtime" VME register at the 500 KHz rate. Users may read this register at any
time.
An alternate path for ADC data provides a separate digital lowpass filter, a
programmable sample rate clock, trigger interpolator, and a 4K sample FIFO
memory with its own VME interface.
Signal Processing
Filter types and bandwidths are programmable on a per-channel basis, with filter
responses available from 1 Hz to 100 KHz. The combination of pre-ADC analog
filtering, constant 500 KHz digitizing, and programmable digital filtering allows
essentially alias-free data acquisition.
The output of Filter A is immediately available to the VME interface, simulating an
ADC that receives a lowpass filtered analog input and is triggered the instant that it
is read by VME.
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