Analogic DBS 8700 Instructions for use

[phone] | [email protected] | artisantg.com
-~
ARTISAN
®
~I
TECHNOLOGY
GROUP
Your definitive source
for
quality
pre-owned
equipment.
Artisan Technology
Group
Full-service,
independent
repair
center
with
experienced
engineers
and
technicians
on staff.
We
buy
your
excess,
underutilized,
and
idle
equipment
along
with
credit
for
buybacks
and
trade-ins
.
Custom
engineering
so
your
equipment
works
exactly as
you
specify.
•
Critical
and
expedited
services
•
Leasing
/
Rentals/
Demos
• In
stock/
Ready-to-ship
•
!TAR-certified
secure
asset
solutions
Expert
team
ITrust
guarantee
I
100%
satisfaction
All
tr
ademarks,
br
a
nd
names, a
nd
br
a
nd
s a
pp
earing here
in
are
th
e property of
th
e
ir
r
es
pecti
ve
ow
ner
s.
Find the Analogic DBS8700-B10 at our website: Click HERE

Hardware User's Manual
I
-- ==-I
en
bus
DBS 8700/8701
VMEIVXI Data Acquisition System
The world ~esoun:;
for P~cisbnSignal Technology
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

4 Programming
...................................
4.1 PROGRAMMINGOVERVIEW
4.2 DEFAULTDEVICE CONFIGURATION ......................
4.3 DRIVER FUNCTION DESCRIPTIONS .......................
4.3.1 OPEN(DEV. FLAG) .......................................
4.3.2 CLOSE (FID) .................................................
................... 4.3.3 WRITE (FID. BUFFER. COUNT)
.....................
4.3.4 READ (FID. BUFFER.COUNT)
.................. 4.3.5
IOCTL(FID. CMD. DATA. FLAG)
4.3.5.1 RESET ..........................................
4.3.5.2 RATE-DIVISOR ...........................
4.3.5.3 CLOCK-SOURCE ........................
.............................
4.3.5.4 START-MODE
4.3.5.5 RUN-AD-DIAGS ..........................
4.3.5.6 GET-DIAG-ERROR .....................
4.3.5.7 THRESHOLD ................................
4.3.5.8 TRIGGER-POLARITY ..................
4.3.5.9 READ-SRAM ................................
4.3.5.10 TIMEOUT ......................................
4.3.5.11 GET-ERROR ................................
4.3.5.1 2 PRE-POST-TRIGGER ................
4.3.5.13 THRESHOLD-TRIG .....................
4.3.5.14 PRE-TRIG-BUF-SZ ....................
4.3.5.1 5 SET-SIGNAL-TYPE ....................
4.3.5.1 6 READ-REG .................................
4.3.5.17 WRITE-REG ................................
4.4 ERROR HANDLING ...................................................
4.5 DATA ACQUISITION EXAMPLES .............................
4.5.1 SimpleAcquisition .........................................
4.5.2 PreIPostDataAcquisition ..............................
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Warranty
Analogicwarrants only tothe original purchaserthatthis product,as purchasedfrom Analogic
or anAnalogic distributor or dealer,will conformto the written specificationsfor a periodof one
year from the date of purchase. Ifthe product fails to conformto these warranties, Analogic,
as itssole and exclusive liability hereunder,will repairor replacethe productand/or its
componentswithina reasonableperiodof time
if the productis returnedto Analogic's facility at
Peabody,
MA, within the warranty period as expressedabove. These warranties are made
uponthe express condition that:
a. The purchaserpromptlynotifyAnalogic inwritingof any non-conformitywith the above
warranty including a detailed explanationof the allegeddeficiencies.
b. The productis returnedto Analogic at the buyer'sexpenseonly after obtainingthe proper
authorizationfrom Analogic.
c. When the productis returnedfor repair,a copy of the original bill of sale or invoiceissent
withthe product.
d. Analogicwill not be liablefor any incidentalor consequential damages.
e. Inthe opinion of Analogic uponinspection,the product has not been misused, altered, or
damaged dueto abnormalhandlingand/or operation.
f. Repairsto the product and/or its components have not beenmadeby anyone other than
Analogic or one of its authorized repairagents.
g. The producthas not beenmodified, altered,
or changedinany manner by anyone other
thanAnalogic or one of itsauthorizedrepair agents.
THISWARRANTY EXCLUDESALL OTHER WARRANTIES, WHETHER EXPRESSED OR
IMPLIED,ORALOR WRITTEN, INCLUDING WITHOUT LIMITATIONWARRANTIES OF
MERCHANTABILITYAND/OR FITNESS FOR A PARTICULAR PURPOSE.
Noterm, condition, understandingor agreement purportingto modifythe terms of this warranty
shallhave any legaleffectunless made inwritingandsigned by an authorized officer of
Analogic and the purchaser.
Ill
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

5.2.6 Sampling Rate Select Register
(Baseaddress
+ 000AH) ...............................
5.2.7 Threshold Register
(Baseaddress
+ 001OH) ................................
........ 5.2.8
FIFO Register (Baseaddress + 001 2H)
5.2.9 AM9516 DMAController (DMAC) Pointer
................. Register (Baseaddress + 000CH)
5.2.10 AM951
6 DMAController (DMAC) Data
Register (Baseaddress
+ 000EH) .................
5.3 DMA OPERATIONS ...................................................
............................. 5.3.1 DMA Modesof Operation
5.3.2 DMAAddress Modifiers
.................................
5.4 INTERRUPTOPERATIONS .......................................
5.5 AM9516A PROGRAMMINGOVERVIEW ...................
5.5.1 Registers ........................................................
5.5.1.1 Chip-LevelRegisters
......... ; ..........
5.5.1.2 Channel-Level Registers ..............
5.5.2 Commands ....................................................
......................................................... 5.5.3 Chaining
5.5.4 Register Description
.......................................
5.5.4.1 Master Mode Register ..................
5.5.4.2 Command Register .......................
5.5.4.3 ChainControl Register ..................
5.5.4.4 Channel Mode Register ................
5.5.4.5 CurrentAddress Registers,A&B ..
5.5.4.6 BaseAddress Registers,A&B ......
5.5.4.7 Current Operation Count
Registers
.......................................
5.5.4.8 Base Operation Count ..................
5.5.4.9 Status Register ...................... ....
5.5.4.1 0 InterruptSave Register .................
5.5.4.11 ChainAddress Register ................
5.5.4.12 Chain ControlRegister ..................
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Contents
1 Introduction
1.1 SCOPEOF MANUAL ................................................. 1-1
1.2 PRODUCTDESCRIPTION
........................................ 1-1
1.3 TECHNICAL SUPPORT
............................................. 1-3
Hardware Installation
2.1 UNPACKING ..............................................................
................................
2.2 HARDWARECONFIGURATION
.......................................
2.2.1 VME SlaveAddress
2.2.2 Internal/ExternalClock
...................................
2.2.3 InternalIExternalTrigger ................................
2.2.4 DASDataOutput Format ...............................
2.2.5 VME Interrupt .................................................
2.2.6 TTLTRG Jumpers ..........................................
.........................................
2.2.7 RemoteTriggering
......................................
2.2.8 AnalogSignal Guard
.......................................
2.3 EXTERNALSIGNALINPUT
...............................................
2.3.1 Analog Signals
2.3.2 DigitalSignals
................................................
2.4 VMEBUS BACKPLANECONNECTIONS ..................
........... 2.4.1 BusGrant InloutBackplaneJumpers
2.4.2 IACKINIIACKOUTBackplaneJumper
...........
3 Software Installation
3.1 INTRODUCTION ........................................................ 3-1
.................................. 3.2 INSTALLATIONPROCEDURE 3-2
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

List of Figures
Figure Page
.................................... 2-1 DBS 8701Jumper Selections 2-2
2-2 EXT TRIGvs . EXTSTARTTiming ............................ 2-8
................................................
3-1 Typical Directory Tree 3-1
..................................
5-1 DASFunctionalBlock Diagram 5-2
.............................................
5-3 ControlRegisterFormat 5-7
5-2 DeviceType RegisterFormat
.................................... 5-7
..............................................
5-4 Status Register Format 5-8
....................
5-5 Sequence RAMOffset Register Format 5-8
5-6 Scan Sequence RAMWord-Pair Format
................... 5-9
.......................................
5-7 GainIChannelWord Format 5-10
........................................
5-8 ChannelIPortWord Format 5-11
.....................................
5-9 Single Stage Delay Example 5-13
.........................................
5-1 0 Two Stage Delay Example 5-15
5-11 Three Stage Delay Example
...................................... 5-15
5-12 Single Stage Delay Examplewith S/H
....................... 5-17
.................
5-1 3 Memory DeviceAttribute Register Format 5-18
5-1
4 Sampling RateSelect Register .................................. 5-19
........................................
5-15 ThresholdRegister Format 5-20
...................................
5-1 6 Master Mode RegisterFormat 5-25
5-17 Chain Control Register
............................................... 5-27
.................................
5-18 Channel Mode RegisterFormat 5-27
5-19 Current Address Register(A
& B) Format ................. 5-29
5-20 Status Register Format
........................................... 5-30
..................................
5-21 InterruptSave Register Format 5-31
.................................
5-22 Chain Address RegisterFormat 5-31
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

5 FunctionalDescription
................................................................
5.1 OVERVIEW
...........................................
5.1.1 Analog Front End
................................................
5.1.2 A/D Converter
5.1.3 Control Sequencer .........................................
........................................
5.1.4 VMENXI Interface
.........................
5.1.5 Power-Up Diagnostic Stimuli
5.1.6 DCIDC Converter ...........................................
...........................
5.2 HARDWARE DEVICE REGISTERS
DeviceIdentificationRegister
(Base address
+ 0000H) ................................
DeviceType Register
(Base address
+ 0002H) ................................
Control/StatusRegister
(Base address
+ 0004H) ...............................
Sequence RAM Offset Register
(Base address
+ 0006H) ................................
5.2.4.1 Loadingthe Scan
.............................
Sequence RAM
...................... 5.2.4.2 GainIChannelWord
....................... 5.2.4.3 ChannelIPortWord
5.2.4.4 A Typical Sequence
RAM LoadTable
...........................
5.2.4.5 SRAM Formatfor the DVX
Familyof Multiplexer Cards
..........
5.2.4.6 Order of Scan Restrictions ............
5.2.4.7
Exampleof SingleStageDelay ....
5.2.4.8 Exampleof Two Stage Delay .......
5.2.4.9 Exampleof Three Stage Delay .....
5.2.4.10 Exampleof a SingleStage Delay
with SamplelHold Multiplexer
.......
Memory DeviceAttribute Register
(Base address
+ 0008H) ...............................
vii
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 8700/8701 Hardware User's Manual
Eight shielded, differential input ports are provided with both voltage
and current protection. The DAS is directly expandable
to 256
channelsusing the DVX family of multiplexer boards. The input port
signals are multiplexed via an instrumentation amplifier (IA) and a
programmable gain amplifier (PGA) with four software selectable
gains (1,2,4 and
8) and then fed into a 400 kHz, 16-bit sampling A/
D converter. The order of channelsin the scan, the selected gain for
each channel, the selected channel for data-dependent triggering as
well as the sampling rate are user programmable.
The converted data is temporarily stored in a 1024word deep FIFO.
When the FIFO is half full, it signals the powerful dual-channel on-
board DMA controller to acquire mastership of the bus. Then the
DMA controller executes fast transfers over the VME bus sending
data directly from the FIFO into the bus resident system memory
until the FIFO is empty. The DMA controller automatically reads the
necessary information regarding data set size and memory buffer
areas from the bus resident memory relieving the controlling micro-
processor of monitoring DMA operations.
Three flexible conversion trigger sourcesare available:
Q An internal trigger derived from a precision clock with acquisition
started by either the VMEbus resident host processor or the user
supplied External Start command.
Q A user supplied external trigger with acquisition started by either
the VMEbus resident host processor or the user supplied External
Start command.
Q An internally- or externally-derived trigger with the acquisition
started by the occurrence of a prespecified data dependent event
on a selected channel.
An external precision clock can be fed into the board via the Front
Panel
EXT TRIG BNC connector or ITLTRG line O,1,2or 3. The
'ITLTRG line is program selectable using the Rate Register (See
Section 5).
An external trigger can be fed to the DAS via the Front Panel EXT
START BNC connector or TTLTRG line 4,5,6or 7. The ?TLTRG
line is program selectable using the Rate Register (See Section
5).
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

.......
5.5.5 Simple Exampleof the DMAOperations 5-32
5.5.6 Driver Excerptfor DMA Operations
............... 5-35
6 Specifications
Appendix
............................................
A.1 VMElVXl COMPLIANCE A-1
..........................
A.2 CONNECTOR PINASSIGNMENTS A-1
..........................
A.2.1 Analog Input Connector (Jl) A-1
..............................
A.2.2 VME BusConnector (PI) A-2
........................
A.2.3 VMElVXl BusConnector (P2) A-3
Appendix B
NOTESON DIELECTRICABSORPTION ............................
B-1
List of Tables
Table
................ BaseAddress Jumper SelectionExamples
Offset Binary Format
...................................................
Two's ComplementFormat .........................................
InterruptLevel Selections ...........................................
........................
TTLTRG Jumpersfor Control Signals
Master/SlaveJumper Selections
................................
....................
Analog Signal GuardJumper Selections
Analog Signal Input Connections
................................
......................................................
DASUNlX Drivers
.........................
Sequence RAM LoadTable Example
DMAC Registers
.........................................................
DAS Commands .........................................................
Page
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 8700/8701 Hardware User's Manual
Upon contacting the Customer Service Office, the Service Coordina-
tor will provide you with the following:
Customer service order number (CSO)
Warranty status of the units being returned
Repair charge, if any
The CSO number is your authorization number. Please write this
number on your purchase order and shippinglabel.
Send all authorized returns to:
Analogic Corporation
8 Centennial Drive
Peabody, MA
01960
Attn: Receiving Dock B.
CSO#
After the material has been returned, you will receive an
acknowledgement copy of the
CSO which will be marked with the
scheduled return date.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Section 1
Introduction
SCOPE OF MANUAL
This manual contains installation and operation information for the
DBS 870018701Data Acquisition System (DAS). The information is
organized into the following sections:
Section 1,Introduction, describes the scope of this manual, the
product, and how to obtain technical support if necessary.
Section
2, Hardware Installation, describes how to modify the
jumper selectable features.
Section
3, Software Installation, details the installation of the driver
on a Sun Microsystems workstation.
Section
4, Programming, contains the definitions of all the driver
callsused to initiate the acquisition of data.
Section
5, FunctionalDescription, is a detailed functional description
of the cards and contains the necessary depth of information should a
user choose to write his own driver.
Section
6, Specifications, contains a detailed list of performance
specifications.
1.2 PRODUCT DESCRlPTlON
The DBS 870018701DAS is a 400 kHz, high resolution, multichan-
nel data acquisition system combining precision measurement and
high throughput in a VXI 'C' size format. Fully compatiblewith the
VME specification Rev. C1and the VXI specifications Rev.
1.4, the
DAS occupies a single slot in a
VME chassis and provides an unpar-
alleled price-performance ratio when used either alone or in combina-
tion with other
VMENXI based boards (multiplexers, filters, digital-
to-analog converters or array processors) in the DBS family of cards.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 870018701 HardwareUser's Manual
Flgure
2-1. DBS870016701 Jumper Selections
VME Interrupt Level
EXT TRIG to TTLTRG Line Control Signals to
J36
Clock
Configuratior
J2 & 53
Remote
Triggering
J37 '
Not Used
TTLTRG Unes
\
signal Guard
J4-J7 & J9-J12
BaseAddress
Format
.m]
Srqq?
Factory Use Only
321
- JX)~~...I
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

lntroductlon
For ease of integration, a fully compatible UNIX (Berkeley 4.2)*
software driver provides a set of high level routines for controlling
the data acquisition.
1.3 TECHNICAL SUPPORT
If this product fails to operate upon arrival, contact your Analogic
dealer or the Measurement and Control Division (MCD) at the
Analogic factory in Peabody,
MA 01960 to arrange for an exchange.
Upon contacting
MCD Order Entry, you will be given a Return
Material Authorization (RMA) number.
To arrange for an exchange, contact MCD Order Entry:
Tel: [phone], Ext. 3840 or 3844
FAX: [phone]
For technical assistance, contact MCD Applications Engineers:
Tel: [phone]
Domestic calls: Ext. 3876
International calls: Ext. 3011 or 3844
FAX: [phone]
To arrange for service, contact the Customer Service Office:
Tel: [phone]
Repairs: Ext. 3612
Parts: Ext. 3614
Before contacting the Customer Service Office, have the following
information ready:
0 Model number
0 Serial number
0 Purchase order number
0 Quantity being returned
0 A detailed description of the malfunction
0 Your "Bill To" and "Ship To" addresses
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 870018701 HardwareUser'sManual
The external trigger signal is connected to the EXT START connec-
tor on the front panel. Touse an external trigger input from the Front
Panel orTTLTRG lines 4,5,6 or
7 (software-controlled selection),
install 53-2 to 53-3.
Also, an external trigger from the Front Panel may be sent out on one
of the TTLTRG lines usingjumpers J38-J45. Refer to Section 2.2.6.
2.2.4 DAS Data Output Format
The output data format can be configured for Binary, Offset Binary
or Two's Complement. The difference between Offset Binary (Table
2-2) andTwo's Complement (Table 2-3) is that the MSB in Offset
Binary isthe complement of the MSB in 2's Complement.
Touse Binary or Offset Binary, install 58-2 to J8-3. Touse Two's
Complement, install J8-1 to 58-2
Table 2-2. Offset Blnary Format
2.2.5 VME Interrupt
Since the DAS requires a minimum of attention from the VME host
processor after the necessary DMA transfer commands have been
issued by the user's application program, there is little need to closely
monitor the acquisition operation. Therefore, the DAS is shipped
with interrupt level
1 selected, meaning that the only interrupt jumper
MSB LSB
1111 1111 1111 1111
1000 0000 0000 0001
1000 0000 0000 0000
0111 1111 1111 1111
0000 0000 0000 0000
Table 2-3. Two's ComplementFormat
Value
+Fullscale
+ 1
Zero
-1
-Full Scale
MSB LSB
0111 1111 1111 1111
0000 0000 0000 0001
0000 0000 0000 0000
1111 1111 1111 1111
1000 0000 0000 0000
Value
+Fullscale
+ 1
Zero
-1
- Full Scale .
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

-
Section 2
Hardware Installation
2.1 UNPACKING
Remove the DBS 8700/8701 Data Acquisition System (DAS) card
from the carton and the anti-static bag, and visually inspect the
assembly for any shippingdamage. Retain the carton and packing.
Should the DAS fail to function properly, contact Analogic Customer
service (see Section
1.3) for return authorization. Any damage
should be reported
to the shipping company.
2.2 HARDWARE CONFIGURATlON
The locations of the hardware jumpers that control the functional
configuration of the board are shown in Figure
2-1. The board is
shipped from the factory in the following configuration.
.......................... BaseAddress = COO0
J4-J7and J9-J12 installed
....................... InternalPrecisionClock
J36 installedfrom 2-3
...........................
ExternalTrigger Input J3 installedfrom 2-3
......................
Two'sComplementData J8 installedfrom 1-2
InterruptLevel 1
................................... J32 installed
Analog Ground Signal Guards
............. J200 installed 2-3
ESTBonTTLTRG7 .............................. J21 installed1-2
EXTSHLon lTLTRG4
......................... J16 installed2-3
EXTSH onlTLTRG5 ...........................
J15 installed1-2
The VXI specification requires a lock-out key on the front panel of a
card that uses the
A & C rows of pins on connector P2. Thiskey
prevents installing the DAS card adjacent to an incompatible
VXI
card that could cause electrical damage to the DAS. Since this DAS
uses rows A
& C on P2, it could be damaged if the backplane pro-
vides conflicting connections to other cards from these pins.
CAUTION: Improper connectlonof slgnals on the P2 connector could
cause damage to the
DAS card.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 8700/8701 HardwareUser's Manual
Remote Triggering
In those installations where there are two to four DAS cards in the
same chassis, you may wish to assign one card as "master" to trigger
all the other
DAS cards. In this case, the backplane of the applicable
system must conform
to the VXlbus specifications for interconnect-
ing wiring between card slots.
CAUTION: Fallure to comply wlth the VXlbuselectricalspeciflcatlons
may result In damage to, or unrellableoperation
of, the
DAS (and the companion cards).
In this case, the "master" trigger card should be configured to gener-
ate the Remote Trigger (REMTRG) pulse while the "slave" card(s)
should be configured to receive it. The REMTRG signal must then
be jumpered to one of the lTLTRGlines on the
P2 connector (see
Table 2-5). Jumpers selections on the Master and Slave card(s) are
defined in Table 2-6.
Table 2-6. Master/Slave Jumper Selections
Jumper Master Slave(s)
J21 - J28 2-3 2-3
2.2.8 Analog Signal Guard
The analog signal guards (shields) for all channels are connected
together tojumpers 5200
& 5201. Refer to Table 2-7 and Figure 2-1
forjumper selections.
Table 2-7. Analoa Sianal Guard Jum~erSelections
Jumper
Selection
J201-1 to J201 - 2
J200-1
to J200-2
J200-2
to 3200 - 3
Shleld Connection
Digitalgroundfrom
VME backplane
Chassis groundvia front panelcard cage screws
Analog ground
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Installation
2.2.1 VME SlaveAddress
The Base Address of the board is determined by the installation of
jumpers J4-J7 and J9-J12. The examples given in Table 2-1 illustrate
the base address range. Any 64 byte block of addresses from FFCO
thru
COO0 can be configured.
2.2.2 Internal/External Clock
Table2-1. BaseAddress Jumper Selection Examples
The DAS provides a precision 3.6864 MHz clock (*0.001%) for use
as the sampling clock. However, you may wish to use an external
precision clock and divide it down to the desired sample rate. The
external clock signal is connected to the
EXT TRIG connector on the
front panel. SeeSection 2.3.2.
Address
FFCO
FF80
FFOO
FEOO
FCOO
F800
FOOO
EOOO
COO0
Touse an external precision clock from the Front Panel EXT TRIG
input, install 536-1 to J36-2
J9 J10 J12 Jll J7 56 J5 54
OUT OUT OUT OUT OUT OUT OUT OUT
OUT OUT OUT OUT OUT OUT OUT
IN
OUT OUT OUT OUT OUT OUT IN IN
OUT OUT OUT OUT OUT IN IN IN
OUT OUT OUT OUT IN IN IN IN
OUT OUT OUT IN IN IN IN IN
OUT OUT IN IN IN IN IN IN
OUTIN IN IN IN IN IN IN
IN IN IN IN IN IN IN IN
Touse the on-board precision clock or a precision clock input from
TTLTRG lines 0, 1, 2 or 3 (software-controlled selection), install J36-
2 to 536-3
2.2.3 Internal/External Trigger
The user may wish to trigger the conversion from an external source
rather than use either of the options above. The external trigger
initiates the actual sampling of the input analog signal(s) but the
internal precision clock is required to run the internal
A/D controls.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

DBS 8700/8701 HardwareUser'sManual
The External Trigger, when enabled by its Control Register enable
bit, startsor stops the ADC sampling. When the internal precision
clock is used, the External Trigger is synchronized with the precision
clock.
If the External Trigger is used to trigger the ADC, it is up to
the user
to synchronize the External Trigger with the External Clock.
These two signals are independent of one another such that the trigger
can be used either with the internal precision clock (internally
synchronized) or the external clock (user synchronized). Figure
2-2
depicts the necessary user synchronization of the ExtStart and the
E;. Trigger, when both are provided by the user.
Figure 2-2. EXT TRlG vs. EXT START Timing
Minimum P&ocl= Zi; , , \:\
,
External Clock
(EXT TRIG
connector)
I
ExternalTrigger
EXT START
connector
- - - ---- - Run
2.4 VMEBUSBACKPLANE CONNECTIONS
2.4.1 BUS Grant In/Out BackplaneJumpers
The DAS uses only bus request BR3* for requesting VMEbus
ownership. Therefore, the BG3IN-BG30UT bypass jumper (or
switch) located in the backplane for the slot that the DAS occupies
must be removed (open).
The bus grants BGOIN, BGlIN, BG2IN, are shorted through to the
BGOOUT, BGlOUT, BG20UT pins on the
P1 connector.
2.4.2 IACKINAACKOUTBackplaneJumper
The DAS requires that the IACKIN-IACKOUT jumper (or switch)
located in the backplane of the slot that the DAS occupies must be
removed (open).
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

lnstallatlon
installed is 332. To assign the DAS to another interrupt level, the
BREQ-INT
PAL (2-14) must be reprogrammed for the desired level
and the interrupt jumper
(J32) must be moved to the new level. A
copy of the BREQ-INT PALequations is included with the Operat-
ing System Driver. Jumper selections are listed in Table
2-4.
2.2.6 77LTRGJumpers
When other cards in the DBS family are used in conjunction with the
DAS, the backplane of the applicable system must conform to the
VXlbus specifications for interconnecting wiring between card dots.
Table 2-4. Interrupt Level Selections
-- -
CAUTION: The DAS uses rows A & C on the PZ connector. Improper
connectlon
of signals on the PZ connector could cause
damageto the DAS card. Fallure to comply
with the Wlbus
electrical speclflcatlons may result In damage to, or
unreliable operation
of, the DAS (and companion cards).
If a companion card is used with the DAS, TTLTRGjumpers are
required to pass high speed control signals to the other cards.
An
extensive jumper field has been provided in conformance to the VXI
bus specification. The signals that can be connected to the TTLTRG
lines are listed in Table
2-5.
7
J35
Table 2-5. TLTRGJumpers for Control Signals
6
J34
TTLTRG- Jumper Conn
REMTRG
Interrupt level
Jumper Installed
RemoteTrigger
11 2-3 1 2-3 1 2-3 1 2-3
J30
J21 J22 J23 J24
E::nal Strobe 1 1:; 1 1:; 1 1:; 1 1:;
EXTSHL J13 J14 J15 J16
ExternalS/H (LO)
EXTSH J13 J14 J15 J16
415
J29
1 J33
J32
1-2
ExternalS/H(HI) 1-2 1-2 1-2
EXTRG
J45 J44 J43 J42
123
J31
ExternalTrigger
(1 1-2 1 1-2 1 1-2 1 1-2
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com