VTI Instruments VM3608A User manual
bus
VM3608A/
VM3616A
DIGITAL-TO-ANALOG CONVERTER
USER’S
MANUAL
P/N: 82-0034-000
Released June 9th, 2016
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509
(949) 955-1894
VTI Instruments Corp.
2
www.vtiinstruments.com
VM3608A/3616A Preface 3
TABLE OF CONTENTS
INTRODUCITON
TABLE OF CONTENTS.................................................................................................................................................3
Certification .........................................................................................................................................................7
Warranty...............................................................................................................................................................7
Limitation of Warranty.........................................................................................................................................7
Restricted Rights Legend .....................................................................................................................................7
DECLARATION OF CONFORMITY ................................................................................................................................8
GENERAL SAFETY INSTRUCTIONS..............................................................................................................................9
Terms and Symbols..............................................................................................................................................9
Warnings..............................................................................................................................................................9
SUPPORT RESOURCES ..............................................................................................................................................11
SECTION 1 ...................................................................................................................................................................13
INTRODUCTION........................................................................................................................................................13
Introduction........................................................................................................................................................13
Description.........................................................................................................................................................14
Data Modes........................................................................................................................................................15
Calibration..........................................................................................................................................................15
VM3608A/3616A Specifications.......................................................................................................................16
SECTION 2 ...................................................................................................................................................................19
PREPARATION FOR USE............................................................................................................................................19
Installation..........................................................................................................................................................19
Calculating System Power and Cooling Requirements ......................................................................................19
Setting the Chassis Backplane Jumpers..............................................................................................................19
Setting the Logical Address ...............................................................................................................................20
Front Panel Interface Wiring..............................................................................................................................20
Mating Connectors.............................................................................................................................................22
SECTION 3 ...................................................................................................................................................................23
PROGRAMMING........................................................................................................................................................23
Introduction........................................................................................................................................................23
Notation..............................................................................................................................................................24
Data Setup and Scan Lists..................................................................................................................................25
Normal Mode ................................................................................................................................................25
FIFO Mode....................................................................................................................................................25
Arbitrary Waveform Generator Mode...........................................................................................................25
Scan Mode.....................................................................................................................................................25
Examples of SCPI Commands ...........................................................................................................................26
CALibration:COUNt? ...................................................................................................................................26
CALibration:DATA ......................................................................................................................................27
CALibration:GAIN........................................................................................................................................28
CALibration:SECure:CODE .........................................................................................................................29
CALibration:SECure:STATe ........................................................................................................................30
CALibration:STORe......................................................................................................................................31
CALibration:STORe:AUTO .........................................................................................................................32
CALibration:ZERO.......................................................................................................................................33
FORMat.........................................................................................................................................................34
MEMory:SETup............................................................................................................................................35
SCAN............................................................................................................................................................36
SCAN:LIMit..................................................................................................................................................37
SCAN:TABLe...............................................................................................................................................38
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4 VM3608A/3616A Preface
SCAN:TABLe:LOCation..............................................................................................................................39
SOURce:VOLTage:DATA ...........................................................................................................................40
SOURce:VOLTage:LEVel............................................................................................................................41
SOURce:VOLTage:SETup ...........................................................................................................................42
TRIGger:SLOPe............................................................................................................................................43
TRIGger:SOURce .........................................................................................................................................44
APPLICATION EXAMPLES .........................................................................................................................................45
REGISTER ACCESS ...................................................................................................................................................47
Programming the DACs via Register access......................................................................................................47
VXIPLUG&PLAY DRIVER .........................................................................................................................................50
Programming the VM3608A/3616A using VXIplug&play Drivers...................................................................50
Overview............................................................................................................................................................50
Outputting a Single Value..................................................................................................................................50
Outputting from the Scan List............................................................................................................................51
Outputting an Arbitrary Waveform....................................................................................................................51
Outputting Data using FIFO Mode.....................................................................................................................54
VXIPLUG&PLAY DRIVER EXAMPLES .......................................................................................................................56
SECTION 4 ...................................................................................................................................................................61
COMMAND DICTIONARY..........................................................................................................................................61
Introduction........................................................................................................................................................61
Alphabetical Command Listing..........................................................................................................................61
Command Dictionary.........................................................................................................................................66
IEEE 488.2 COMMON COMMANDS..........................................................................................................................67
*CLS ..................................................................................................................................................................67
*ESE ..................................................................................................................................................................68
*ESR? ................................................................................................................................................................69
*IDN?.................................................................................................................................................................70
*OPC..................................................................................................................................................................71
*RST ..................................................................................................................................................................72
*SRE ..................................................................................................................................................................73
*STB? ................................................................................................................................................................74
*TRG..................................................................................................................................................................75
*TST?.................................................................................................................................................................76
*WAI..................................................................................................................................................................77
DEVICE SPECIFIC SCPI COMMANDS ........................................................................................................................78
ABORt ...............................................................................................................................................................78
CALibration:COUNt?........................................................................................................................................79
CALibration:DATA ...........................................................................................................................................80
CALibration:GAIN ............................................................................................................................................81
CALibration:SECure:CODE..............................................................................................................................82
CALibration:SECure:STATe.............................................................................................................................83
CALibration:STORe ..........................................................................................................................................84
CALibration:STORe:AUTO..............................................................................................................................85
CALibration:ZERO............................................................................................................................................86
FORMat .............................................................................................................................................................87
INITiate..............................................................................................................................................................88
MEMory:SETup.................................................................................................................................................89
MEMory:SIZE? .................................................................................................................................................90
OUTPut:TTLTrg................................................................................................................................................91
OUTPut:TTLTrg:SOURce.................................................................................................................................92
SCAN.................................................................................................................................................................93
SCAN OFF.........................................................................................................................................................94
SCAN:LIMit ......................................................................................................................................................95
SCAN:TABLe....................................................................................................................................................96
SCAN:TABLe:LOCation...................................................................................................................................97
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VM3608A/3616A Preface 5
SOURce:MARKer:SYNC:SLOPe .....................................................................................................................98
SOURce:MARKer:SYNC:STATe.....................................................................................................................99
SOURce:MARKer:TRIGger............................................................................................................................100
SOURce:ROSCillator:SLOPe..........................................................................................................................101
SOURce:ROSCillator:SOURce .......................................................................................................................102
SOURce:SEQuence:ADVance.........................................................................................................................103
SOURce:SEQuence:DWELl............................................................................................................................104
SOURce:SEQuence:LENGth...........................................................................................................................105
SOURce:SEQuence:LIST................................................................................................................................106
SOURce:SEQuence:STARt .............................................................................................................................107
SOURce:VOLTage:DATA..............................................................................................................................108
SOURce:VOLTage:FORMat...........................................................................................................................109
SOURce:VOLTage:LEVel...............................................................................................................................110
SOURce:VOLTage:RANGe ............................................................................................................................111
SOURce:VOLTage:SETup..............................................................................................................................112
TRACe:DATA.................................................................................................................................................113
TRACe:DATA:POINt......................................................................................................................................114
TRACe:DEFine................................................................................................................................................115
TRACe:DELete:ALL.......................................................................................................................................116
TRACe:FREE?.................................................................................................................................................117
TRACe:LEVel..................................................................................................................................................118
TRACe:POINts................................................................................................................................................119
TRIGger:IMMediate........................................................................................................................................120
TRIGger:IMMediate:ADVance .......................................................................................................................121
TRIGger:SLOPe...............................................................................................................................................122
TRIGger:SOURce............................................................................................................................................123
TRIGger:TIMer................................................................................................................................................124
REQUIRED SCPI COMMANDS.................................................................................................................................125
STATus:OPERation:CONDition?....................................................................................................................125
STATus:OPERation:ENABle..........................................................................................................................126
STATus:OPERation:EVENt? ..........................................................................................................................127
STATus:PRESet...............................................................................................................................................128
STATus:QUEStionable:CONDition? ..............................................................................................................129
STATus:QUEStionable:ENABle.....................................................................................................................130
STATus:QUEStionable:EVENt.......................................................................................................................131
SYSTem:ERRor?.............................................................................................................................................132
SYSTem:VERSion?.........................................................................................................................................133
INDEX ........................................................................................................................................................................135
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6 VM3608A/3616A Preface
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VM3608A/3616A Preface 7
CERTIFICATION
VXI Technology, Inc. (VTI) certifies that this product met its published specifications at the time of shipment from
the factory. VTI further certifies that its calibration measurements are traceable to the United States National
Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that
organization’s calibration facility, and to the calibration facilities of other International Standards Organization
members.
WARRANTY
The product referred to herein is warranted against defects in material and workmanship for a period of three years
from the receipt date of the product at customer’s facility. The sole and exclusive remedy for breach of any warranty
concerning these goods shall be repair or replacement of defective parts, or a refund of the purchase price, to be
determined at the option of VTI.
For warranty service or repair, this product must be returned to a VTI authorized service center. The product shall be
shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer. However, the buyer shall pay all
shipping charges, duties, and taxes for products returned to VTI from another country.
VTI warrants that its software and firmware designated by VTI for use with a product will execute its programming
when properly installed on that product. VTI does not however warrant that the operation of the product, or software,
or firmware will be uninterrupted or error free.
LIMITATION OF WARRANTY
The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer, buyer-
supplied products or interfacing, unauthorized modification or misuse, operation outside the environmental
specifications for the product, or improper site preparation or maintenance.
VTI shall not be liable for injury to property other than the goods themselves. Other than the limited warranty stated
above, VTI makes no other warranties, express, or implied, with respect to the quality of product beyond the
description of the goods on the face of the contract. VTI specifically disclaims the implied warranties of
merchantability and fitness for a particular purpose.
RESTRICTED RIGHTS LEGEND
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subdivision (b)(3)(ii) of the
Rights in Technical Data and Computer Software clause in DFARS 252.227-7013.
VXI Technology, Inc.
2031 Main Street
Irvine, CA 92614-6509 U.S.A.
VTI Instruments Corp.
8 VM3608A/3616A Preface
DE C L A R A T I O N O F CO N F O R M I T Y
Declaration of Conformity According to EN ISO/IEC 17050-1:2004
MANUFACTURER’S NAME VTI Instruments
MANUFACTURER’S ADDRESS 2031 Main Street
Irvine, California 92614-6509
PRODUCT NAME Digital-to-Analog Converter
MODEL NUMBER(S) VM3608A & VM3616A
PRODUCT OPTIONS All
PRODUCT CONFIGURATIONS All
VTI Instruments (formerly VXI Technology) declares that the aforementioned product conforms
to the requirements of the Low Voltage directive (European Council directive 2014/35/EU, dated
22 July 1993) and the Electromagnetic Compatibility directive (European Council directive
2014/30/EU; generally referred to as the EMC directive). In substantiation, the products were
tested and/or evaluated to the standards shown below:
SAFETY EN61010-1:2010
EMC EN61326-1:2013
EN55011 Class A Group 1
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN61000-4-11
CISPR 22
June 2016
Steve Mauga, QA Manager
www.vtiinstruments.com
VM3608A/3616A Preface 9
GENERAL SAFETY INSTRUCTIONS
Review the following safety precautions to avoid bodily injury and/or damage to the product.
These precautions must be observed during all phases of operation or service of this product.
Failure to comply with these precautions, or with specific warnings elsewhere in this manual,
violates safety standards of design, manufacture, and intended use of the product.
Service should only be performed by qualified personnel.
TERMS AND SYMBOLS
These terms may appear in this manual:
WARNING
Indicates that a procedure or condition may cause bodily injury or death.
CAUTION
Indicates that a procedure or condition could possibly cause damage to
equipment or loss of data.
These symbols may appear on the product:
ATTENTION - Important safety instructions
Frame or chassis ground
Indicates that the product was manufactured after August 13, 2005. This mark is
placed in accordance with EN 50419, Marking of electrical and electronic
equipment in accordance with Article 11(2) of Directive 2002/96/EC (WEEE).
End-of-life product can be returned to VTI by obtaining an RMA number. Fees
for take-back and recycling will apply if not prohibited by national law.
WARNINGS
Follow these precautions to avoid injury or damage to the product:
Use Proper Power Cord
To avoid hazard, only use the power cord specified for this product.
Use Proper Power Source
To avoid electrical overload, electric shock, or fire hazard, do not
use a power source that applies other than the specified voltage.
Use Proper Fuse
To avoid fire hazard, only use the type and rating fuse specified for
this product.
VTI Instruments Corp.
10 VM3608A/3616A Preface
WARNINGS (CONT.)
Avoid Electric Shock
To avoid electric shock or fire hazard, do not operate this product
with the covers removed. Do not connect or disconnect any cable,
probes, test leads, etc. while they are connected to a voltage source.
Remove all power and unplug unit before performing any service.
Service should only be performed by qualified personnel.
Ground the Product
This product is grounded through the grounding conductor of the
power cord. To avoid electric shock, the grounding conductor must
be connected to earth ground.
Operating Conditions
To avoid injury, electric shock or fire hazard:
-
Do not operate in wet or damp conditions.
-
Do not operate in an explosive atmosphere.
-
Operate or store only in specified temperature range.
-
Provide proper clearance for product ventilation to prevent
overheating.
-
DO NOT operate if any damage to this product is suspected.
Product should be inspected or serviced only by qualified
personnel.
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VM3608A/3616A Preface 11
SUPPORT RESOURCES
Support resources for this product are available on the Internet and at VTI Instruments customer
support centers.
VTI Instruments Corp.
World Headquarters
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509
Phone: (949) 955-1894
Fax: (949) 955-3041
VTI Instruments
Cleveland Instrument Division
5425 Warner Road
Suite 13
Valley View, OH 44125
Phone: (216) 447-8950
Fax: (216) 447-8951
AMETEK Instruments Pvt. Ltd. India
4th Floor, Block A,
Divyashree NR Enclave,
EPIP Industrial Area,
Whitefield,
Bangalore –560066 INDIA
Phone: +91 80 6782 3200
Fax: +91 80 6782 3232
Technical Support
Phone: (949) 955-1894
Fax: (949) 955-3041
E-mail: support@vtiinstruments.com
Visit http://www.vtiinstruments.com for worldwide support sites and service plan information.
VTI Instruments Corp.
12 VM3608A/3616A Preface
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VM3608A/3616A Introduction 13
SECTION 1
INTRODUCTION
INTRODUCTION
The VM3608A/3616A provides 8 or 16 independent channels of a digital to analog converter
(DAC) with 16 bits of resolution. Each channel consists of a DAC combined with an output
amplifier. This module is part of the VMIP(VXI Modular Instrumentation Platform) family of
instruments and can be combined with up to two other modules to form a high-density VXIbus
instrument that fully utilizes the capabilities of the VMIP. The instrument uses the message-based
word serial interface for programming and data movement, as well as supporting direct register
access for high-speed data throughput. The VM3608A/3616A command-set conforms to the SCPI
standard for consistency and ease of programming.
The VM3608A/3616A is a member of the VTI VMIP family and is available as an 8 or 16-, 16 or
32- or 24 or 48-channel, singlewide VXIbus instrument. In addition to these three standard
configurations, the VM3608A/3616A may be combined with any of the other members of the
VMIP family to form a customized and highly integrated instrument (see Figure 1-1). This allows
the user to reduce system size and cost by combining the VM3608A/3616A with two other
instrument functions in a singlewide C-size VXIbus module. Figure 1-2 shows the 24- or
48-channel version of the VM3608A/3616A. The 16- or 32-channel version would not have J200
and its associated LEDs and nomenclature, while the 8- or 16-channel version would also eliminate
J202.
V
X
I
B
U
S
I
N
T
E
R
N
A
L
V
M
I
P
B
U
S
VMIP
INTERFACE
VMIP
INSTRUMENT
MODULE #1
VMIP
INSTRUMENT
MODULE #2
VMIP
INSTRUMENT
MODULE #3
FIGURE 1-1: VMIPPLATFORM
VTI Instruments Corp.
14 VM3608A/3616A Introduction
Regardless of whether the VM3608A/3616A is configured with other VM3608A/3616A
modules or with other VMIP modules, each group of 16 channels is treated as an
independent instrument in the VXIbus chassis and, as such, each group has its own FAIL
and ACCESS light.
DESCRIPTION
The VM3608A/3616A instrumentation module provides 8 or 16 independent channels of a
digital to analog converter (DAC) with 16 bits of resolution. Each channel consists of a
DAC combined with an output amplifier. This module is part of the VMIP family of
instruments and can be combined with up to two other modules to form a high-density
VXIbus instrument that fully utilizes the capabilities of the VMIP.
In order to support accelerated testing, the module supports up to 512 predefined setups.
Each setup is numbered and defines the voltage of each DAC on the board. All the voltages
can then be set with a single command.
To further speed up testing, the DAC module supports up to 16 different scan lists, each 512
entries long. The scan list is a predefined sequence of setups that is loaded into the DACs.
The scan list, when enabled, can be incremented through any of the trigger sources outlined
in the following section.
Both the setups and scan lists are loaded into RAM prior to their use.
All the DACs update synchronously and may be triggered to update via one of three
sources:
1. Trigger source from the front panel input. This input is TTL compatible and is edge
sensitive. The unit may be programmed to trigger on either the rising or the falling edge of
this signal.
2. Trigger source from the VXI TTL trigger bus. Any one of the eight TTL trigger bus lines
may be selected as the trigger source. The unit may be programmed to trigger on either the
rising or the falling edge of this signal.
3. Trigger upon receipt of a word serial command. When this mode is selected, the DACs
will convert when a word serial command is received by the instrument.
FIGURE 1-2: FRONT PANEL LAYOUT
bus
FAIL
ACC/
ERR
FAIL
ACC/
ERR
FAIL
ACC/
ERR
J200
J201
J202
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VM3608A/3616A Introduction 15
DATA MODES
Along with static output operation, the VM3608A/3616A provides a FIFO mode where the
selected channels can accept and output a continuous stream of data. The VM3608A/3616A also
offers Arbitrary Waveform Generation (ARB) mode that supports sophisticated looping and
branching to build complex waveforms without the system controller's intervention. The data may
be paced out of the instrument by using either a user-supplied clock or the internal programmable
timer.
CALIBRATION
The calibration constants used to correct the data values are stored in non-volatile memory. These
constants are determined when the instrument is calibrated and can be changed as necessary (such
as during routine calibration cycles or when the user selects a new gain setting and wishes to set
the gain accurately). These constants may also be queried at any time via a word serial query and
altered via a word serial command. All calibration is done using calibration DACs to adjust the
gain and offset of each channel. This eliminates the need for removing covers from the unit and
allows for automated calibration.
VTI Instruments Corp.
16 VM3608A/3616A Introduction
VM3608A/3616A SPECIFICATIONS
GENERAL SPECIFICATIONS
NUMBER OF CHANNELS
VM3608A/3616A-1
VM3608A/3616A-2
VM3608A/3616A-3
16 channels
32 channels
48 channels
OUTPUT RANGES
±20.0 V, 610 µV step, or
±10.0 V, 305 µV step
OUTPUT CURRENT
±50 mA per channel (1.5 A max., total for all channels per C-size VXIbus card)
RESOLUTION
16 bits, 16 bits monotonic
SHORT CIRCUIT
Continuous duration
SLEW RATE
6 V/µs (50 mA load)
SETTLING TIME
10 µs to 0.1% of specified value
VOLTAGE ACCURACY*
10 V Range
20 V Range
3.22 mV
6.44 mV
CONVERSION RATE
100,000 voltage changes/second, normal mode register access, FIFO mode, and ARB mode
100 voltage changes per second, normal mode word serial access
2,000 voltage changes per second, single VM3616A, scan mode
1,000 voltage changes per second, two VM3616As, scan mode
667 voltage changes per second, three VM3616As, scan mode
STATIC MODE UPDATE SOURCES
VXIbus TTL trigger bus 0 - 7
Front panel input, TTL compatible
Updating any selected channel
Word serial command
MEMORY
512 k words, 1 M word optional
FIFO MEMORY
512 k words divided by the number of active channels,
1 M word optional
FIFO CLOCK SOURCE
Any trigger source
ARB (ARBITRARY WAVE FORM)MEMORY
484 k words divided by the number of active channels, 996 k words optional
ARB DATA TRACES
1 to 4096 unique patterns
ARB SEGMENTS
1 to 4096
ARB LOOP COUNTER
1 to 1048575 or Continuous
ARB ADVANCE MODES
Synchronous, waits for the end of the current pattern to advance to the next
Asynchronous, advances immediately to the next pattern upon being triggered
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VM3608A/3616A Introduction 17
VM3608A/3616A SPECIFICATIONS (CONTINUED)
ARB ADVANCE CONDITIONS
Automatic or Triggered
ARB MARKER FUNCTION
Marks the first data in a pattern when enabled. Polarity is software programmable.
ARB MARKER OUTPUT
VXIbus TTL trigger bus 0 - 7
Front panel TTL compatible output
TRIGGER SOURCE
VXIbus TTL trigger bus 0 - 7
Front panel input, TTL compatible
Internal Timer
Word serial command
ADVANCE CLOCK SOURCE
VXIbus TTL trigger bus 0 - 7
Front panel input, TTL compatible
Internal Timer
Word serial command
POWER REQUIREMENTS
VM3608A/3616A-1
VM3608A/3616A-2
VM3608A/3616A-3
+5 V @ 1.04 A, -5.2 V @ 0.15 A, +24 V @ 0.27 A, -24 V @ 0.23 A
+5 V @ 1.34 A, -5.2 V @ 0.25 A, +24 V @ 0.54 A, -24 V @ 0.46 A
+5 V @ 1.64 A, -5.2 V @ 0.35 A, +24 V @ 0.81 A, -24 V @ 0.69 A
* Note: Indicates that values were attained after a 30 minute warm-up.
VTI Instruments Corp.
18 VM3608A/3616A Introduction
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VM3608A/3616A Preparation for Use 19
SECTION 2
PREPARATION FOR USE
INSTALLATION
When the VM3608A/3616A is unpacked from its shipping carton, the contents should include the
following items:
(1) VM3608A/3616A VXIbus module.
(1) VM3608A/3616A Digital to Analog Converter Module User’s Manual (this manual).
All components should be immediately inspected for damage upon receipt of the unit.
Once the VM3608A/3616A is assessed to be in good condition, it may be installed into an
appropriate C-size or D-size VXIbus chassis in any slot other than slot 0. The chassis should be
checked to ensure that it is capable of providing adequate power and cooling for the
VM3608A/3616A. Once the chassis is found adequate, the VM3608A/3616A’s logical address
and the backplane jumpers of the chassis should be configured prior to the VM3608A/3616A’s
installation.
CALCULATING SYSTEM POWER AND COOLING REQUIREMENTS
It is imperative that the chassis provide adequate power and cooling for this module. Referring to
the chassis user’s manual, confirm that the power budget for the system (the chassis and all
modules installed therein) is not exceeded and that the cooling system can provide adequate
airflow at the specified backpressure.
It should be noted that if the chassis cannot provide adequate power to the module, the instrument
may not perform to specification or possibly not operate at all. In addition, if adequate cooling is
not provided, the reliability of the instrument will be jeopardized and permanent damage may
occur. Damage found to have occurred due to inadequate cooling would also void the warranty of
the module.
SETTING THE CHASSIS BACKPLANE JUMPERS
Please refer to the chassis user's manual for further details on setting the backplane jumpers.
VTI Instruments Corp.
20 VM3608A/3616A Preparation for Use
SETTING THE LOGICAL ADDRESS
The logical address of the VM3608A/3616A is set by a single 8-position DIP switch located near
the module’s backplane connectors (this is the only switch on the module). The switch is labeled
with positions 1 through 8 and with an ON position. A switch pushed toward the ON legend will
signify a logic 1; switches pushed away from the ON legend will signify a logic 0. The switch
located at position 1 is the least significant bit while the switch located at position 8 is the most
significant bit. See Figure 2-1 for examples of setting the logical address switch.
SET TO 4
1
ON
2 3 4 5 6 7 8
SET TO 168
1 2 3 4 5 6 7 8
SET TO 8
1
ON
2345678
SET TO 255
1
ON ON
2345678
1
2
3
4
5
6
7
8
Switch
Position
1
2
4
8
16
32
64
128
Switch
Value
ON ON
(Dynamic)
FIGURE 2-1: LOGICAL ADDRESS SWITCH SETTING EXAMPLES
The VMIP may contain three separate instruments and will allocate logical addresses as required
by the VXIbus specification (revisions 1.3 and 1.4). The logical address of the instrument is set on
the VMIP carrier. The VMIP logical addresses must be set to an even multiple of 4 unless dynamic
addressing is used. Switch positions 1 and 2 must always be set to the OFF position. Therefore,
only addresses of 4, 8, 12, 16, ... 252 are allowed. The address switch should be set for one of
these legal addresses and the address for the second instrument (the instrument in the center
position) will automatically be set to the switch set address plus one; while the third instrument
(the instrument in the lowest position) will automatically be set to the switch set address plus two.
If dynamic address configuration is desired, the address switch should be set for a value of 255
(All switches set to ON). Upon power-up, the slot 0 resource manager will assign the first available
logical addresses to each instrument in the VMIP module.
If dynamic address configuration is desired, the address switch should be set for a value of 255.
(All switches set to ON). Upon power-up, the slot 0 resource manager will assign the first available
logical addresses to each instrument in the VMIP module.
An application note is provided at the end of this manual to aid in using secondary addressing if a
GPIB/Slot 0 is being used.
FRONT PANEL INTERFACE WIRING
The 8/16-channel version (VM3608A/3616A-1) will have J201 that contains all signals for this
instrument. The 16/32-channel version (VM3608A/3616A-2) will have J201 and J202 provided,
while the 24/48-channel version (VM3608A/3616A-3) will have J200, J201 and J202. The wiring
for each of these connectors is identical and since each group of 8/16 channels is treated as a
separate instrument, the module will have three Channel 1s, three Channel 2s, three Channel 3s,
etc.
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