C&h technologies Vx462b User manual

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USER'S MANUAL

VXI PULSE

GENERATOR

MODULE

MODEL

VX462B

ManualPartNo:11026339C

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C&H Technologies, Inc. (C&H) provides this manual "as is" without warranty of any kind, either

expressed or implied, including but not limited to the implied warranties of merchantability and

fitness for a particular purpose. C&H may make improvements and/or changes in the product(s)

and/or program(s) described in this manual at any time and without notice.

This publication could contain technical inaccuracies or typographical errors. Changes are

periodically made to the information herein; these changes will be incorporated in new editions of

this publication.

The information and/or drawings set forth in this document and all rights in and to inventions

disclosed herein which might be granted thereon disclosing or employing the materials, methods,

techniques or apparatus described herein, are the exclusive property of C&H Technologies, Inc.

A Reader's Comment Form is provided at the back of this publication. If this form has been

removed address comments to:

C&H Technologies, Inc.

Technical Publications

P. O. Box 14765

Austin, Texas 78761-4765

C&H may use or distribute any of the information you supply in any way that it believes

appropriate without incurring any obligations whatever.

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VME/VXI MODULE WARRANTY

C&H Technologies, Inc. warrants its VME/VXI products to be free from defects in material and

workmanship for one year from date of shipment. C&H will repair or replace the defective

product without charge within the warranty period, provided the defective item is shipped, freight

prepaid, to C&H Technologies, at 15809 Vision Drive, Pflugerville, TX 78660. C&H will pay

return freight charges to any point in the continental United States or Canada.

Obligations under this warranty shall be limited to repair or replacement, at C&H's discretion, of

any product or part thereof which has been returned by the original purchaser with transportation

prepaid and, upon examination by C&H, found to be defective. C&H assumes no responsibility

for loss or damage to equipment being returned for repair or replacement under the terms of this

warranty. Equipment which, upon examination by C&H, requires repair or replacement of parts

thereof as a result of improper installation, misuse, unauthorized alterations or repairs, or user

negligence, will have such repairs or replacement of parts made at then current rates.

This warranty does not cover damage caused by misuse, neglect, accident, or improper

application or installation. C&H shall not be liable for consequential damages of any kind arising

out of the purchase, installation, use or misuse of the product. C&H makes no representation or

warranty of any kind, either expressed or implied, with respect to equipment operation or

procedures. Any action that the user may take in reliance upon the operation or accuracy of this

equipment shall be taken solely at the user's own responsibility and risk.

Please notify the C&H sales department to obtain a Return Authorization Number (RAN) prior to

return of a product under the terms of this warranty. Notification is to include the Model and

Serial numbers of the product along with full details of the problem. Modules returned should

clearly show the RAN on the outside of the package.

iii

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AMENDMENT NOTICE

C&H Technologies, Inc. makes every attempt to provide up-to-date manuals with the associated

equipment. Occasionally, changes are made to the equipment wherein it is necessary to provide

amendments to the manual. If any amendments are provided for this manual they are printed on

colored paper and will be found at the rear of this manual.

NOTE

The contents of any amendment may affect operation, maintenance,

or calibration of the equipment.

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INTRODUCTION

This manual describes the functional operation of the C&H Model VX462B VXI Pulse Generator

(Part No. 11026335). This module is one of a number of test and data acquisition/control

modules in the VME and VXI format provided by C&H.

Contained within this manual is information on the physical and electrical specifications,

installation and startup procedures, operating procedures, functional analysis, and figures and

diagrams required to adequately support this product.

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TABLE OF CONTENTS

1.0 GENERAL DESCRIPTION ............................................................................................. 1

1.1 PURPOSE OF EQUIPMENT................................................................................ 1

1.2 SPECIFICATIONS OF EQUIPMENT.................................................................. 1

1.2.1 Key Specifications................................................................................ 1

1.2.2 Electrical.............................................................................................. 1

1.2.3 Mechanical........................................................................................... 1

1.2.4 Environmental...................................................................................... 2

1.2.5 Bus Compliance ................................................................................... 3

2.0 INSTALLATION ............................................................................................................. 5

2.1 UNPACKING AND INSPECTION ...................................................................... 5

2.2 HANDLING PRECAUTIONS.............................................................................. 5

2.3 INSTALLATION.................................................................................................. 5

2.4 PREPARATION FOR RESHIPMENT.................................................................. 5

3.0 FUNCTIONAL DESCRIPTION....................................................................................... 7

3.1 GENERAL............................................................................................................ 7

3.2 SWITCHES AND JUMPERS ............................................................................... 7

3.3 INDICATORS ...................................................................................................... 8

3.4 CONNECTORS.................................................................................................... 8

3.4.1 Front Panel Connectors........................................................................ 8

3.4.2 Rear Connectors................................................................................... 8

3.5 CONFIGURATION REGISTERS......................................................................... 9

3.5.1 VXI Configuration Registers................................................................ 9

3.5.2 Pulse Configuration Registers............................................................... 11

4.0 OPERATING INSTRUCTIONS....................................................................................... 15

4.1 LOGICAL ADDRESS........................................................................................... 15

4.2 PROGRAMMING SEQUENCE ........................................................................... 16

4.3 NORMAL MODES OF OPERATION.................................................................. 16

4.3.1 Single Pulse Mode................................................................................ 16

4.3.2 Delayed Pulse Mode............................................................................. 16

4.3.3 Double Pulse Mode.............................................................................. 16

4.4 TRIGGERED MODES OF OPERATION............................................................. 17

4.4.1 Free...................................................................................................... 17

4.4.2 Triggered Mode ................................................................................... 17

4.4.3 Gated Mode......................................................................................... 17

4.5 SPECIAL MODES OF OPERATION................................................................... 17

4.6 OUTPUT VOLTAGE LEVEL PROGRAMMING................................................ 18

5.0 TROUBLE ANALYSIS.................................................................................................... 19

5.1 BUILT IN TEST AND DIAGNOSTICS............................................................... 19

5.2 TROUBLE ANALYSIS GUIDE........................................................................... 19

APPENDIX A - BOARD LAYOUT....................................................................................... 1

APPENDIX B - CONNECTORS............................................................................................ 1

vii

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LIST OF FIGURES

Figure 1. Electrical Timing and Output Characteristics ...........................................................2

Figure 2. Simplified Block Diagram........................................................................................7

Figure 3. Hardware Configurable Controls .............................................................................7

Figure 4. Front Panel..............................................................................................................8

Figure 5. VXI Configuration Registers...................................................................................10

Figure 6. PRI Register............................................................................................................11

Figure 7. Delay Register.........................................................................................................12

Figure 8. Pulse Width Register...............................................................................................12

Figure 9. Control Register......................................................................................................13

Figure 10. Low/High Level Reference Registers.....................................................................14

Figure 11. Functional Block Diagram .....................................................................................15

Figure B-1. P1 Pin Configuration ...........................................................................................1

Figure B-2. P2 Pin Configuration ...........................................................................................2

Figure B-3. Front Panel Connector.........................................................................................3

LIST OF TABLES

Table I. VXI Register Address Map .......................................................................................9

viii

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1.0 GENERAL DESCRIPTION

The VX462B is a B-size VXIbus compatible programmable 20 MHz pulse generator with an

additional 40 MHz square wave function. The module can output single or double pulse patterns

that can be continuous streams or externally triggered or gated. The pulse repetition interval and

pulse width are programmable and a delay time may be programmed in the delayed or double

pulse modes. The output amplitude is also programmable.

1.1 PURPOSE OF EQUIPMENT

This module is well suited for applications within automated test equipment and hardware-in-

the-loop simulation systems, as well as development laboratory environments.

1.2 SPECIFICATIONS OF EQUIPMENT

1.2.1 Key Specifications

Single and double pulse modes

Continuous, triggered, gated, and delayed modes

Programmable pulse repetition interval and pulse width

Programmable delay time

±10Vpp output amplitude with low impedance output, or

±5Vpp output amplitude with 50 Ohm impedance output selected.

Read back capability on all registers

1.2.2 Electrical

The module requires the +5V and +12V power from the VXI backplane. The peak module

current (IPM) for the +5 volt supply is 3.0 amps and for the +12 volts it is 0.4 amps. The pulse

timing and output characteristics are shown in Figure 1.

1.2.3 Mechanical

The mechanical dimensions of the module are in conformance with the VXIbus specification Rev

1.4 for single slot size 'B' modules. The nominal dimensions are 233.35 (9.187 in) high x 160 mm

(6.299 in) deep. The module is designed for a mainframe with 20.32 mm (0.8 in) spacing between

slots. As required by the VXI bus specification, these dimensions are in accordance with those

given in the VME bus specification (Rev. C.1).

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Pulse Repetition Interval

Range: 50ns to 1 sec, in 6 ranges

Resolution: 25ns min., 10 bits

Accuracy: ±15ns of the programmed value

Pulse Width

Range: 25ns to 1sec, in 6 ranges

Resolution: 25ns min., 10 bits

Accuracy: ±15ns of the programmed value

Delay Timing (from Trigger Out)

Range: 25ns to 1 sec, range slaved to Pulse

Repetition Interval range

Resolution: 25ns min., 10 bits

Accuracy: ±15ns of the programmed value

Pulse Output

Impedance: 2-5 ohms (max. load 50 ohms) or

50 ohms selectable.

Amplitude: ±10V (no load, <10 MHz) (low impedance)

+5V into 50 ohms (50 Ohm impedance)

Accuracy: ±4% of the programmed value plus ±100mv

offset error (no load)

Transition Time: Fixed rate, 5ns at 5V (typical)

Trigger/Gate

Trigger Output: TTL, 10 gate drive capability

Trigger/Gate In: TTL

Figure 1. Electrical Timing and Output Characteristics

1.2.4 Environmental

The environmental specifications of the module are:

Operating Temperature: 0°C to +50°C

Storage Temperature: -40°C to +65°C

Humidity: <95% without condensation

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1.2.5 Bus Compliance

The module complies with the VXIbus Specification Revision 1.4 for B-size register based

modules and with VMEbus Specification ANSI/IEEE STD 1014-1987 and IEC 821.

Manufacturer ID: FC1 hex

Model Code: FFD hex

Access Type: Register Based

Addressing: A16

Data Transfer: D16

Sysfail: not supported

Interrupts: not supported (IACKIN tied to IACKOUT)

Bus Arbitration: BRx tied to BGx

Local Bus: not used

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2.0 INSTALLATION

2.1 UNPACKING AND INSPECTION

In most cases the VX462B is individually sealed and packaged for shipment. Verify that there has

been no damage to the shipping container. If damage exists then the container should be retained

as it will provide evidence of carrier caused problems. Such problems should be reported to the

carrier immediately as well as to C&H. If there is no damage to the shipping container, carefully

remove the module from its box and anti static bag and inspect for any signs of physical damage.

If damage exists, report immediately to C&H.

2.2 HANDLING PRECAUTIONS

The VX462B contains components that are sensitive to electrostatic discharge. When handling

the module for any reason, do so at a static-controlled workstation, whenever possible. At a

minimum, avoid work areas that are potential static sources, such as carpeted areas. Avoid

unnecessary contact with the components on the module.

2.3 INSTALLATION

AAAA

AAA

AAAA

CAUTION: Read the entire User's Manual before proceeding with the

AAAA

AAA

AAAA

installation and application of power.

Set or verify the module's logical address. Insert the module into the appropriate slot according

to the desired priority. Apply power. If no obvious problems exist, proceed to communicate with

the module as outlined in Section 4.0 (Operating Instructions).

2.4 PREPARATION FOR RESHIPMENT

If the module is to be shipped separately it should be enclosed in a suitable water and vapor proof

anti static bag. Heat seal or tape the bag to insure a moisture-proof closure. When sealing the

bag, keep trapped air volume to a minimum.

The shipping container should be a rigid box of sufficient size and strength to protect the

equipment from damage. If the module was received separately from a C&H system, then the

original module shipping container and packing material may be re-used if it is still in good

condition.

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3.0 FUNCTIONAL DESCRIPTION

3.1 GENERAL

The VX462B is configured, controlled, and statused through on-board registers accessible

through the VXI backplane. These registers control the mode of operation, pulse repetition

interval, pulse width, delay time, output amplitude and an output relay. A simplified block

diagram of the module is shown in Figure 2.

CONTROL

DATA BUS

ADDR BUS

ADDR BUS CONTROL

DATA BUS TRIG OUT

TRIG IN/GATE

PULSE OUT

LOGIC

CONTROL

ADDRESS

DECODE

VXI &

USER

REGISTERS

PULSE

GENERATOR

LOGIC

VXI

INTERFACE

Figure 2. Simplified Block Diagram

3.2 SWITCHES AND JUMPERS

The following switches are used to

configure the VX462B. Refer to

Figure 3 for the switch and jumper

locations.

LOGICAL ADDRESS An 8-bit

logical address switch is provided

to uniquely identify the module in

the system. Refer to Section 4 for

switch definition.

OUTPUT IMPEDANCE The

VX462B can be configured with a

50 Ohm or a 2 Ohm output

impedance. Install a jumper in J5

only for 2 Ohms, and J6 only for

50 Ohm series output impedance.

Logical Address

Selection

128

01 P1

J6J5 50 Ohm2 Ohm

Output Impedance

Selection

Figure 3. Hardware Configurable Controls

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VX462B

RUN

MODID

PULSE

TRIG

VXI

bus

OUT

Figure 4. Front Panel

3.3 INDICATORS

Two LED indicators are provided on the front panel. One indicates

the MODID status and the other indicates the board status.

MODID: This front panel LED illuminates whenever the host

processor applies the MODID signal to the slot the

module is occupying.

RUN: This front panel LED illuminates when the modules

is actively outputting pulses.

3.4 CONNECTORS

3.4.1 Front Panel Connectors

Three BNC type connectors are provided for the pulse output, trigger

output, and trigger input as shown in Figure 4. Their functions are as

follows:

TRIG IN This TTL level Trigger Input signal initiates the pulse

cycles when Free Running Mode bit (FRE) in the Pulse Control

rising edge of this signal starts one pulse cycle (single or double

pulse). If the TMD bit is set to one, the TRIG IN signal acts as a

gate. This gate allows the pulse cycle to repeat continuously while the gate is high. When the

gate is lowered, the current pulse cycle completes, and the pulse output stops.

TRIG OUT This TTL level Trigger Output signal indicates the beginning of a pulse cycle. It

occurs 50-75ns after the RUN bit is set or the trigger input (TRIG IN) signal goes high. In

single or double pulse mode, the output pulse (PULSE OUT) will start approximately 25ns

after trigger out. In delayed pulse mode, the output pulse will start the programmed time after

trigger out + approximately 25ns. The width of trigger out is equal to the pulse width range

selected (i.e., 25ns, 100ns, 1µs, etc.). When in free running mode a trigger output signal will

occur at the beginning of every cycle.

PULSE OUT The amplified pulse cycles are available at this connector. The output

impedance of this signal in jumper selectable between 2 or 50 Ohms (see figure 3). The

output amplitude, cycle period, pulse width, and other pulse and trigger characteristics are

3.4.2 Rear Connectors

The P1 and P2 connectors are configured in accordance with the VXI specification. (See

Appendix B)

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3.5 CONFIGURATION REGISTERS

There are several types of registers used to configure and control the VX462B. The VXI

configuration registers provide for control and status as required by the VXIbus specification.

The other register provides board-level control and status of the pulse repetition interval, pulse

width, trigger modes and delay times, and output amplitude. An address map of the registers is

shown in Table I.

3.5.1 VXI Configuration Registers

The VXI configuration registers contain basic information needed to configure a VXIbus system.

The configuration information includes: manufacturer identification, product model code, device

type, memory requirements, device status, and device control. The registers are briefly described

below and are detailed in Figure 5.

VXI Identification (ID) Register (Base + 00h) - A read of this register provides

manufacturer identification, device classification (i.e., register based), and the addressing

mode (A16). A write to this register has no effect.

VXI Device Type Register (Base + 02h) - A read of this register provides the model code

identifier. A write to this register has no effect.

VXI Status/Control Register (Base + 04h) - A read of this register provides the state of

P2 MODID* line, and the Ready and self-test Passed status. A write to bit 0 of this

Table I. VXI Register Address Map

A16 Address Write Register Description Read Register Description

Base + 12 High Reference Register High Reference Register

Base + 10 Low Reference Register Low Reference Register

Base + 0E Pulse Control Register Pulse Control Register

Base + 0C Pulse Width Register Pulse Width Register

Base + 0A Delay Register Delay Register

Base + 08 PRI Register PRI Register

Base + 06 VXI Unused Register VXI Unused Register

Base + 04 VXI Control Register VXI Status Register

Base + 02 VXI Read Only Register VXI Device Type Register

Base + 00 VXI Read Only Register VXI ID Register

Bit D15 . . . . . D00 D15 . . . . . D00

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00 VXI ID

Bit1514131211109876543210

Write Not Used Not Used

Read Device

Class Address

Space Manufacturer ID

Device Class ⇒Device Class (Register Based = binary 11)

Address Space ⇒Address Space (A16 Only = binary 11)

Manuf. ID ⇒Manufacturer Identification (C & H Engineering = hex FC1)

02 VXI DEVICE TYPE

Bit1514131211109876543210

Write Not Used

Read 1111 Model Code

Model Code ⇒Model code (C&H Model VX462B = hex FFD)

04 VXI Status/Control

Bit1514131211109876543210

Write Not Used Rst

Read 0MOD

ID* 1111110000RdyPass 1 1

Rst ⇒Reset (a 1 resets the card)

MOD ID* ⇒Module ID Status (0 = P2 MODID* line is selected (active-high))

Rdy ⇒Ready (1 = ready)

Pass ⇒Self-test pass/fail indicator (1 = passed)

Figure 5. VXI Configuration Registers

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3.5.2 Pulse Configuration Registers

Pulse Repetition Interval Register (08) This read/write register controls the pulse repetition

interval and the state of the output relay. See Figure 6 for details.

08 PRI Register

Bit1514131211109876543210

Write OEN Range Not Used PRI Multiplier

Read OEN Range Not Used PRI Multiplier

OEN ⇒Output Relay Enable (1 = enabled/output on)

Range ⇒PRI & Delay Range bit 14 13 12

0 0 0 25 ns

0 0 1 100 ns

010 1µs

0 1 1 10 µs

1 0 0 100 µs

1 0 1 1 ms

1 1 X invalid

PRI Multiplier ⇒PRI Multiplier (period = PRI Multiplier ×Range)

NOTES:

1) The Range field is used for both the PRI and Delay time settings.

2) The minimum programmable period is 100 nsec. Therefore the minimum PRI

Multiplier is 4 in the 25 nsec range, and 2 for all other ranges.

3) The maximum PRI Multiplier is 1023; therefore, the maximum programmable period

is 1.023 sec.

4) For highest accuracy use the smallest range with a larger multiplier.

Figure 6. PRI Register

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