Instrumentation and Engineering Services VFR 1 Manual de usuario

Instrumentation and

Engineering

Services, Inc.

VFR 1 Recorder

USER MANUAL

Tel. 850-244-2128 151 Mary Esther Blvd., Suite 311

Fax 850-244-7979 Mary Esther, FL 32569

[email protected]

Tel: 1-850-515-1244

Fax: 1-850-515-1245

IES, Inc.

7552 Navarre Parkway Suite 42

Navarre FL 32566

VFR 1............................................................................................................................... 1

Overview...................................................................................................................... 1

Specifications............................................................................................................... 1

Electrical .................................................................................................................. 1

Power ....................................................................................................................... 2

Physical.................................................................................................................... 2

Operational Theory ...................................................................................................... 2

Control Logic........................................................................................................... 2

Analog-to-Digital (A/D) Converter ......................................................................... 3

Memory.................................................................................................................... 3

Micro-controller....................................................................................................... 3

Oscillator Speed....................................................................................................... 4

Amplifier Gains ....................................................................................................... 4

Amplifier Bias.......................................................................................................... 4

Triggering Modes..................................................................................................... 4

Recorder Operational Modes ....................................................................................... 5

Sleeping.................................................................................................................... 5

Standby .................................................................................................................... 5

Recording................................................................................................................. 5

Awaiting T1 ............................................................................................................. 5

Data Downloading ................................................................................................... 5

Interface Signals Location and Description............................................................. 5

Operational Software ....................................................................................................... 9

VFR Software Program – Main Menu......................................................................... 9

Page 1 of the Main Menu......................................................................................... 9

Page 2 of the Main Menu....................................................................................... 20

Page 3 of the Main Menu....................................................................................... 31

VFR Software Program – Display Data..................................................................... 35

Encapsulation................................................................................................................. 47

Epoxy-Casting............................................................................................................ 47

Compound Formulation......................................................................................... 47

Mold Preparation ................................................................................................... 47

Container Preparation ............................................................................................ 47

Compound Preparation .......................................................................................... 48

Compound De-aeration.......................................................................................... 48

Compound Application.......................................................................................... 48

Compound Cure..................................................................................................... 48

Recorder Packaging ................................................................................................... 49

Epoxy Encapsulation ............................................................................................. 49

Glass Bead Encapsulation...................................................................................... 49

Paraffin Encapsulation........................................................................................... 49

Appendix A.................................................................................................................... 51

Example VFR Settings............................................................................................... 51

Appendix B .................................................................................................................... 56

VFR 1 Signal Locations............................................................................................. 56

VFR 1

Overview

The VFR1 is a reusable, compact, high shock, solid-state, recorder designed to acquire

data in hostile test environments. The epoxy-encapsulated unit was designed to fit inside

of a general-purpose bomb fuze booster cup. By installing the recorder in the place of the

fuze booster and lead, the user is able to record the impact acceleration event as well as

several analog and eight digital events.

The VFR1 can be programmed for various trigger modes, filter frequencies, sample rates,

amplifier gain, and amplifier bias. All of the programmable features are available to the

user through a menu-driven computer operating system (operating in a Windows

environment). On-line computer aided assistance is available to the user when setting-up

the amplifier gain and bias. The user has a visual display of the recorder range and zero

settings rather than relying on calculations.

Low power consumption allows the test instrumentation to be built weeks before the test

and extends the time for data retrieval. After a test, the recorder data is retrieved using a

personal computer and the same computer operating system that is used to program the

recorder.

Specifications

Electrical

Number of Programmable Analog Channels.......................................................................1

Number of Buffered Analog Channels ................................................................................2

Number of Digital Channels ................................................................................................8

Analog Channel Sample Rate (High Speed)...........................................................57.8 kHz

Analog Channel Sample Rate (Low Speed 0) ........................................................28.9 kHz

Analog Channel Sample Rate (Low Speed 1) ..........................................................7.2 kHz

Analog Channel Sample Rate (Low Speed 2) ..........................................................1.8 kHz

Analog Channel Sample Rate (Low Speed 3) ...........................................................451 Hz

Analog Channel Sample Rate (Low Speed 4) ...........................................................112 Hz

Analog Channel Sample Rate (Low Speed 5) .............................................................28 Hz

Analog Channel Sample Rate (Low Speed 6) ...............................................................7 Hz

Analog Channel Sample Rate (Low Speed 7) ............................................................1.8 Hz

Analog Channel Signal Bandwidth......................................... Selectable 2.3kHz or 9.3kHz

Analog Channel Amplitude Resolution ..................................................... 256 digital steps

Analog Channel (Programmable) .......................................... Filter8-pole elliptic low-pass

Total Storage Capacity.........................................................524,288 data words (512K x 8)

External Trigger 1 Signal.................................................................... 3.0 to 10.0-volt pulse

External Trigger 2 Signal...................................................................... 2.3 to 3.3-volt pulse

External Trigger 2 Input Impedance.................................................................10,000 ohms

Internal Trigger ...................................................................................Slope Programmable

Internal Trigger ................................................................................... Level Programmable

Power

Supply Voltage...................................................................................................6 to 15 volts

Standby Current ............................................................................ 450 micro amps (typical)

Operating Current ..............................................................................10 milliamps (typical)

Data Retention Current ................................................................. 450 micro amps (typical)

Sensor Reference Voltage........................................................................................3.3 volts

Sensor Supply Current (Per Channel)...........................................20 milliamps (maximum)

Physical

Shock Survivability................................................................................................100,000 g

Temperature Range.........................................................................................32oF to 160oF

Temperature Range (With Screening) .......................................................... -65oF to 160oF

Encapsulation.............................................................................................................. Epoxy

Size (VFR #1) ........................................................................................See Figure 1 Below

Figure 1. VFR 1 Size

Operational Theory

Figure 2 shows a simplified block diagram of the VFR1. The major components of the

recorder are the control logic, the memory, the analog-to-digital (A/D) converter, and the

micro-controller. Following is a description of each functional block.

Control Logic

The control logic provides the control logic that enables data collection when the recorder

is triggered, places the recorder in a data retention mode when the incoming data has

filled the memory, and enables an external computer to interrogate the memory to extract

the data. The control logic also provides correct timing for writing the data into memory

and sequentially addresses all available memory locations.

Figure 2. Block Diagram of VFR 1

Analog-to-Digital (A/D) Converter

The recorder utilizes a CMOS 8-bit A/D converter for digitizing data. The control logic

selects the sampling rate. The A/D contains a multiplexer that is controlled by the control

logic. The multiplexer sequentially switches the A/D input through all of the available

channels, samples the channel output, digitizes the sampled level, and then places the 8-

bit digital word on the data bus for transfer to memory.

Memory

The data storage device used is a CMOS low-power static, random access memory. The

recorder storage capacity is 524,288 data words (512K x 8 bits). Each sample digitized

by the A/D is an eight-bit word and is stored as a data word in the memory. The A/D

sequentially samples each analog channel, generating a data word for each and writing it

in memory. Once all of the analog channels have been sampled, an addition eight-bit

data word is written in memory. This data word contains the information from the eight

digital channels.

Micro-controller

The micro-controller is the brain that enables the recorder flexibility. The laboratory

computer communicates with the recorder through the micro-controller. The micro-

controller accepts recorder configuration data from the laboratory computer through an

RS-232 serial link. The configuration data contains instructions for oscillator speed,

amplifier gains, amplifier bias, and triggering modes.

Oscillator Speed

The oscillator speed controls the recorder sample rate. The VFR1 has one high speed and

eight low speed options for the oscillator. The low speed is programmable and can be

changed between tests. Table 3-1 lists all of the available sample rates, the sample

periods, and the recording time available at that rate.

Amplifier Gains

SAMPLE RATE SAMPLE PERIOD RECORDING TIME

57.8 kHz .017 mSeconds 2.268 Seconds

28.9 kHz .035 mSeconds 4.535 Seconds

7.2 kHz .138 mSeconds 18.141 Seconds

1.8 kHz .553 mSeconds 72.566 Seconds

450 Hz 2.215 mSeconds 4.838 Minutes

112 Hz 8.858 mSeconds 19.351 Minutes

28 Hz 35.433 mSeconds 77.404 Minutes

7 Hz 141.730 mSeconds 5.160 Hours

Table 1. Oscillator Sample Rates and Recording Times

The amplifier gain sets the full-scale level of the data window. It is similar to setting the

volts/division on a laboratory oscilloscope. The gain adjustment allows the user to

reconfigure the recorder for different test requirements and different sensors. Unlike

other commercially available recorders requiring gain calculations using complex

formulas followed by gain settings through the installation of a calculated resistor value,

the VFR1 is programmable using a laboratory computer.

Amplifier Bias

The amplifier bias adjustment is similar to adjusting the vertical position control of a

laboratory oscilloscope. The bias adjustment allows the user to select the zero location of

the data amplitude. The bias adjustment allows the user to reconfigure the recorder for

different test requirements and different sensors.

Triggering Modes

The user is able to program the recorder, for either the standard G-switch triggering

and/or an auto-triggering mode. In the auto-trigger mode, the micro controller monitors

the recorder channel zero output and generate a trigger 2 signal when the signal crosses a

bit threshold. The bit level selection for triggering the recorder when in the auto-trigger

mode is programmable by the user so the level can be changed between tests or it can be

disabled. The auto-trigger allows the recorder to be triggered in the same manner that a

laboratory oscilloscope is triggered. If a G-switch is attached to the normal trigger pads,

the recorder is triggered by the first signal generated, either the G-switch or the au

trigger. The G-switch ca

to-

nnot be disabled; it must be removed to prevent it from

gering the recorder.

ecorder Operational Modes

ta downloaded while the

rial link is connected, but the analog section remains off.

the

ctive, so signals can be connected to the recorder to test/calibrate the analog section.

not filled up), the “Stop” button

ust be pressed before the data can be downloaded.

rify

status indicates it is “Awaiting External T1”, the

rial connection can be removed.

nd with a cross hair, obtain timing and amplitude information and print the display.

ll of the VFR1 signal locations. Following is a description of each

al.

trig

Sleeping

Sleeping indicates the recorder is in the low current mode. It draws 10-14 mA while the

serial link is connected. When the serial is disconnected, the recorder draws under 500

uA and is dormant. The recorder can be programmed, and da

Standby

Standby indicates the analog section of the recorder is powered, but data is not being

stored into memory. This mode is useful for measuring the data collection current of

recorder because the sensors are powered in this mode. Also, the analog outputs are

Recording

Recording data indicates the analog section is on and the recorder is actually storing data

into memory. When the memory is full, the recorder will automatically turn itself off and

go into the “Sleep” mode to conserve power. If the recorder is recovered after a test, an

it is still in the “Recording” data mode (memory was

Awaiting T1

Awaiting External T1 indicates the recorder is in the “Sleep” mode, waiting for the

correct external 3.3-volt pulse on the T1 pin of the recorder to wake it. The external pulse

is ignored when the serial link is on. When T1 occurs, the recorder will automatically go

into the “Recording” mode, sampling at the slow sampling rate. Note: If there is a sensor

error, the recorder will be shut down into the “Standby” mode. So it is recommended that

the recorder be put into the “Recording” data mode on the bench, before the test, to ve

proper operation. After the recorder

Data Downloading

Data transfer for the VFR recorder is accomplished using the same menu-driven

computer operating system that is used to program the recorder. The software is a user

friendly, menu driven program that allows the user to retrieve, display, and store data

records. In addition, the software enables the user to magnify portions of the data reco

Interface Signals Location and Description

Figure 3 illustrates a

input/output sign

DIG 0 to DIG 7

Digital channel inputs with CMOS inputs impedance. Do not apply a voltage greater

than Vcc or less than 0 volts to these inputs.

amplifier. Do not apply a voltage

reater than Vref or less than 0 volts to this input.

al amplifier. Do not apply a voltage greater than Vref

or less than 0 volts to this input.

CH 0 +

Non-inverting input to the channel 0 differential amplifier. This signal is connected

directly to the non-inverting input of an operational

CH 0 –

Inverting input to the channel 0 differential amplifier. This signal is connected directly to

the inverting input of an operation

Figure 3. VFR 1 Input / Output Signal Location

CH 1 IN

Non-inverting input to the channel 1 operational amplifier. This signal is connected

directly to the non-inverting input of an operational amplifier. Do not apply a voltage

greater than Vref or less than 0 volts to this input.

CH 2 IN

Non-inverting input to the channel 2 operational amplifier. This signal is connected

directly to the non-inverting input of an operational amplifier. Do not apply a voltage

greater than Vref or less than 0 volts to this input.

CH 0 OUT

CH O OUT is the recorder channel 0 amplifier output. This signal is also the input for

the analog multiplexer. Use only high impedance instruments to measure this signal.

OSC OUT

OSC OUT is the output signal of the internal recorder oscillator. The frequency of the

oscillator out signal is the sampling rate of each channel. This output is not active when

the recorder in a sleep mode.

Vcc

Vcc is the regulated power supply output. This output will source 10 milliamps for an

external load.

Vref

Vref is the regulated power supply for powering sensors. This power supply is only

active while the recorder is acquiring data. This output will source 30 milliamps.

GND

GND is the power and signal ground.

SW GND

This signal is a switched ground. When the recorder is collecting data, the SW GND is at

ground potential. When the recorder is in the sleep mode, the SW GND is at Vcc level.

This single can only source/sink 1 milliamp.

BATT

BATT is a connection for an external battery. This input is not diode-coupled to any of

the other battery connections and should not be used in conjunction with any other

battery. This connection is intended to power the recorder when only one battery is used.

Use of this connection for powering the recorder eliminates the diode voltage drop that

the other battery connections have.

BATT 1

BATT 1 is a connection for an external battery. This input is diode-coupled to Battery 2

and External Power Input.

BATT 2

BATT 2 is a connection for an external battery. This input is diode-coupled to Battery 1

and External Power Input.

EXTERNAL POWER INPUT

EXTERNAL POWER INPUT is a connection for an external battery. This input is

diode-coupled to Battery 1 and Battery 2 inputs. This input is used by the interface box

for application of external power during the recorder programming and data retrieval.

TRIG 1

TRIG 1 is a latched input signal that provides a method of initiating the recorder data

collection operation. This trigger signal is a positive pulse that can be between the

voltage range of 3.0 to 10-volts.

TRIG 2

TRIG 2 is a latched input signal that provides a method of initiating the recorder high-

speed data collection operation. This is a CMOS input with a 10K ohm pull-down

resistor. Do not apply input signals greater than 3.3-volts to this input.

RS232-TX

RS232-TX is an RS232 level signal used for communications between the recorder and

the laboratory computer.

Tabla de contenidos

Manuales populares de Equipo de grabación de otras marcas

KV2 Audio

KV2 Audio 500 Series Manual de usuario

Robotics Technologies

Robotics Technologies microBus-Cam II Manual de usuario

Seca

Seca 460 Manual de usuario

Cognex

Cognex MVS-8000 Series Manual de usuario

Mect

Mect MPNC006 Series Manual de usuario

Bad Caf

Bad Caf THE LEASH Manual de usuario

Strymon

Strymon NIGHTSKY Manual de usuario

Mitsubishi Electric

Mitsubishi Electric 16CH DIGITAL RECORDER DX-TL5000U Manual de usuario

Tews Technologies

Tews Technologies TPMC465 Manual de usuario

Honeywell

Honeywell Excel 50 Manual de usuario

SeaLevel

SeaLevel COMM+8.LPCI Manual de usuario

Arturia

Arturia AUDIOFUSE STUDIO Manual de usuario

Rukra

Rukra RK-1240 Manual de usuario

Samson

Samson SCOM Manual de usuario

Dynacord

Dynacord DPS260 Manual de usuario

Nice

Nice Core Manual de usuario

Pyle Pro

Pyle Pro PSS8 Manual de usuario

RF-System

RF-System TinyGate Manual de uso y cuidado