Velleman PCS500 Manuale utente

PC Scopes

CHECK THE Pc-Lab2000TM GETTING STARTED GUIDE

FOR SOFTWARE INSTALLATION

PCS500

PCS100 / K8031

PCS500 / PCS100 / K8031

VELLEMAN Instruments is a division of

VELLEMAN Components NV

Legen Heirweg 33

9890 Gavere

Belgium

Support & updates : http://www.Velleman.be

Velleman Instruments

HPCS500_UK-2001– 1

PCS500 / PCS100 / K8031

FCC information for the USA

This equipment has been tested and found to comply with the limits for a

Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses and can radiate

radio frequency energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the interference by one or more

of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

Important

This equipment was tested for FCC compliance under conditions that include

the use of shielded test leads between it and the peripherals. It is important

that you use shielded cables and connectors to reduce the possibility of

causing Radio and Television interference.

Shielded probes, suitable for the PCS500 oscilloscope can be obtained

from the authorized Velleman dealer.

If the user modifies the PCS500 oscilloscope or its connections in any way,

and these modifications are not approved by Velleman, the FCC may withdraw

the user’s right to operate the equipment.

The following booklet prepared by the Federal Communications Commission

may be of help: “How to identify and Resolve Radio-TV Interference problems”.

This booklet is available from the US Government Printing Office, Washington,

DC20402 Stock No. 044-000-00345-4.

PCS500 / PCS100 / K8031

GENERAL

The PCS500 / PCS100 / K8031 are digital storage oscilloscopes, using a

computer and its monitor to display waveforms. All standard oscilloscope

functions are available in the Windows program supplied. Its operation is just

like a normal oscilloscope with the difference that most operations can be

done using the mouse. The markers for indicating voltage and frequency also

provide considerable ease of use and can be operated without difficulty using

the mouse. Apart from being used as an oscilloscope, the unit can also be

used as a spectrum analyzer and as a transient signal recorder, for recording

voltage variations or for comparing two voltages over a longer period (over

more than a year!). Connection is through the computer's parallel port; the

scopes are completely optically isolated from the computer port. Any waveform

displayed on the screen can be stored for later use in documents or for

comparison of waveforms. Together with the PCG10 function generator, a

powerful Bode plotter can be made. In the PCS500 the oscilloscope and

transient recorder have two completely separated channels.

PCS500 features

•Inputs: 2 channels, 1 external trigger input

•Input impedance: 1 Mohm / 30pF

•Frequency response ±3dB: 0Hz to 50MHz

•Maximum readout error: 2.5%

•Low noise

•Pre-trigger function

•Maximum input voltage: 100V (AC + DC)

•Input coupling: DC, AC and GND

•Optically isolated from computer

•Supply voltage: 9 -10Vdc / 1000mA

•Dimensions: 230x165x45mm (9x6.5x1.8”)

•Weight: 490g (17oz)

PCS100 / K8031 features

•1 channel input

•Input impedance: 1 Mohm / 30pF

•Frequency response ±3dB: 0 Hz to 12MHz

•Maximum readout error: 2.5%

•Slew rate 1div/10ns

•Low noise

•Maximum input voltage: 100V (AC + DC)

•Input coupling: DC, AC, (GND only for PCS100)

•Optically isolated from computer

•Supply voltage: 9 -10Vdc / 500mA

•Dimensions: 230x165x45mm (9x6.5x1.8”)

•Weight: 400g (14oz)

PCS500 / PCS100 / K8031

Minimum system requirements

•IBM compatible PC

•Windows 95, 98, ME, (Win2000 or NT possible)

•SVGA display card (min. 800x600)

•Mouse

•Free printer port LPT1, LPT2 or LPT3

•CD Rom player

Options

•Insulated measurement probe x1 / x10: PROBE60S

•Soft carry case: GIP

Technical data

PCS500 Oscilloscope

•Time base: 20ns to 100ms per division

•Trigger source: CH1, CH2, EXT or free run

•Trigger level: adjustable in whole screen

•Input sensitivity: 5mV (10mV for PCS100 / K8031) to 15V/division

•Record length: 4096 samples / channel

•Sampling frequency: Real time* 1.25 kHz to 50 MHz

•Sampling frequency: Repetitive*: 1 GHz (Equivalent Sampling Rate)

PCS100 / K8031 Oscilloscopes

•Time base: 0.1us to 100ms per division

•Trigger source: CH1 or free run

•Trigger level: adjustable per ½ division

•Input sensitivity: 10mV to 3V per division

•Record length: 4079 samples

•Sampling frequency: Real time* 800Hz to 32MHz

PCS500 / PCS100 / K8031 general data

•Trigger edge: rising or falling

•Step markers for voltage, time and frequency

•Interpolation: linear or smoothed

•Vertical resolution: 8 bit

•Auto setup function

•True RMS readout (only AC component)

(*) Real-time Sampling:

A sampling mode in which the picture is build by collecting as many samples

as it can as the signal occurs.

(*) Equivalent Sampling rate:

A sampling mode in which the picture is builds using repetitive signals by

capturing information from each repetition.

PCS500 / PCS100 / K8031

Transient recorder

•Timescale: 20ms/Div to 2000s/Div

•Max record time: 9.4hour/screen

•Automatic storage of data

•Automatic recording for more than 1 year

•Max. Number of samples: 100/s

•Min. number of samples: 1 sample/20s

•Markers for time and amplitude

•Zoom function

•Record and display of screens

•Data format: ASCII

Spectrum analyser

•Frequency range PCS500: 0.. 1.2kHz to 25MHz

•Frequency range PCS100 / K8031: 0.. 400Hz to 16MHz

•Linear or logarithmic timescale

•Operating principle: FFT (Fast Fourier Transform)

•FFT resolution: 2048 lines

•FFT input channel: CH1 or CH2 (CH1 for PCS100 / K8031)

•Zoom function

•Markers for amplitude and frequency

PCS500 / PCS100 / K8031

SAFETY and WARNINGS

Symbols displayed on the unit

Important safety information, see user manual.

The PC scopes are optically isolated from the PC, but even then it

is advisable to measure only safe devices.

⇒Measurements should be avoided in case of polluted or very humid air.

One should also refrain from measuring conductors or installations that

use voltages that exceed 600Vrms above ground level. CAT II indicates

conformity for measurements of domestic installations.

⇒The maximum input voltage for the connections of the unit stands at 100Vp

(AC+DC)

⇒Do NOT open the enclosure while performing measurements.

⇒Remove all test leads before opening the enclosure in order to avoid

electrical shock.

⇒Use a measuring probe with an insulated connector ( e.g. type

PROBE60S) when measuring voltages exceeding 30V.

Before making measurements and for safety reasons, it is important to know

some information about the measured unit.

Safe devices are:

•Battery operated equipment

•Equipment supplied via a transformer or adapter.

Unsafe devices are:

•Equipment directly connected to mains (e.g. old TV sets)

•Equipment that contains components that are directly connected to mains

(dimmers…).

It is advisable, when measuring on above equipment, to use a isolation

transformer.

Always be careful when measuring directly to the mains; please remember

that the ground of both channels is interconnected!

FIMPORTANT: Prior to measuring high voltages, set the probe to the X10

position.

PCS500 / PCS100 / K8031

CONNECTIONS

Survey of the connections and controls

1.BNC input connectors (1CH for PCS100 / K8031)

2.BNC external trigger input (max. input 100Vp AC+DC) only PCS500

3.Power indication LED (software driven)

4.Adapter connection (observe the polarity!)

5.Parallel port connector

6.X10 probe testing signal (at front panel for PCS100 / K8031)

PCS500 PICTURES

465

The unit is connected to the printer port LPT of the computer, using a parallel

cable.

PCS500 / PCS100 / K8031

Connection

Connect the oscilloscope unit to the printer port LPT1, LPT2 or LPT3.

To select the LPT port address click Hardware Setup on Options menu or run

Pc-Lab2000 software.

Connect the mains voltage DC adapter to the unit : 9VDC / 1000mA. (500mA

for PCS100 / K8031) (pin = positive).

MATTENTION: Only use adapter with correct voltage otherwise the unit could

be damaged.

Using a wrong power supply could blow the internal fuse. The fuse is

soldered onto the PCB, please contact an experienced service center, to

replace the fuse. The best way is to cut the leads of the fuse, and to solder a

new (2A PICO, 1A for PCS100 / K8031) fuse onto the old leads.

After starting the software (see also getting started manual), the LED on the

front panel should lid.

Measuring probe

We advise the user to use a measuring probe equipped with a X10 setting

when high or unknown voltages or high impedances need to be measured.

(e.g. our PROBE60S type)

When using the measuring probe in the X10 position, the measuring

impedance will increase to 10Mohm, thereby reducing the measuring

instrument's charge on the coupling.

x1 x10

IMPORTANT: X10 measuring probes should be calibrated. See probe

manual.

PCS500 / PCS100 / K8031

DIGITAL STORAGE OSCILLOSCOPE "DSO"

PCS500 screenshot

PURPOSE

An oscilloscope is an indispensable instrument for viewing electrical signals.

The advantage of a digital oscilloscope is that the measured signals can be

frozen for subsequent examination or comparison with other signals. In

digitizing the signal there is the additional advantage that it can also be

scientifically analyzed. Thus the calculation of RMS values is no problem,

although remember that the displayed RMS value is only for the AC

component of the measured signal. By using the markers the signal frequency

can be determined (by measuring the time of one period), and the voltage can

also be measured between the two markers.

When using a digital oscilloscope, it should be remembered that the signal to

be measured is split up piece-wise, i.e. into "samples". The result of such

splitting is that certain signals may escape the sampling frequency, especially

in the case of high frequency signals.

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