Velleman PersonalScope HPS5 User manual

Velleman
Legen Heirweg 33
9890 Gavere
Belgium
Internet Site: http://www.velleman.be
E-mail: [email protected]
HHPS5 -1999 -ED1

CONTENTS
FCC information for the USA............................................................4
Important...........................................................................................5
GENERAL...........................................................................................6
Features............................................................................................5
Options..............................................................................................5
Technical specifications.....................................................................6
SAFETY and WARNINGS..................................................................7
Symbols displayed on the unit...........................................................7
USE.....................................................................................................8
Survey of the connections and controls.............................................8
Power supply.....................................................................................9
Survey of the indications on the screen...........................................10
OPERATION.....................................................................................11
Turning on/off the Personal Scope..................................................11
Resetting the Personal Scope.........................................................11
Adjusting the contrast......................................................................11
Choice of input ................................................................................11
Switching from one readout to another............................................12
Measuring probe adjustment...........................................................13
Auto-setup function .........................................................................13
Signal screen ..................................................................................14
Screen memory...............................................................................15
Set-up function keys........................................................................15
The markers....................................................................................15
Setting up the voltage per division..................................................16
Setting up the time base..................................................................15
Moving the signal in Y-position........................................................16
Trigger functions..............................................................................17
Setting up a X10 measuring probe..................................................18
MAINTENANCE................................................................................18
TROUBLESHOOTING......................................................................19
The screen remains blank or there is no signal ...............................19
RMS readout is incorrect.................................................................19
No signal on the oscilloscope display..............................................19
Incorrect frequency readout.............................................................19
Voltage readout is not correct..........................................................19
WARRANTY.....................................................................................19
DIAGRAM.........................................................................................20

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 HPS5 oscilloscope can be obtained from
the authorized Velleman dealer.
If the user modifies the HPS5 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.

GENERAL
The Velleman PersonalScope is not a graphical multimeter but a
complete portable oscilloscope at the size and the cost of a good
multimeter. Its high sensitivity -down to 5mV/div -and extended scope
functions make this unit ideal for hobby, service, automotive and
development purposes. Because of its extreme value for money, the
PersonalScope is well-suited for educational use in schools and
colleges. Suitable for measurements on audio equipment, mains voltage
applications, digital signals, all kind of sensors, signal analysis in
automotive applications, car stereo etc… It’s ultra fast full auto setup
function takes care of all the necessary settings and makes measuring
waveforms very easy, a feature that will be appreciated both by experts
and novices.
Features
•High contrast LCD with wide viewing angle
•Full auto set up for volt/div and time/div
•Trigger mode: run -normal -once -slope -/+
•True RMS and dB measurements
•Readout: Vdc-Vpp-Vrms-dBm
•x1 and x10 probe calculation option
•Display mode: none -markers -grid -crosshair
•Marker readout: dt -1/dt (frequency) -dV
•AC/DC input coupling selection
•Automatic zero reference for DC measurements
•Sceen hold fuction
•Auto power off or continuous on
•Low battery detection
•Includes battery charge circuit
Options
•Insulated measurement probe x1 / x10: PROBE60S
•Soft carry case: CHPS5
•Adapter: type PS905 for 230V / PS905USA for 110V

Technical specifications
Maximum sample rate 5MHz for repetitive signals (0.5MHz for single shot
events)
Input amplifier bandwidth 1MHz ( -3dB at 1V/div setting)
Input impedance 1Mohm // 20pF (standard oscilloscope probe)
Maximum input voltage 100Vpeak (AC + DC)
Input coupling DC, AC and GND (GND for auto zero reference)
Vertical resolution 8 bit (6 bit on LCD)
Linearity ?1bit
LCD Graphics 64 x 128 pixels, 64 x 96 pixels for signal
dBm measurement (0 dB=
0.775V) From -
73dB tot +40dB (up to 60dB with X10 probe)
?0.5dB accuracy
True-rms AC measurement From 0.1mV to 80V (up to 400Vrms with X10
probe) 2.5% accuracy
Peak peak and DC range 0.1mV to 180V (1mV to 600V met x10 probe) 2%
accuracy
Timebase range 20s, 10s, 5s, 2s, 1s, 0.5s, 0.2s, 0.1s, 50ms, 20ms,
10ms, 5ms, 2ms, 1ms, 0.5ms, 0.2ms, 0.1ms, 50us,
20us, 10us, 4us, 2us / div.
Input sensitivity range (at x1) 5mV, 10mV, 20mV, 50mV, 0.1V, 0.2V, 0.4V, 1V,
2V, 4V, 8V, 20V /div.
Probe calibration output Approx. 1KHz / 5Vtt
Supply voltage 9VDC/ min 300mA adapter (unregulated) 12VDC if
regulated
Batteries (option) Alkaline type AA or Ni Cd / NiMH rechargeable ( 5
pcs required)
Charge current for
rechargeable batteries 90mA
Battery life Up to 20h with Alkaline batteries
Operating temperature 0 to 50°C (32 to 122°F)
Dimensions 105x220x35mm (4.13x7.95x1.38”)
Weight 395g (14oz.) ex. Batteries

SAFETY and WARNINGS
Symbols displayed on the unit
Important safety information, see user manual.
Ground level
⇒The PersonalScope is ideally suited for measurements of category II
installations with pollution degree 1 and using a maximum of 600V, in
accordance with the IEC1010-1 norm. The enclosure is UL 94V0 listed
⇒Consequently, all 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.
Remove all non-rechargeable batteries when connecting an
AC/DC adapter
!
!

USE
Survey of the connections and controls
1 -BNC input connector (max. input 100Vp AC+DC)
2 -Adapter connection (observe the polarity!)
3 -Battery compartment
4 -X10 probe testing signal behind battery cover
5 -Serial number
6 -Display
7 -Battery charge indication LED
8 -Reset push button
9 –Keyboard
probe
test
x10
!
9V DC
/O
12
HPS5
mark 1-2
trig
t-V/div
Y-pos
probe
x1/x10
Hold
Display
AC/DC
Auto
Reset
Charge
Slope
Trigger
mode
P E R S O N A L
S C O P E
Auto
AC/DC
Display
Hold
Reset
Charge
mark 1-2
trig
t-V/div
Y-pos
probe
x1/x10
Trigger
mode Slope
P E R S O N A L
S C O P E
HPS5
4
3
9
87
6
123456
5

Power supply
The HPS5 PersonalScope can be powered by means of an adapter,
ordinary batteries or rechargeable ones. Rechargeable batteries are
advised for intensive use. The greater the capacity of the rechargeable
batteries, the greater the autonomy of the unit. Rechargeable batteries
of the 500mA/h type will yield approx. 5 hours of autonomy, while
800mA/h-types provide up to 8 hours of autonomy.
Attention:
⇒Use a non-regulated adapter of 9VDC that supplies a min. of
300mA. Observe the polarity and consult your retailer if necessary.
When using a regulated adapter, the user should verify whether it can
supply 12VDC.
Batteries (option):
⇒The unit can be used with either ordinary alkaline batteries or rechargeable
ones e.g. our HR6 type (5 x).
⇒Open the battery cover by loosening the screw:
⇒
Insert the batteries in the holders. Mind the polarity !
probe
test

!
Important:
Do NOT perform measurements unless the battery
compartment is closed. The battery cover should only be
removed for the calibration of the probe 's X10-position.
FWhen first using the rechargeable batteries or if the batteries are
completely discharged, the user should charge them for at least 12
hours before using the unit.
FWhen the unit is OFF, the charging time for 800mA/h type batteries
will be approx. 12 hours.
FThe “Charge” indication LED on the front panel will light up when
the batteries are being charged.
ATTENTION: Remove all non-rechargeable batteries when
connecting the AC/DC adapter !
The message “Lo . bat” will flash in the bottom right corner of your
display when the batteries need replacement (or charging). Insufficient
battery voltage may entail erroneous
Survey of the indications on the screen :
Dot indicates the vertical position of the signal on the screen
Trigger opening indication (fixed in the middle of the screen)
Signal window with (possibly) the markers , cross or dot to
indicate the various divisions.
Time per division or time between markers (when used)
Display of converted/calculated frequency 1/dt between markers
(if present)
Trigger information or screen hold indication.
Input-coupling indication : ac/dc/gnd and X10 probe setup
Measurement readouts, Vp (V peak-to-peak) ; Vr (Volt rms) ;
dB (Decibels) ; V= (DC volt.)
Readout of the voltage between the markers (when present)
Selected voltage per division
Indication of the selected function (blue keys) or battery-low indication

OPERATION
Turning on/off the Personal Scope
Press the “ON/OFF” switch briefly to (de)activate the unit. The screen
will briefly display the logo above the message “timer on”, which means
that the unit will deactivate after eight minutes if no other key has been
pressed during this interval. In order to bypass automatic deactivation :
Keep the ON/OFF switch pressed down while activating the unit. The
screen will briefly display the message “timer off”.
FWhen the unit is deactivated, the last setup will be saved as long as
the power is not cut and as long as the unit is not “reset” (see
below).
Resetting the Personal Scope.
In case of unusual behaviour of the keypad or the display, it is possible
to reactivate the unit by using the "Reset" function. The unit will
subsequently return to the manufacturer-programmed setup.
Press the sunk “Reset” push button for at least 10 seconds.
FDo not use a sharp tool !
Adjusting the contrast
Press the “contrast” key until the desired contrast is displayed.
The user can either keep the key pressed down or press it repeatedly.
When pressing this key, the contrast will always increase to maximum
level before starting again at the lowest available level and working its
way up again
Choice of input
Depending on (part of) the signal to be measured, the input can be
connected to the signal through a direct link or by using a decoupling
capacitor. Select DC for measuring DC voltage. Press the “AC/DC” key
to select either AC or DC input coupling (see indications on the screen).
FWhen measuring the ”ripple” of a DC voltage : put the input on AC
to limit the measurement to the AC component of the signal.
AC/DC

Switching from one readout to another
The Personal Scope offers many voltage measuring possibilities.
Press the “readout” key repeatedly to select one of four possible
readouts :
Peak voltage (Vp).
The signal's peak-to-peak voltage (difference
between highest and lowest value) is
displayed.
True RMS readout (Vr). The area of the AC wave is calculated and
converted to voltage. Please remember that a correct readout invariably
consists of at least one or two visible periods (one can also use the auto-
setup function).
dB measurement (dB). The measured signal is converted to dBm
(0dB=0.775V). Once more, the user should make sure that at least one
or two periods are displayed or select the auto-setup function).
DC voltage measurement (V=). This function enables the user to
measure DC voltages (only for DC input coupling)
FUseful tip for measuring DC voltages:
The readout can be set at zero (reference) for any position on the
screen by keeping the AC/DC key pressed down. Always use the
"run" trigger mode for DC voltage measurement.
NOTE: If the signal goes off-screen or when
the dB-signal is too small for measurement, the
display will show.....
Measuring probe adjustment
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.
probe
x1/x10

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.
Press the “x1/x10” key in order to adjust the
display to the setup of the measuring probe.
Upon choosing X10, “X10” will be indicated
on the screen and all measuring values will
be adjusted accordingly.
IMPORTANT : X10 measuring probes should be calibrated. Read
“Setting up a X10 measuring probe".
Auto-setup function
The auto-setup function is ideally suited for quick measurements as no
manual setup has to be made and everything is automatic.
FUse the auto-setup function when the screen no longer displays a
signal after the manual setup.
•Connect the signal to be checked to the BNC input by means of a
special measuring lead or measuring probe.
•Activate the unit.
•Press “Auto” in order to (de)activate the auto-setup function.
When “auto setup” is engaged, the Volt/div and Time/div readouts are
highlighted.The auto setup function will provide correct measurements
for repetitive and stable signals of max. 400KHz.
The display may read as follows :
REMARK:
The y-position does not work in auto-setup, which is why the trigger
setup remains in run or normal mode.The auto-setup function will
deactivate when using the Trigger , Volt and time per division and Y
position functions. (see below).
x1 x10
x1 x10
Auto

!
IMPORTANT: Put the appropriate measuring probe in the X10
position for measuring high voltages (>100Vp + DC).
NOTE:
⇒The Y-position does not work in auto-setup, which is why the trigger
setup remains in run or normal mode.
⇒The auto-setup function will deactivate when using the Trigger , Volt
and time per division and Y position functions. (see further).
Signal screen
The signal screen is an aid in displaying the divisions on your screen or
in positioning movable markers on the screen.
Press the “Display” key repeatedly in order to engage the various aids:
•A grid divides the screen into reference points.
•A cross inserts a co-ordinate system into the screen.
•Markers: Moveable markers in order to measure the signal (see below
for use).
•Empty : no aids.
GRID
CROSSHAIR
MARKERS
Display

Screen memory
It may be useful to "freeze" certain signals on your screen. This will allow
the user to study the signal or perform measurements with the markers.
Press ‘Hold’ to freeze the screen.
FThe screen is also saved when the unit is deactivated.
FThe memory will be erased if “reset” is pressed or if the battery
voltage is too low.
Set-up function keys
The selected function is displayed in the bottom right
hand corner of the screen.
The four blue function keys work in conjunction with the
arrow keys.
The markers
The user can perform measurements on a certain signal by using the
four moveable markers.
This can be useful when measuring the interval
between two points or the amplitude of any
given peak.
The following indications will appear on the screen :
The time interval between two vertical markers.
The calculated frequency (primarily used for the measurement
of periods).
The voltage between two horizontal markers.
The markers can be moved through the arrow keys. Keeping the key
pressed down will move the marker quickly, pressing it briefly will move
the marker by 1 position. The “mark 1-2” key is used to select the
desired marker.
HPS5
mark 1-2
trig
t-V/div
Y-pos
probe
x1/x10
Hold
Display
AC/DC
Auto
Reset
Charge
Slope
Trigger
mode
P E R S O N A L
S C O P E
Trigger
mode Slope
Hold
mark 1-2

FDetermining the frequency of a signal requires the measurement of
a period. The easiest way to do this would be by placing the vertical
markers either on two consecutive peaks or two identical slopes of a
signal.
Setting up the voltage per division
The user can enlarge or reduce the signal on the screen vertically by
adjusting the displayed voltage per division. (V/div = voltage per
division). The divisions can be made visible through the Display key (see
page 16). Press the “t-V/div” key Press the p or the q key to select the
sensitivity : from 5mV to a maximum of 20V per division.
F50mV to 200V with X10 probe selection
Setting up the time base
Adjusting the time base will visualise more or fewer periods of a signal
(t/div = time per division). The divisions can be visualised through the
Display key (see page 16). Press the “t-V/div” key Press the t or the u
key to set the time base between 20s and 2µS per division.
ATTENTION :the positions 10µs, 4µs and 2µs only operates correctly
with periodic signals, for which the unit will automatically select the
‘normal’ trigger mode. The screen will be adjusted once the trigger level
is reached.
NOTE: Use the minimum time base (2 microsec) as a starting point when measuring a signal
and select longer time bases until the signal is displayed properly. Otherwise the display may
not correctly reflect the signal under measurement due to aliasing.
Moving the signal in Y-position
Press the “Y-pos” key
Press the p key or the q key in order to move the signal in the direction
of the arrows. Prolonged pressing will make the Y-position change
faster. A small dot in the left-hand corner of the screen will indicate the
direction in which the signal has moved. In this manner, the user will
know in which direction the signal was going when it went off-screen.
t-V/div
t-V/div
Y-pos

Trigger functions
The Personal Scope is equipped with a number of "trigger" aids that are
used when the signal can be displayed on-screen. Press the “trig” key.
The t(trigger mode) key enables the user to select the appropriate
triggering method, the u(slope) key is used to select the trigger slope
(see below).
Press the tkey repeatedly to choose between :
“run” mode: The signal will always appear on the screen,
regardless of the level involved. This position is used most
frequently and should always be used for measuring DC
voltages in particular.
“norm” mode: The screen will be adjusted provided that the
signal falls within the trigger level (interruption in the vertical
line on the left-hand side of your screen). Use this mode when
you want to start displaying the signal when it reaches a preset
threshold value.
“once” mode: The screen is adjusted one single time, viz.
when the trigger level is reached. Use this mode to detect e.g.
a short, once-only voltage peak.
ATTENTION : in the positions 10µs, 4µs and 2µs the unit will
automatically select the ‘norm’ trigger mode. The trigger level has to be
reached for the screen to be adjusted.
FBoth the pand the q key remain active in order to move the signal
along the Y-axis, which enables the user to programme a trigger
reference
Repeatedly press the ukey to choose between :
Triggering on the rising slope of the signal. The screen will only
display the signal when a positive slope is "detected", viz. the
signal has to rise in vertical direction in order to trigger.
Triggering on the falling slope of the signal : The screen will only
display the signal when a negative slope is "detected", viz. the
signal has to drop in vertical direction in order to trigger.
trig
Trigger on rising slope Trigger on falling slope

NOTE : There is a time difference of ±12µs between the trigger
point (the interruption in the vertical line on the left-hand side of the
screen) and the start of the actual display. This is specifically true
on higher frequencies.
Setting up a X10 measuring probe
When used in the X10 position, a measuring probe should always be
callibrated to the measuring instrument being used, in this case the
Personal Scope.
•Open the battery cover.
•Set the probe input to X10
•Set the voltage per division to 1V
•Set the time per division to 0.2ms
•Select AC for the input.
Use the probe to perform measurements at the preselected point under
the battery cover. Adjust the trimmer of the
measuring probe in order to obtain a square
wave signal with a top that is as flat as
possible.
MAINTENANCE
Clean the display with a shammy. NEVER use a dustcloth or paper in
order to avoid scratches. The rest of the unit can be cleaned with a soft,
dry cloth. NEVER use water to clean the unit.
probe
test
x10
OK
NG NG

TROUBLESHOOTING
The screen remains blank or there is no signal :
•No power supply
•Batteries are discharged
•Contrast adjustment is incorrect
•Press RESET for at least 10 seconds
REMARK: Temporarily remove both batteries and adapter in case
RESET is not yet operational.
RMS readout is incorrect :
•Make sure that at least 1 and preferably even 2 periods are displayed.
•The batteries are discharged.
No signal on the oscilloscope display :
•Time/div setting is in the wrong position. Try 1ms or choose auto-
setup mode.
•The unit is in the Hold position
•Trigger function is set in the “once” position
•The programmed trigger level is not reached (choose “run” mode)
•Y position is wrong
•The input signal is too high, change the volt/div. setting or choose
auto-setup.
Incorrect frequency readout:
•An incorrect time/div. setting has been chosen. (start at 2µs)
Voltage readout does not correspond with the actual value :
•The measuring probe is in the X10 position
•The batteries are discharged
•The zero refrence is not set correctly for DC measurements.
•Take into account that the RMS readout only measures the AC
voltage

WARRANTY
This product carries a one-year warranty as far as the craftsmanship and
possible flaws in the materials are concerned. The warranty expires
ONE YEAR after the date of purchase.
The warranty will only apply if the unit is wrapped in the original packing
material and either presented to VELLEMAN-KIT N.V or to an official
distributor together with a copy of the original purchasing document.
VELLEMAN-KIT N.V. is under the obligation to repair defects and flaws,
but is free to either replace or repair defective parts.
The warranty does not apply to software, fuses, measuring probes and
batteries. VELLEMAN-KIT N.V will not be held responsible for any flaw
or defect which the company feels is due to negligence on behalf of the
user, to modification or opening of the unit, or to accidents or abnormal
use or treatment of the product.
VELLEMAN-KIT N.V will not reimburse the transport costs or risks, the
costs for removing and replacing the product or any other costs that are
directly or indirectly related to the defect. VELLEMAN-KIT N.V. accepts
no liability for whatever damages may be caused by a malfunctioning
product.