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31

Subject to change without notice

chosen is indicated by intensifi ed brightness. Page 1 offers the 
memories 1 to 5 and page 2 the memories 6 to 9. The instrument 
settings (parameter) are stored in the designated memory by 
pressing the function key with the memory cypher.    

9.1.2

 Recall the actual settings

The function key “Recall” opens the submenu “Front Panel 
Recall”. The function key “Page 1  2” is for page selection; 
the page chosen is indicated by intensifi ed brightness. Page 
1 offers the memories 1 to 5 and page 2 the memories 6 to 9. 
The instrument is set to the settings (parameter) recalled from 
the designated memory by pressing the function key with the 
memory cypher.    

9.2 Digital mode 

STOP

 Attention!

 

The following functions are not available in connec-
tion with FFT.

The menu options described in 9.1.1 and 9.1.2 are also availab-
le in digital mode. Additionally, the menu options ”Reference 
Save“ and ”Reference Display“ will be available. A reference 
is a signal which can be stored for later reference to it. 9 non 
volatile memory locations are provided. 

9.2.1

 Reference Save 

leads to the following 3 submenus:

9.2.1.1

 Source (Reference)

The “Source“ from which the signal - to be stored in a reference 
memory - originates can be selected by the INTENS knob.

2

9.2.1.2

 Destination RE x 

There are 9 memory locations available into which reference 
signals from the selected source can be stored. Use the INTENS 
knob 

2

 for selection. 

9.2.1.3

 Save 

Pressing ”Save“ will store the signal from the source selected, 
into the memory selected. 

9.2.2

 Reference Display

leads to the following submenus.
 

STOP

 Attention! 

 

Switching on a reference signal display, automati-
cally switches off the display of mathematic signals 
and vice versa.  

9.2.2.1

 RE x, On Off, associated settings 

When in this submenu, using the INTENS knob will allow 
selection of 2 reference signals which can then be displayed 
alongside 2 input signals. 

9.2.2.2

 RE x 

After calling this function the memory location can be selected 
with the INTENS knob 

2

. (RE 1 to 9) 

9.2.2.3

 On Off  

Control is possible with the on/off pushbutton. When the contents 
of the reference memory are displayed, the memory number is 
indicated with RE x (x = 1 to 9) at the right hand screen side. Swit-
ching to ”on“ will produce another menu item (”Associa. Set“).

STOP

   Please note: 

If both reference displays are ”on“ and if both 
memory locations are identical (e.g. RE1, RE1) the 
signal will be displayed twice on the same spot.

9.2.2.4

 Associated settings 

Pressing this function key causes the oscilloscope to take over 
the settings (parameter) stored when the signal was stored. This 
allows you to identify the parameters. Reference signals can also 
be determined if the associated settings had not been loaded.

10

 SETTINGS 

(pushbutton)

Pressing this pushbutton calls the SETTINGS menu. It contains 
different submenus in analog and digital mode, which can be 
called by the associated function keys. 

10.1 Language (Sprache)

In this submenu the language can be selected: English, German, 
French and Spanish are available. 

10.2 Misc (Miscellaneous) 

10.2.1

 Contr.Beep On Off

Switches the acoustical signal on or off, which informs about 
CW or CCW positions of knobs. 

10.2.2

 Error Beep On Off

Will turn the acoustical error signal on or off.

10.2.3 

Quick Start On Off

In off, the HAMEG logo, the type and the version number will not 
be shown, the instrument will be ready immediately.

10.2.4

 Menu Off time 

The INTENS knob 

2

 can be used to determine the time in 

which the menu is displayed before it is automatically switched 
off. Press the MENU OFF pushbutton 

43

 to switch the menu 

display off earlier.

If “Manual“ is selected, the menus can be fi nished or switched 
over in the following way:
–  Pressing the MENU OFF pushbutton 

43

–   Pressing another pushbutton
–   Pressing the pushbutton that called the current menu dis-

play, taking you one step back in the menu hierarchy.     

10.3 Interface 

This submenu displays the parameter of the bulit in, changeable 
interface. Parameter settings can be changed in the usual way. 
Further information can be found in the section “Data transfer“ 
of this manual, if the original interface is inserted. If an optio-
nal interface is built in, the attached CD contains additional 
information.   

10.4 Display 

This submenu offers several modes of display: 

10.4.1

 Dots 

In this mode the samples are shown as what they are, i.e. dots 
(points). This representation is valuable for judging whether 
enough samples were gathered in order to sufficiently recon-
struct a signal. 

10.4.2

 Vectors 

In this mode the sampling points are interconnected by drawing 
straight lines. If there are only few samples, sin x/x interpolation 
is used to ”create“ intermediate points which are then joined 
by straight lines. 

          C o n t r o l s  a n d  R e a d o u t

Summary of Contents for HM1008-2

Page 1: ...100 MHz CombiScope HM1008 2 Manual English 99 Washington Street Melrose MA 02176 Fax 781 665 0780 TestEquipmentDepot com...

Page 2: ...e 89 336 EEC amended by 91 263 EWG 92 31 EEC Directive EMC 89 336 CEE amend e par 91 263 EWG 92 31 CEE Niederspannungsrichtlinie 73 23 EWG erg nzt durch 93 68 EWG Low Voltage Equipment Directive 73 23...

Page 3: ...ion 14 Phase measurements with Lissajous gures 14 Measurement of phase differences in dual channel Yt mode 14 Measurement of amplitude modulation 15 Triggering and time base 15 Automatic peak triggeri...

Page 4: ...Flash A D Converters Pre Post Trigger 100 to 400 Time Base 50 s cm 5 ns cm Acquisition modes Single Event Refresh Average Envelope Roll Peak Detect USB RS 232 optional IEEE 488 Ethernet USB Signal dis...

Page 5: ...Hz 3 dB X Y phase shift 3 220 kHz Digital mode Time base range 1 2 5 sequence Refresh Mode 20 ms cm 5 ns cm with Peak Detect 20ms cm 2ms cm min Pulse Width 10ns Roll Mode 50 s cm 50 ms cm Accuracy tim...

Page 6: ...as manufactured and tested accordingly It left the factory in perfect safe condition Hence it also corresponds to European Standard EN 61010 1 resp International Standard IEC 1010 1 In order to mainta...

Page 7: ...0 to 40 degrees C During transport or storage the temperature may be 20 to 55 degrees C Please note that after exposure to such temperatures or in case of condensation proper time must be allowed unti...

Page 8: ...d 2 controls 16 VOLTS DIV SCALE VAR knob 34 Channel 1 Y de ection coef cient Y variabel and Y scaling setting 17 VOLTS DIV SCALE VAR knob 34 Channel 2 Y de ection coef cient Y variabel and Y scaling s...

Page 9: ...e rear side and USB Stick ash drive connector 41 COMPONENT TESTER 2 sockets with 4 mm 47 Connectors for test leads of the Component Tester Left socket is galvanically connected with protective earth 4...

Page 10: ...owever when charging and discharging a large capacitor DC coupling is preferable with all signals of varying duty cycle otherwise the display will move up and down depending on the duty cycle Of cours...

Page 11: ...ignal to 5 cm Position the rising portion symmetrically to the graticule centre line using both Y and X positioning controls Notice the intersections of the signal with the 10 and 90 lines and project...

Page 12: ...r other interference is visible especially at high sen sitivity one possible reason may be multiple grounding The scope itself and most other equipment are connected to safety ground so ground loops m...

Page 13: ...r with both a high CM rejection and a high permissible CM range Therefore please observe the following rule Always look at the two signals in the one channel only or the dual modes not in Add mode and...

Page 14: ...ometric functions are periodic limit the cal culation to angles 90 degrees This is where this function is most useful Do not use too high frequencies because as explained above the two amplifiers are...

Page 15: ...to be found in the shaded TRIGGER area they are described in Controls and Readout In YT mode the signal will de ect the trace vertically while the ti mebase will de ect it horizontally the speed can...

Page 16: ...automatic and normal modes Trigger coupling Menu FILTER Consult chapters MODE 20 AUTO LEVEL A B 19 FILTER 21 and SOURCE 22 in Controls and Readout In AUTOSET DC coupling will be used unless ac couplin...

Page 17: ...rds will indicate the trigger time posi tion if this lies within the screen area The Trigger symbol is not indicated This trigger mode is to be used with greatest care and should be an exception rathe...

Page 18: ...a reconstruction of the signal acquired In analog mode the display will always start on the left Let us assume one period of a signal is displayed at a convenient time base setting Increasing the swe...

Page 19: ...COMPONENT TESTER 41 The scope has a built in component tester The test object is con nected with 4 mm banana plugs In this mode the Y ampli ers and the time base are turned off If the components are...

Page 20: ...part is good With enhancement type MOSFETs an open circuit will be seen in all directions as the threshold voltage G S is not available With power MOSFETs the antiparallel diode S D can be seen Tests...

Page 21: ...the sampling frequency is only twice the signal frequency there will only be two points displayed on the screen any number of signal shapes may be drawn which t through these two points The Nyquist th...

Page 22: ...over the screen from left to right in usual Yt mode Roll readout rol 3 Single sweep triggered menu Trigger MODE signal capture in usual Yt mode Single readout sgl 4 Untriggered continuous signal captu...

Page 23: ...en exactly This is dependent on the signal shape as well as on its amplitude displayed While it is fairly easy to recognize a square wave it requires at least 10 samples per period to distinguish a si...

Page 24: ...le a communication between PC and oscilloscope an USB driver must be installed on the PC which is requested by Windows if for the rst time a connection is made between oscilloscope and PC via USB A di...

Page 25: ...e settings Also arrows may be shown which point to available submenus In some modes various pushbuttons or INTENS operations are meaningless and will hence not cause a menu display STOP Please note If...

Page 26: ...the signal expanded by Zoom RO Int Readout intensity Focus Focus for signal and readout Readout On Off The readout can be switched off to eliminate interference of the readout with the signal s that...

Page 27: ...determined by the distance of the short auxiliary cursor line to the long reference line lower respectively left if appropriate with a negative sign 4 2 1 3 degree measurement of degrees The distance...

Page 28: ...7 MATH pushbutton digital mode only not in FFT mode The MATH pushbutton calls the Mathematics menu and a for mula editor The mathematic menu enables the mathematical processing of current channel 1 an...

Page 29: ...opped pushbutton lit or started pushbutton not lit by the RUN STOP pushbutton 6 A trigger will start a new acquisition which will overwrite the display of the former The display will remain on screen...

Page 30: ...ween the samples and short signal deviations such as glitches may occur without being sampled The maximum gap size is 0 25 s between the samples at a time base setting of 50 s cm The advantage of Peak...

Page 31: ...ssocia Set STOP Please note If both reference displays are on and if both memory locations are identical e g RE1 RE1 the signal will be displayed twice on the same spot 9 2 2 4 Associated settings Pre...

Page 32: ...f a menu was opened it will be turned off by AUTOSET During the display of HELP texts AUTOSET is not available AUTOSET can and should be used during FFT ope ration to avoid misadjustment 12 HELP Press...

Page 33: ...shbutton 15 and the menu item acti vated 14 1 Y position 14 1 1 Y Position of channel 2 analog and digital mode POSITION 2 is for Y Position CH2 control if Yt mode time base mode is present and the CH...

Page 34: ...low too many signal periods to avoid so called aliasing The signal display height should be between 5 mm 0 5 div and 8 cm 8 div Signal display heights 8 cm cause the danger that the dynamic range is e...

Page 35: ...In principle the following conditions must be met a Trigger conditions must be present if frequency or period time measurement is performed For signals under 20 Hz normal triggering is required Please...

Page 36: ...ep triggering can be selected Choo sing Slope will allow trigger on any signal shape For video signals select Video and press the FILTER pushbutton 21 in order to nd a choice of special trigger modes...

Page 37: ...ngs are available 21 2 1 Frame Line Depending on the setting chosen triggering will be on frame or line sync pulses The selection will also affect other menu items Readout Tr Source TV 21 2 1 1 Frame...

Page 38: ...This pushbutton allows you to change the function of the HO RIZONTAL knob 27 26 1 Analog mode The pushbutton signals the actually selected function in accor dance with the front panel lettering dark...

Page 39: ...he exception of 50 ns cm TB B can not be set to the same speed as TB A or slower Further information is available in the section Time base B 2nd time base Delay Triggering Analog mode in the chapter T...

Page 40: ...th other parameters in FFT mode From the sampling frequency rate setting the theoretically highest displayable frequency fmax results In accordance with the Nyquist Shannon sampling theorem the highes...

Page 41: ...resentation by time base A there will be no triggering of time base B any more and thus no time base B display The same holds in time base B only mode 30 1 5 B trigger Edge Except for the negative edg...

Page 42: ...ls with low frequency content If the DC content of the signal or the duty cycle of pulses changes the capacitor will charge or discharge and this will cause a momentary Y shift of the display 31 2 Gro...

Page 43: ...ng is necessary and no information pertaining to it is shown FFT DUAL mode will not be offered in combination with FFT 32 4 ADD In ADD mode the signals of both channels are algebraically added and dis...

Page 44: ...tion of it e g to the screen centre without disconnecting the signal After switching back to the signal its amplitude can now be determined with respect to the formerly set zero reference The 0 V Grou...

Page 45: ...uency is the highest frequency a real time digital oscilloscope can measure without aliasing This frequency is half the sampling frequency sam pling rate In case of higher frequencies the number of sa...

Page 46: ...bmenus Save and Recall that can be opened by pressing the assigned function keys When the menu Utilities is not displayed it opens automati cally when a USB ash drive is connected with the USB Stick c...

Page 47: ...on can be found under section Component Tester 42 USB Stick USB ash drive connector After a USB ash drive has been connected the LED in the USB ash drive brie y blinks and the menu Utilities opens Fur...

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