3Subject to change without noticeC o n t e n t sGeneral information regarding the CE marking 2100 MHz CombiScope® HM1008-2 4Specifications 5Important hints 6List of symbols used: 6Positioning the instrument 6Safety 6Proper operation 7CAT I 7Environmental conditions 7Warranty and repair 7Maintenance 7Line voltage 7Front Panel Elements – Brief Description 8Basic signal measurement 10Signals which can be measured 10Amplitude of signals 10Values of a sine wave signal 10DC and ac components of an input signal 11Timing relationships 11Connection of signals 11First time operation and initial adjustments 12Trace rotation TR 12Probe adjustment and use 121 kHz adjustment 121 MHz adjustment 13Operating modes of the vertical amplifier 13XY operation 14Phase measurements with Lissajous figures 14Measurement of phase differences in dualchannel Yt mode 14Measurement of amplitude modulation 15Triggering and time base 15Automatic peak triggering (MODE menu) 15Normal trigger mode (See menu MODE) 16Slope selection (Menu FILTER) 16Trigger coupling (Menu: FILTER) 16Video (tv triggering) 16Frame sync pulse triggering 16Line sync pulse triggering 17LINE trigger 17Alternate trigger 17External triggering 17Indication of triggered operation (TRIG’D LED) 17Hold-off time adjustment 17Time base B (2nd time base). Delaying,Delayed Sweep. Analog mode. 18Alternate sweep 18AUTOSET 19Component tester 19CombiScope 21Digital operation 22Digital operating modes 22Memory resolution 22Memory depth 23Horizontal resolution with X magnifier 23Maximum signal frequency in DSO mode 23Display of aliases 23Vertical amplifier operating modes 23Data transfer 23General information concerning MENU 25Controls and Readout 26