PeakTech® 4130 PeakTech® 4135 PeakTech® 4140 Operation manual Digital Spectrum Analyzer
Content 1. Safety introduction 1 1.1. Safety terms and symbols 2 1.2. Safety Symbols on the product 2 1.3. Maintenance and cleaning 3 2. Brief introduction of Digital Spectrum Analyzer 4 Chapter 1 Getting started 5 Chapter 2 Basic operation 11 3. Basic Settings 12 4. SPAN 15 5. Sweep and Function Settings 21 6. Sweep 24 7. Trigger 27 8. Trace 28 9. Marker Measurement 30 10. Peak Search 35 11. Marker-> 37 12. AUTO Tune 39 13. Display 39 14. Preset 40 15.
Overview Chapter 1: Getting started This chapter introduces the front and rear panels, user interface and notes for first operation of the Spectrum Analyer. Chapter 2: Front and Rear panel operation This chapter describes the functions of the keys on the front panel, and introduces menu functions of each key in detail. Chapter 3: Remote Control This chapter introduces remote control methods of the Spectrum Analyzer.
1. Safety introduction This product complies with the requirements of the following European Community Directives: 2004/108/EC (Electromagnetic Compatibility) and 2006/95/EC (Low Voltage) as amended by 2004/22/EC (CE-Marking). To ensure safe operation of the equipment and eliminate the danger of serious injury due to shortcircuits (arcing), the following safety precautions must be observed. Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.
Operation environment To avoid internal short circuit or electric shock, do not operate the instrument in a damp environment. Do not operate in an explosive atmosphere. To avoid equipment damage or personal injury, do not operate the instrument in an explosive atmosphere. Clean and dry Keep product surface’s clean and dry to avoid dust or air moisture affecting the performance of the instrument.
1.3. Maintenance and cleaning Maintenance: Do not place the instrument in the sunlight for a long time. Clean: Clean the instrument regularly according to using status. Method is as follows: 1. To avoid electric shock, disconnect power before cleaning work. 2. Wipe the loose dust on the outside of the instrument with soft moist but not dripping cloth (use mild detergent or water, but not dissolved thinner, otherwise it will damage the designation strip or plastic parts).
2. Brief introduction of Digital Spectrum Analyzer ® The PeakTech 4130 / 4135 / 4140 is a Spectrum Analyzer with compact design, easy handling, high cost – performance ratio and various functions. It has a keyboard layout which is easy to operate, high-definition color LCD screen and various remote communication interfaces. It can be widely used in many fields including education science, enterprise R & D and industrial production etc. Main Features: Frequency range: 9 kHz to 3.0 GHz (P4140) 2.
Chapter 1 Getting started This chapter introduces the front and rear panels, user interface and notes for first operation of the Spectrum Analyer.
Initial inspect 1. Inspect the transport package Check the transport package and verify its contents is complete, keep the package and fill material before testing the analyzer. 2. Inspect the unit Please inspect the unit carefully, if its content is not complete, or the analyzer does not pass the performance test, please contact your dealer or the manufacturer. 3. Check the accessories Check the accessories according to the packing list, if damaged or missing, please contact your PeakTech distributor.
Prepare for use Adjust the legs of the instrument Open the legs of the Analyzer as bracket of the instrument to make it tilted upward before operation, which makes the following operation and observation more convenient. When the instrument is not in use, the user can close the support legs to facilitate placement or removal.
Table 1-2 Description of function keys on front panel Function key Function description Set informations like center frequency, start frequency and end frequency FREQ etc. SPAN Set the frequency range of sweep. AMPT Set parameters like reference level, RF attenuator, scale, Y-axis units etc. Set level offset, the largest mixer and input impedance. Used to perform automatic calibration, automatic range and turn on the preamplifier.
Rear panel 1. VGA port This port provides VGA vedio signal output, connect this interface with VGA cable 2. RS-232 port This port provides serial data output, connect this interface with RS-232 cable 3. TRIGGER IN When the Spectrum Analyzer is under external trigger mode, this connector receives an external trigger signal. The external trigger signal is input to the Spectrum Analyzer through BNC cable 4.10MHz IN/OUT Realize reference clock input/ output through BNC cable 5.
Parameter setting Realize parameter input with numeric keys, adjusting knob or direction keys. This section introducs thress parameter setting methods with an example (set center frequency to 1500 MHz). 1. Use numeric keys 1) Press FREQ Center frequency; 2) Use numeric keys to input value “750”; 3) Select desired unit “MHz” from the unit menu that pops up. 2.
Chapter 2: Basic operation The contents of this chapter are as follows: Basic Settings Sweep and Functions Settings Measurement Settings The using and function settings of Marker Shortcut System Settings -11-
3. Basic Settings 3.1. FREQ Set the frequency parameter of analyzer. The analyzer sweeps within a specified range, and the sweep will start once you change this parameter. The frequency range of current channel can be expressed by either of two groups of paramenters: Start Frequency/Stop Frequency （ fstart/fstop ） , or center Frequency/Span （ fcenter/fspan ） . If any one of them is adjusted, other three parameters will be changed accordingly to ensure their coupling relationship.
3.3. Start Freq Set the start frequency of current channel, displays at the left scale. When pressed, the frequency mode is switched to Start Frequency/Stop Frequency for input. In this mode, parameters you specified are always shown at the lower left and right side of the grid. Key points: The span and center frequency are changed automatically according to the start frequency. The change of the span would have influence on other system parameters. For more details, please refer to “Span”.
3.5. CF Step Set the CF step. User can modify the center frequency by fixed step continuously switches the channel to be measured. Key points: Setting for CF step could be “Manual” or “Auto”. In “Auto” mode, CF step is 1/10 of span for nonzero span, and equals the RBW for zero span. In “Manual” mode, user can input data by numeric keys.
Key points: When Signal Track is on, the ST icon is shown at the left of screen. If an active marker exsits, when Signal Track is on, the analyzer will search and mark the point (with no more than 3dB variation in amplitude) near the marker, set the frequency of this point as center frequency and hold the signal at the center of screen.
4.2. Full Span Set the span of analyzer to be maximum. 4.3. Zero Span Set the span of analyzer to be 0Hz. In this case, stop frequency and start frequency are both equal to center frequency, the horizontal axis denotes time. The analyzer here is measuring the time domain characteristics of amplitude where frequency point is.
4.7. Ref Level Set the reference level, indicates at the top scale as amplitude power or voltage. When change the reference level, the topmost scale of absolute amplitude level changes accordingly shown at the upper left of the display grid. Key points: Maximum reference level is affected by combination of maximum mixing level, input attenuation and preamplifier.
4.9. Scale/Div Only in Log scale mode, set the logarithmic units and scale value per vertical grid division on the display. Key points: Trough changing the scale, the displayed amplitude range is adjusted. Amplitude range can be displayed: Min：Reference level – 10 × scale ； Max：Reference level You can modify this parameter by numeric keys, knob and arrow keys. For more details, please refer to “Parameter Input”. Table 2-8 Scale Parameter Default Range Unit Knob Step Arrow Keys Step Description 10dB 0.
4.11. Y-axis Units Set the unit of Y-axis to dBm, dBmV, dBuV, Volts or Watts. dBm, dBmV, dBuV are uint for Log scaling, but Volts and Watts are unit for Lin scaling. Defualt uinit is dBm. 4.12. Ref Offset Assign an offset to the reference level to compensate for gains or losses generated between the measured device and the analyzer. Then the level of external amplitude tansformer input can be taken as reference for measured signal level.
4.13. Auto Range Auto change the amplitude parameters whitin current span for easy view of the signal display in main screen. Figure 2-4 Before Auto range Figure 2-5 After Auto range Key points: The difference between Auto Range and Auto Scale is that Auto Range can solve the overrange problem caused by parameter setting and adjust the max. mix level to accords with signal.
4.15. Max Mix Level Set max input level of mixer according to the manaitude of signal. Key points: For bigger input signal, select small max mixing level in order to increase input attenuation and reduce distortion. For smaller input signal, select big max mixing level in order to reduce input attenuation and distortion. Paramter in formula 2-3, are always changing on the basis of max mixing level. You can modify this parameter by numeric keys, knob and arrow keys.
5.2. VBW Set the VBW (Video Bandwidth) in order to remove the band noise. Key points: Reducing the VBW to smooth spectrum line and differentiate small signal from the noise, but also will cause the longer sweep (In Auto Sweep mode, sweep time will be affected both by RBW and VBW). In Auto mode, VBW will change with RBW, but not affected by RBW in Manual mode. You can modify this parameter by numeric keys, knob and arrow keys. For more details, please refer to “Parameter Input”.
5.4. Detector Set the detector type of analyzer for different signal measurement. 5.4.1. Detector Type While displaying a wider span, analyzer always capture the whole data for each pixel whthin a specified time. Then, the data will be processed (Peak Value, Average Value) by current selected detector and shown on screen after finishing the processing. Key points: Select appropriate dectector type according to the application to ensure the accuracy of the measurement.
6. Voltage Avg Average the data from sampling assigned to pixel and displays the result. Where, V denotes the average of voltage with unit V, N denotes the number of smaples assigned to each pixel. v I denotes the envelope of smaples with unit V。 6. SWEEP Set the parameters about sweep and trigger, such as Time, Mode, SWT Count and Trig Type. 6.1. Time Set the time for the analyzer to complete a sweep within span. Either Auto or Maual can be used, the default is Auto.
1. Single Set the sweep mode to Single and the number 10 in parameter icon shows the current sweep number. 2. Continue Set the sweep mode to Continue. The “Cont” in parameter icon denotes the analyzer is sweeping continuously. Key points: In single mode, when pressed, the system enter into continue sweep mode and will sweep when trigger condition allows. In continue mode, the system send initialization signal automatically and enter into the judement program directly when each sweep finishes. 6.3.
6.4. Points Set the desired points for each sweep. That is the points of current trace. Key points: When sweep time is limited by smapling rate of ADC (Analog to Digital Converter), modifying the sweep numbers will affect sweep time. That is, the more pionts, the longer sweep time wil be. Modifying the numbers also influences other system parameters, so sytme will restart sweep and measure. You can modify this parameter by numeric keys, knob and arrow keys.
7. Trigger Set the parameters of trigger function. 7.1. Trig Type The trigger type includes Free Run, Video and External. Each icon of selected type will be shown at the left of screen. 1. Free Run Whenever the trigger ocnidtion is satisfied, the analyzer will generate trigger signal continuously. 2. Video When detected voltage of a video signal exceed the video trigger level you specified, the analyzer will generate the trigger signal.
8. Trace Sweep signal is shown as trace on screen. 8.1. Select Trace Analyzer can show 3 traces at most with different trace color (Trace 1-yellow, Trace 2- light blue, Trace 3-red). Trace 1, 2, 3 can be set by users and trace 4 is formed by math operation on base of other 3 traces. Select trace and set related parameters of them. The default is Trace 1 and trace type is Clear Write. Note: The current trace shown on the screen could be saved in analyzer or external memory and recall when needed.
8.3. Average Times Set the average times of trace. Key points: More averaging will reduce the noise and influence of other random signals, also better display the stable signal characteristics. The more averaging takes, the smoother the trace will be. You can modify this parameter by numeric keys. For more details, please refer to “Parameter Input”. Table 2-19 Average Times Parameter Default Range Unit Knob Step Arrow Keys Step Description 100 1 ~ 1000 No No No 8.4. Math 1.
9. Marker Measurement 9.1. Marker The marker shows as a rhombic sign for marking the trace point. Easy for user to readout the amplitude, frequency and sweep time of each point through marker. Key points: Screen can show 4 pairs of marker at most, but only one pair or one single marker is active every time. In marker menu, you can input frequency and time by numeric keys, knob and arrow keys, also view the readout of point on trace. 9.2.
9.4. Delta Delta is one of marker type, used to measure the difference between “reference marker” and “certain point on trace”: X value (frequency or time) and Y value (amplitude). When this type selected, a pair of markers will appear on trace, Reference Marker (indicated with number and letter “R”, like “1R”) and Delta Marker (indicated with number, like “1”). Key points: If there is active marker, pressing this key will enalble a reference marker at the place of current marker.
9.6. Span Pair One of the marker types. When selected, a pair of markers will appear on trace, which are Referenece Marker (indicated with number and letter “R”, like “1R”) and Delta Marker (indicated with number and letter “D”, like “1D”). Key points: You can adjust the position of reference marker (select “reference”) and Delta Marker by numeric keys, knob and arrow keys at the same time.
9.11. Select Marker Select marker to be used for the specific measuring, the default is Marker 1. 9.12. Noise Marker Execute the Noise function for the selected marker and reads the Power Spetral Density. Key points: If current marker under Marker menu is off, pressing this key will enable it to Normal type, and then measure the average noise level at the marked point and nomarlize the value to 1Hz bandwidth.
9.14. Marker Table Open or close the marker table. When the table opened, all opened markers are listed on table and shown on the lower window of screen, including Marker number, Marker trace number, readout type, X-axis reading and amplitude. User can watch several measurements of points and up to 8 markers at the same time. Note: The opened table can be saved in the external memory and recalled when needed. User can press Save key to store the data, detail method is descriped in “Save”. Figure 2-9 9.15.
2. Resolution You can set the resolution of frequency counter by Manual of Auto. The available resolutions are 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz and 100 kHz. Table 2-23 The resolution of frequency counter Parameter Default Range Unit Knob Step Arrow Keys Step Description 1 kHz 1 Hz ~ 100 kHz GHz, MHz, kHz, Hz 10 times 10 times 10. Peak Search Open the Peak searching menu and execute the searching function.
10.6. Cont Peak Turn on or off the Continue Search, the default is off. When this type is selected, once sweep finishes, the analyzer will search a peak automatically to trace the measured signal. The difference between Cont Peak and Signal Track: Cont Peak always search the maximum in current channel, but Signal Track only track the signal with same amplitude of marker before enabling this function, and set the frequency of this signal as center frequency. 10.7.
10.8. Peak Table Open the Peak Table, you will see the peak list that meets the parameter on the lower portion of screen (with frequency and amplitude displayed). The table allows 10 peaks to be shown at most. The opened peak table can be saved in the external memory, also can be recalled when needed. User can press “Save” key to store the data, detail method is descriped in “Save”. 1. On/Off Turn on or off the Peak Table, the default is Off. 2.
11.3. Mkr->Start Set the start frequency of analyzer to be the frequency of current valid marker. If Normal is selected, the start frequency will be set to the frequency of current marker. If Delta, Delta Pair, or Span Pair is selected, the start frequency will be set to the frequency where Delta Marker is. In Zero span mode, this function is invalid. 11.4. Mkr->Stop Set the stop frequency of analyzer to be the frequency of current valid marker.
12. Auto Tune Search for signals antomatically throughout the whole range and adjust the frequency and amplitude to their best status and realize one-key signal search and auto setting of parameters. Figure 2-11 Befor the Auto Tune Figure 2-12 After the Auto Tune Key Points: When executing this function, the backlight of Auto is on and “Auto Tune” is shown on the status of screen. Once finish the searching, the backlight will turn off and the icon “Auto Tune” will disappear on status bar.
13.2. Full Screen Switch to full screen state, the menus on right of screen and the parameters on the left of screen will both disappear. Pressing this key again will exit the full screen state and easy for user to watch the detail trace information. 13.3. Active Fctn Select the position in which the active function is displayed for convenient view of the trace. Optional is Top, Center, Bottom, the default is Top. 13.4. Screen Off Turn on or off the display, the default is On. 14.
15.3. I/O Settings The analyzer supports communication trough the LAN, USB and RS232 interface. 1. I/O interface Enalbe the LAN, USB and RS232, or disable the all. 2. LAN Set the information for LAN. 3. USB Set the information for USB. 4. RS232 Set the information for RS232 15.4. Ref Source Select the internal or external reference source, the default is internal. 16. Source The menu key is used to enable or disable the tracking generator, also to set the amplitude of tracking signal output.
17.3. Limit Set the level for Channel Power and Power Density measurements. Press Limit key to display the status of Level, including the Total Level, Channel Power Level and Power Density Level. Default is Off. Only enable the Total Level, the Channel Power Level and Power Density Level will be displayed. If you want to set the Level Parameters for Channel Power measurements, first make the Channel Power Level to be On, there will be two options Power Max and Power Min.
17.10. Max Hold: Enables or disables the Max Hold, default is Off. When enabled, the function of which is same as the one of Trace. 17.11. ％ Pwr : Sets the occupied bandwidth percentage, that is the percentage of signal power occupied within integral bandwidth power. 17.12. OBW Span: Sets the integral frequency range in main channel, span will be set as the integral bandwidth 17.13. n dB: Sets the n dB value for calculates the transmitting bandwidth 17.14.
18. Specifications Warm up for 30 minutes before operation. The instrument is within calibration period and self-calibration has been done. 18.1. Frequency 18.1.1. Frequency Range Range P 4130 P 4135 P 4140 Resolution 9kHz to 1.5GHz 9kHz to 2.2GHz 9kHz to 3.0GHz 1Hz 18.1.2. Internal reference frequency Reference frequency Aging rate Teperature stability 10MHz -6 <5×10 /year -6 <5×10 (20 ℃ to 30 ℃) 18.1.3. Frequency reading precision Cursor frequency resolution Cursor frequency uncertainty 18.1.4.
18.2. Amplitude 18.2.1 Measurement range Range P 4130 P 4135 P 4140 10MHz to 1.5GHz DANL to +30 dBm 10MHz to 2.2GHz DANL to +30 dBm 10MHz to 3.0GHz DANL to +30 dBm 18.2.2 Maximum input level DC voltage Continuous wave RF power Maximum damage level 50V +30dBm (1.0 W) +40dBm (10W) 18.2.3 DANL 0 dB attenuation, RBW=VBW=100 Hz, sample detector, trace average≥ 50 Display Average 100kHz to 10MHz -90dBm, typical value-110dBm Noise Level 10MHz to 1.
18.2.7 Resolution bandwidth switch Uncertainty 100Hz to 1MHz, relative to RBW 1kHz 18.2.8 Reference level Range Resolution Linear scale 18.2.9 Full-amplitude precision Full-amplitude precision 18.2.10 Intermodulation Second Harmonic Intercept (SHI) Third-order intermodulation (TOI) fc>30MHz 18.2.
18.5. Tracking Generator 18.5.1 Tracking source Frequency range Output power Output flatness 9kHz to 1.5GHz (P4130) 9kHz to 2.2GHz (P4135) 9kHz to 3.0GHz (P4140) -20dBm to 0dBm, step is 1dB 20MHz to 2.7GHz ±3dB 20MHz to 2.2GHz ±2dB 20MHz to 1.5GHz ±2dB 18.6. Input/output 18.6.1 RF input Impedance Connector 50Ω N female 18.6.2 Tracking source output Impedance Connector 50Ω N female 18.6.
Chapter 5 Appendix Standard accessories: CD- ROM with User’s Guide and Programmers Guide BNC-BNC cable N-BNC adapter N-SMA cable N-SMA adapter Power cord High stability oscillator Reference frequency Aging rate Teperature stability 10MHz -7 <5×10 /year -7 <5×10 (20 ℃ to 30 ℃) All rights, also for translation, reprinting and copy of this manual or parts are reserved. Reproduction of all kinds (photocopy, microfilm or other) only by written permission of the publisher.
