Bk-precision 4013B - Manual Manual do Utilizador Página 12
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4007B/4013B – Operating Manual
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4. Use termination or impedance-matching devices to avoid reflections.
5. Ensure that attenuators and terminations have adequate power handling capabilities.
If there is a DC voltage across the output load, use a coupling capacitor in series with the
load. The time constant of the coupling capacitor and load must be long enough to maintain
pulse flatness.
Impedance Matching
If the waveform generator is driving a high impedance, such as a 1 MΩ input impedance
(paralleled by a stated capacitance) of an oscilloscope vertical input, connect the transmission
line to a 50 Ω attenuator, a 50 Ω termination and to the oscilloscope input. The attenuator
isolates the input capacitance of the device and terminates the waveform generator properly.
3.6 MENU Keys
These keys select the main menus for displaying or changing a parameter, function or mode.
3.6.1 WAVEFORM Keys
The keys select the waveform output and displays the waveform parameter menu (frequency,
amplitude and offset).
Sine Menu
F1: FREQ – (Frequency) Selects and displays the frequency. Change the frequency setting
using the cursor keys, rotary knob or numerical keys.
F2: AMPL – (Amplitude) Selects and displays the Amplitude. Change the amplitude setting
using the cursor keys, rotary knob or numerical keys.
F3:OFST – (Offset) Selects and displays the Offset parameter. Change the offset by using
the cursor keys, rotary dial or numerical keys. If a certain setting cannot be produced, the
waveform generator will display a “Setting Conflict” message.
Amplitude and Offset Interaction:
Amplitude and offset settings interact and are bound by hardware restrictions. In order to
obtain the desired waveform, the following amplitude and offset hardware limitations must be
considered:
- DDS Function Generator 1
- Safety Summary 2
- Compliance Statements 3
- CE Declaration of Conformity 4
- 1 Introduction 6
- 2 Installation 8
- 2.6 Fuse Replacement 9
- 2.7 Grounding Requirements 9
- 2.8 Signal Connections 9
- 3 Operating Instructions 10
- 3.2 Display Window 11
- 3.3 Front Panel Controls 11
- 3.4 Connectors 11
- 3.5 Output Connections 11
- 3.6 MENU Keys 12
- 3.9 Rotary Input Knob 14
- 3.7 ON Key 14
- 3.8 Cursor Keys 14
- 3.10 Power-On Settings 15
- 3.11 Memory 15
- 3.12 Displaying Errors 15
- 3.13 Quick Start 15
- SERVICE INFORMATION 18
- LIMITED THREE-YEAR WARRANTY 18
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