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2074
User Manual
Output
Termination
Input / Output
Protection
Power On/Reset
Defaults
3-4
During use, output connectors must be properly terminated to
minimize signal reflection or power loss due to impedance
mismatch. Proper termination is also required for accurate
amplitude levels at the output connectors. Use 50Ω cables and
terminate the main and SYNC cables with terminating resistors.
Always place the 50 Ω termination at the far end of the cables.
Note that the display reading of the amplitude level is calibrated to
show the actual level on the load, when the load impedance is
exactly 50 Ω. There are cases however, where the load has
different impedance so, in that case, the display reading will
indicate a different reading than the actual amplitude level on the
load. The 2074 provides a customization menu where the load
impedance can be changed from 50 Ω to other values. Information
how to customize the 2074 is given later in this chapter.
The Model 2074 provides protection for internal circuitry connected
to input and output connectors. Refer to the specifications in
Appendix A to determine the level of protection associated with
each input or output connector.
The outputs can only be connected to resistive loads.
Connecting the 2074 to inductive or capacitive load may
damage the output and void the warranty on the
instrument.
The 2074 utilizes non-volatile memory backup that automatically
stores the last setup before the generator has been turned off.
Every time you turn on the instrument, the non-volatile memory
updates the front panel setting with modes, parameters and
waveforms from its last setting with only one exception, for safety
reasons, the outputs remain off even if they were turned on before
powering down the 2074.
After power on, the instrument displays information messages and
updates the display with the last setup information. The 2074 can
always be reset to its default values; Information on how to restore
default parameters is given below.
The non-volatile memory is backed up by a set of
WARNING
NOTE
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