Reference clock selection switch
This switch selects between the different reference clock sources.
Internal: Reference generated by an internal oscillator inside the M8190A
module
Internal Backplane 100 MHz: Reference from AXI Backplane of the AXIe
chassis
External: Reference from Ref Clock In
The “Reference Clock In” can be used when there is an accurate clock
(better than Internal or AXI Backplane). Furthermore, it can also be used
when the DUT and the AWG are synchronized, that is they use exactly the
same clock. Another use case is to synchronize two AWGs by sending the
reference clock out of the first one into the reference clock in of the
second one.
Sample clock selection switch for channel 1 and channel 2
These switches select between internal and external sample clock for channel 1
and channel 2.
Sample clock output configuration switch
This switch selects which sample clock - either internal or external - is present at
the sample clock output.
Internal sample frequency
If internal sample clock is selected, this field specifies the frequency of the
internally generated sample clock.
External sample frequency
If external sample clock is selected, this field specifies the frequency of the used
external clock source. For sample frequencies below 1 GHz the frequency at the
Sample Clk In must be a multiple of the desired sample frequency (see command
[:SOURce]:FREQuency:RASTer:EXTernal[?]). The ratio is shown on the divider
symbol.
External reference frequency
If external reference clock is selected, this field specifies the frequency of the used
external reference clock.
Channel Coupling
Use this check box to select the coupling mode of the two channels. The channels
can operate in coupled or uncoupled mode.
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