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3
Soft Front Panel
54
•
Internal Frequency - Use this option to set the frequency of the
internally generated sample clock.
•
External Frequency - Use this option to specify the frequency of the
selected external clock source.
•
Vector Clock - This is read-only and reports the vector clock frequency
that is available from the Vector Clk Out port.
•
Reference Clock - Use this drop-down list to select the reference clock
source from:
•
Internal - Reference generated by an internal oscillator inside
M8121A module.
•
External - Reference from Ref Clock In.
•
AXI - Reference from AXI Backplane of the AXIe chassis.
•
Default - For Default option, the AXI value is applicable.
•
External Frequency - Use this option to set the frequency of the used
external reference clock.
•
Multi-Module Role - This is a read-only field. Depending upon the
M8192A module connection, it displays one of the following:
•
Normal - When the M8121A module is not configured in the
M8192A module.
•
Master - When the M8121A module is configured as Master in the
M8192A module.
•
Slave - When the M8121A module is configured as Slave in the
M8192A module.
Channel 1/ Channel 2
•
Outputs - Click on the button to enable/disable the output port
(normal and complement for Direct DAC Out) for channels 1 and 2.
•
Mode - Selects the waveform output modes. Available selections are:
•
12 bit Direct
•
14 bit Direct
•
Interpolated mode: x3/x12/x24/x48
•
Channels Coupled - Use this check box to select the coupling mode of
the two channels. The channels can operate in coupled or uncoupled
mode.
•
Format - Selects among the DAC format modes.
•
DNRZ: DAC A and B send same value.
•
NRZ: DAC A sends value for whole sample period.
•
Doublet: DAC A sends +Value, DAC B sends –Value
Keysight M8121A Arbitrary Waveform Generator User Guide
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