Keysight M8121A, User Manual

Page: 17 / 144

Keysight M8121A Arbitrary Waveform Generator User Guide 17
Introduction 1
Front Panel
Figure 3 on page 17 illustrates the front panel of the M8121A instrument.
Figure 3 M8121A front panel
The M8121A front panel includes the following input/output ports:
Inputs/Outputs
• Flow Ctrl - This port is reserved for future use.
• Sample Mrk Out - The two Sample Marker Out ports (Sample Mrk
Out 1/2) can be used to mark the beginning of a certain position in the
analog signal. It has timing resolution of one sample clock cycle. The
Marker signal can be used to trigger external equipment.
• Direct Out - The two Direct Out ports (Direct Out 1/2) are the
differential outputs of the two digital to analog converters. The outputs
can be switched ON or OFF.
• Amp Out - The two Amplifier Out ports (Amp Out 1/2) are the amplified
output signals of the DAC. Amp Out is available if option -AMP is
installed. Option -AMP is SW upgradeable.
• LPN Clk Out - The LPN (Low Phase Noise) Clock Output can be used to
output the clock signal from the LPN clock input. For convenience, a
semi-rigid cable that connects between LPN Clk Out and Sample Clk In
is provided to allow users to programmatically switch between LPN
clock and Sample Clk In without re-cabling. The LPN ports are only
available if option -LPN is installed. Option -LPN is SW upgradeable.
• ODI - The two Optical Data Interface ports (ODI 1/2) can be used to
connect to other ODI ports that provide streaming waveform data.
• Sys Clk Out - This port is reserved for the future use.
• Sys Clk In - This port is reserved for the future use.
• Sample Clk In - The Sample Clock Input can be used if an external
clock source shall be used to clock the analog to digital to converters.
Clock to data delay control is available when using Sample Clk In.
Arbitrary Waveform Generator
Sample Clk
Out
Sample Clk
In
Ref Clk
Out
Ref Clk
In
LPN Clk
In
Sync
In
Vector Mrk
Out 1
Vector Mrk
Out 2
Vector Clk
Out
Trigger
In
Aux
In
Access Fail
M8121A 12 GSa/s
LPN Clk Out
Sys Clk
Out
Sys Clk
In
+8 dBm MAX 3 Vpp MAX -1.5 V... 4 V MAX -1.5 V... 4 V MAX ±10 V MAX +10 dBm MAX
±4 V MAX
±10 V MAX
ODI 2 ODI 1
Sample Mrk
Out 1
Flow Ctrl 1 Direct Out 1 Direct Out 1 Amp Out 1 Amp Out 1 Sample Mrk
Out 2
Flow Ctrl 2 Direct Out 2 Direct Out 2 Amp Out 2 Amp Out 2