3 M9347A SCPI Command Reference
Keysight M9347AH02 Getting Started Guide 13
Clock Subsystem (:CLK)
Frequency
:CLK:FREQuency <val>[<unit>]
:CLK:FREQuency? [MAXimum|MINimum]
This command sets the master system clock frequency. The system clock is
adjustable only when the clock source is set to Direct In.
The query returns the maximum or minimum allowable frequency if the optional
MAXimum or MINimum are used.
Example
:CLK:FREQ 20GHZ
The preceding example sets the system clock frequency to 20.0 GHz.
IVI Equivalent
KtM9347.Clock.Frequency = 20.0e9;
Source
:CLK:SOURce CLKIN| CLKIN4800MHZ| REFIN100MHZ
:CLK: SOURce?
This command sets the source of the system clock. The M9347A supports three
different methods for providing a system clock: A direct clock from 17-20.0 GHz, a
direct clock at 4.8 GHz, or a 100 MHz reference clock. The direct clock must be
provided at the Clock In port of the front panel, and the 100 MHz must be provided at
the Ref In port of the front panel.
Example
:CLK:SOUR CLKIN4800MHZ
The preceding example sets the system clock source to a direct clock at 4.8 GHz.
IVI Equivalent
KtM9347.Clock.Source = ClockSource.ClockIn4800MHz;
Reference Out Frequency
:CLK[:REFerence]:OUT[:FREQuency] REFOUT19200MHZ | REFOUT4800MHZ |
REFOUT100MHZ | OFF
:CLK[:REFerence]:OUT[:FREQuency]?
This command sets the frequency at the Ref Out port of the front panel. The available
choices are dependent upon the clock source. The following table describes the
possible options:
Clock Source Reference Out Frequency
Direct In (17-20 GHz) REFOUT19200MHZ, OFF
Clock In 4.8 GHz REFOUT19200MHZ, REFOUT4800MHZ, OFF
Ref In 100 Mhz REFOUT19200MHZ, REFOUT4800MHZ, REFOUT100MHZ, OFF
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