Program Comments; Reference Oscillator Sources; Afg Frequency Modes; Afg Arming Sources - HP E1340A User Manual

Program Comments

Reference
Oscillator Sources
AFG Frequency
Modes
AFG Arming
Sources

AFG Arm Count

Waveform
Repetition Count
107 HP E1340A Arming and Marker Outputs
The following information is associated with arming operation of the AFG.
There are two reference oscillator sources for the AFG which are selected
by the
[SOURce:]ROSCillator:SOURce
EXTernal : The AFG's front panel "Aux In" BNC.
INTernal : The internal 42.94967296 MHz oscillator
(default source).
There are three frequency "modes" available in the AFG using
( [SOURce:]FREQuency ). The modes selected by the
[SOURce:]FREQuency:MODE
CW|FIXed : Single frequency mode.
: Frequency shift keying mode.
FSKey
SWEep : Frequency sweep mode.
or
CW FIXed
programs to emphasize that the arm source specified by
ARM[:STARt]:LAYer2:SOURce <
(continuous) frequency waveforms.
The arming sources set by the
command are:
EXTernal : The HP E1340A's front panel "Start Arm In" BNC
connector (TTL levels). Available for repetitive burst output
only.
IMMediate : Immediate arming. An arm is internally generated
when the start trigger sequence enters the wait-for-arm state.
The arm count specifies the number of arms the AFG is to receive before it
returns to the Idle state. The arm count is set with the
ARM[:STARt]:LAYer2:COUNt
The waveform repetition (cycle) count specifies the number of cycles per
arm. The cycle count is specified with the
number command. The range for the cycle count is 1 through 65534, or
< >
INFinity . The default value is
command:
command are:
is the default mode but is specified in many of the
source
ARM[:STARt]:LAYer2:SOURce <
command. The default value is 1.
ARM[:STARt][:LAYer[1]]:COUNt
INFinity .
> is for fixed
source
>
Chapter 5