Newport New Focus 3502, Руководство пользователя

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When the INT setting is selected for the Sync source, the synthesizer frequency
will be restricted to the working range of the particular chopping wheel. In H/S
mode this range will be modified by the user-specified values of H and S
according to:
F
max
= (S/H)·F
outer
, highest,
and
F
min
= (S/H)·F
outer
, lowest.
The internal synthesizer frequency may be set to three significant digits. The
significant digit to be modified may be selected by the left and right arrow keys.
The magnitude of the digit may be changed with the up and down arrow keys. If
the display overflows or underflows, the display will change between the
Hz / kHz
LEDs and move the decimal point to maintain three significant digits of
resolution.
Set: PHASE
The phase delay may be set from -180.0° to +179.0°. The phase shift is always
with respect to F
outer
. In NORMAL and +/- modes, F
outer
= F
sync
. In H/S mode F
outer
= (H/S)·F
sync
.
When the phase adjustment is active, the DEG LED will be lit. The left and right
arrow keys can be used to select the significant digit to modify, and this digit
will blink. The up and down arrow keys can be used to change the magnitude of
the digit.
Set: H and S
In H/S mode the user may lock the Chopper to a harmonic of the sync frequency.
H is set to the harmonic of interest. Use the up arrow and down arrow keys to set
H to an integer value from 1 to 15.
The user may lock the Chopper to a subharmonic of the sync frequency. S is set
to the subharmonic of interest. Use the up arrow and down arrow keys to set S to
an integer value from 1 to 15.
S and H may be set in any combination.
Set: STORE
The user may store an instrument setup in one of two ways. First, the control
unit will retain the control settings when the power is removed. When power is
restored, the instrument will recall the last control settings used.
Second, the user may utilize one of nine programmable instrument set-ups. To
store an instrument setup press the
Set button until STORE is lit. Then, use the
up and down arrow keys to assign the instrument setup number, 1-9. Press the
left or right arrow key to store the in
strument’s settings. Location 0 is reserved
for the factory default settings (see the Default Settings section below).