19
Menus for setting up the range, time (sweep rate), type (continuous, triggered, etc.) spacing
(lin/log) and marker position are all accessed from this screen using the appropriate soft
−
key. In
addition the control screen for manual sweep (i.e. sweeping using the rotary control) is selected
from this screen and Sweep Mode itself is turned on and off with alternate presses of the
on
and
off
soft
−
key; sweep can also be turned on by the
sweep
soft
−
key on the
MODE
screen.
On all the following menus, pressing the
done
soft
−
key returns the display to this
SWEEP
SETUP
screen. On all the following menus sweep can be turned on and off with alternate
presses of the
on
and
off
soft-key. Turning sweep off from this or the following menus
always returns the mode to continuous.
Sweep Range
Pressing the
range
...
soft
−
key calls the
SWEEP RANGE
screen.
SWEEP RANGE off
◊
♦
start: 100·00 kHz
◊
stop: 20·000 MHz
◊
centre/span
done
◊
The maximum sweep range for all waveforms is 0.2Hz to 20MHz[10MHz], except triangle
(1MHz). Sweep range can be defined by start and stop frequencies or in terms of a centre
frequency and span
.
Start
and
Stop
soft
−
keys permit the two end points of the sweep to be
set directly from the keyboard or by using the rotary control; frequencies can be entered with a
resolution of 0.1Hz (or 5 digits) but in sweep mode the instrument operates with an increment
resolution of 0.2Hz and the actual frequency of any particular step will be rounded up to the
nearest 0.2Hz increment. The start frequency must be lower than the stop frequency (but see
Sweep Type for selecting sweep direction).
Pressing the
centre/span
soft
−
key changes the screen to permit entry in terms of
centre
frequency and sweep
span
about that frequency; pressing the
start/stop
soft
−
key on that
screen returns the display to the start and stop frequency form of entry.
Note that when the sweep is displayed in terms of centre frequency and span, the span will be
shown to the nearest 0.2Hz increment but the centre frequency can be shown to 0.1Hz
resolution.
Sweep Time
Pressing the
time
...
soft
−
key calls the
SWEEP TIME
screen.
SWEEP TIME off
◊
0·05 s
done
◊
The sweep time can be set from 0·05s to 999s with 3
−
digit resolution by direct keyboard entry or
by using the rotary control. The shortest sweep times will have the fewest steps (a 100ms sweep
will have only 1000 steps whereas a 10s sweep will have 100,000 steps) and will consequently
have a coarse stepping resolution with very wide sweeps, see Frequency Stepping Resolution
section for more discussion.
Sweep Type
Pressing the
type
soft
−
key calls the
SWEEP TYPE
screen.
SWEEP TYPE off
◊
mode:continuous
◊
direction: up
◊
sync: on
done
◊
