GW Instek AFG-3000 Series - Manual (Page 101)

MODULATION
101
Range Center Frequencies 100μHz~80MHz(3081)
100μHz~50MHz(3051)
(Sine/Square)
100μHz~1MHz (Triangle)
Span Frequency DC~80MHz(3081)
DC~50MHz(3051)
(Sine/Square)
DC ~1MHz (Triangle)
Center - Default 550Hz
Span – Default 900Hz
Note To sweep from low to high frequencies, set a
positive span.
To sweep from high to low frequencies, set a
negative span.
When marker is off, the SYNC signal is a square
wave with a duty cycle of 50%. At the start of the
sweep, the SYNC signal is at a TTL low level that
rises to a TTL high level at the frequency midpoint.
The frequency of the SYNC signal is equal to the
sweep time.
When marker is on, at the start of the sweep, the
SYNC signal is at a TTL high level that drops to a
TTL low level at the marker. The SYNC signal is
output from the mark output terminal.