10
Sync Outs (Contd)
Sweep Sync:
Marker Off
A square wave that is a TTL high from the beginning of the
sweep and a TTL low from the midpoint of the sweep
Marker On
A square wave that is a TTL high from the beginning of the
sweep and a TTL low from the marker frequency
Output Signal
Level:
Logic level nominally 3V.
Ref Clock Output
Buffered version of the 10MHz clock currently in use (internal or external)
Output Level:
Nominally 3V logic level from 50
Ω.
Inputs
Trig In
Frequency Range:
DC
−
1MHz.
Signal Range:
Threshold nominally TTL level; maximum input ±10V.
Minimum Pulse Width: 50ns
Polarity:
Selectable as high/rising edge or low/falling edge.
Input Impedance:
10k
Ω
External Modulation Input
(for AM, FM, PM, PWM)
Voltage Range:
± 5V full scale
Input Impedance:
5k
Ω
typical
Bandwidth:
DC to 20kHz
Ref Clock Input
Input for an external 10MHz reference clock
Voltage Range:
1Vpp – 5Vpp
Maximum Voltage:
+5V
Minimum Voltage:
-1V
Phase Synchronising Two Generators
Two generators can be synchronised together to provide outputs at the same frequency (or
harmonics) and with a phase difference. The amplitude and phase of these outputs can also be
modulated providing the capability to perform QAM and QPSK respectively. It is also possible to
synchronise more than two generators but results are not guaranteed.
Carrier Waveforms:
Sine, Square, Ramp, Arb, Pulse, PRBS
Phase:
(except Pulse
& PRBS)
Range
-360.0 to +360.0 degrees
Resolution
0.1 degree
Accuracy
< ±5ns
