8
Connections
Front Panel Connections
MAIN OUT
This is the output from the main generator; output source impedance can be set to 50
Ω
or 600
Ω
.
It will provide up to 20V peak
−
to
−
peak e.m.f. which will yield 10V peak-to-peak into a matched
load. To maintain waveform integrity only 50
Ω
cable should be used and the receiving end should
be terminated with a 50
Ω
load. It can tolerate a short circuit for 60 seconds.
Do not apply external voltages to these outputs.
AUX OUT
This is a TTL/CMOS level output which may be set to any of the following signals from the
AUX OUT
screen.
waveform sync
A sync signal phase coincident with the MAIN OUT waveform. For sine
and triangle waves the sync waveform rising edge is at the 0º phase
point of MAIN OUT and the falling edge is at the 180º phase point. For
square waves and pulses both phase and symmetry are coincident with
MAIN OUT.
Trigger
Provides a replica version of the actual trigger signal; internal, external,
manual and remote all produce a trigger sync.
Sweep sync
Goes low at the start of sweep and high at the last frequency step of
the sweep. In addition, a 1/4-amplitude marker pulse can be output at
a specified marker frequency.
AUX OUT logic levels are nominally 0V and 5V from typically 50
Ω.
AUX OUT will withstand a
short circuit.
Do not apply external voltage to this output.
TRIG/GATE IN
This is the external input for Trigger, Gate and Sweep operations.
Do not apply external voltages exceeding ±10V.
VCA IN
This is the input socket for external amplitude modulation.
Do not apply external voltages exceeding ±10V.
