32 Keysight E8357D/67D & E8663D PSG User’s Guide
Signal Generator Overview
Rear Panel
Figure 1-7
Auxiliary I/O Connector (Female 37–Pin)
6. DIGITAL BUS
This is a proprietary bus used for Keysight Baseband Studio products, which
require an E8267D with Options 003/004 and 601/602. This connector is not
operational for general–purpose customer use. Signals are present only when
a Baseband Studio option is installed (for details, refer to
http://www.keysight.com/find/basebandstudio
). The
DIG BUS
annunciator
appears on the display when the Digital Bus is active (and the internal oven
reference oscillator is not cold—
OVEN COLD
appears in this same location).
7. Q OUT
This female BNC connector (E8267D only) is used with an internal baseband
generator (Option 601/602) to output the analog, quadrature–phase
component of I/Q modulation. On signal generators without Option 601/602,
ALT PWR IN
: Used with an internal baseband
generator. This pin accepts a CMOS signal for
synchronization of external data and alternate power
signal timing. Damage levels are > +8 V and <
−
4 V.
View looking into
rear panel connector
DATA CLK OUT
: Used with an internal baseband
generator. This pin relays a CMOS bit clock signal for
synchronizing serial data.
DATA OUT
: Used with an internal baseband generator.
This pin outputs data (CMOS) from the internal data
generator or the externally supplied signal at data input.
EVENT 3
: Used with an internal baseband generator. In arbitrary waveform mode,
this pin outputs a timing signal generated by Marker 3. A marker (3.3 V CMOS
high for both positive and negative polarity) is output on this pin when a Marker 3 is
turned on in the waveform. Reverse damage levels: > +8 V and <
−
4 V.
PATT TRIG IN 2
: Accepts a signal that triggers an
internal pattern or frame generator to start single
pattern output. Minimum pulse width: 100 ns.
Damage levels: > +5.5 V and <
−
0.5 V.
SYM SYNC OUT
: Used with an internal baseband
generator. This pin outputs the CMOS symbol clock for
symbol synchronization, one data clock period wide.
EVENT 4
: Used with an internal baseband generator. In arbitrary
waveform mode, this pin outputs a timing signal generated by
Marker 4. A marker (3.3V CMOS high for both positive and
negative polarity) is output on this pin when a Marker 4 is turned
on in the waveform. Reverse damage levels: > +8 V and <
−
4 V.
