Keysight E8663D, Руководство пользователя

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Keysight E8357D/67D & E8663D PSG User’s Guide 19
Signal Generator Overview
Front Panel
30. Line Power LED
This green LED indicates when the signal generator power switch is set to the
on position.
31. LINE
In the on position, this switch activates full power to the signal generator; in
standby, it deactivates all signal generator functions. In standby, the signal
generator remains connected to the line power and power is supplied to some
internal circuits.
32. Standby LED
This yellow LED indicates when the signal generator power switch is set to the
standby condition.
33. SYMBOL SYNC
This female BNC input connector is CMOS–compatible and accepts an
externally supplied symbol sync signal for use with the internal baseband
generator (Option 601/602). The expected input is a 3.3 V CMOS bit clock
signal (which is also TTL compatible). SYMBOL SYNC might occur once per
symbol or be a single one–bit–wide pulse that is used to synchronize the first
bit of the first symbol. The maximum clock rate is 50 MHz. The damage levels
are > +5.5 V and <
−
0.5V. The nominal input impedance is not definable.
SYMBOL SYNC can be used in two modes:
— When used as a symbol sync in conjunction with a data clock, the signal
must be high during the first data bit of the symbol. The signal must be
valid during the falling edge of the data clock signal and may be a single
pulse or continuous.
— When the SYMBOL SYNC itself is used as the (symbol) clock, the CMOS
falling edge is used to clock the DATA signal.
On signal generators with Option 1EM, this connector is located on the rear
panel.
34. DATA CLOCK
This female BNC input connector is CMOS compatible and accepts an
externally supplied data–clock input signal to synchronize serial data for use
with the internal baseband generator (Option 601/602). The expected input is
a 3.3 V CMOS bit clock signal (which is also TTL compatible) where the rising
edge is aligned with the beginning data bit. The falling edge is used to clock
the DATA and SYMBOL SYNC signals. The maximum clock rate is 50 MHz. The
damage levels are > +5.5 V and <
−
0.5V. The nominal input impedance is not
definable. On signal generators with Option 1EM, this connector is located on
the rear panel.