Ac Line (21); Ext Ref In (22); Ref Out (23); Aux 0 Dbm (24) - HP 3324A Operating And Programming Manual

AC Line (21)

Ext Ref In (22)

Ref Out (23)

Aux 0 dBm (24)

Sync Out (25)

Z-blank (26)

X-drive (27)

Marker (28)

The AC line connector assembly enables the HP 3324A
to be powered from the mains. The assembly is a
three-pronged receptacle to provide chassis ground
through the power cable for operator protection.
This external frequency reference may be used to
phase-lock the internal 30 MHz oscillator. If an external
reference is present "EXT-REF" is shown in the display.
A 1 MIIz signal from the IIP 3324A reference circuits is
available here.
A squarewave signal is available at this output for
frequencies between 21 MIIz and 60 MHz.
A squarewave synchronized output signal is available
at this connector. The signal is synchronized with the
output signal crossover point (zero volts or DC offset
voltage), and functions for frequencies between 1 mHz
and 60 MHz.
A TTL-compatible output is present during a sweep
operation.
This output ramps from 0 V to 10 V during a sweep.
This TTL-compatible output goes low at the selected
marker frequency during a sweep, and goes high at
completion of the sweep, in the multi-interval mode.
In the multi-marker mode the signal pulses low at the
selected marker frequency.
Front and Rear Panel Overview 2-5