HP 8360 manual Connectors

CONNECTORS

STOP SWEEP IN/OUT stops a sweep when this input is pulled low. Retrace does not occur, and the sweep resumes when this input is pulled high. The open circuit voltage is TTL high and is internally pulled low when the synthesizer stops its sweep. Externally forcing this input high will not cause damage or disrupt normal operation.

10 MHz REF INPUT accepts a 10 MHz 3.~100 Hz, 0 to +lO dBm reference signal for operation referenced to an external time base. Nominal input impedance is 50 Q.

10 MHz REF OUTPUT provides a 0 dBm, 10 MHz signal derived from the internal frequency standard of the synthesizer. This input is a 50R connector that can be used as the master clock reference output for a network of instruments.

TRIGGER INPUT activated on a TTL rising edge. Used to externally initiate an analog sweep or to advance to the next point of a step list or a frequency list.

TRIGGER OUTPUT Produces a 1 ps wide TTL-level pulse at 1601 points evenly spaced across an analog sweep, or at each point in a step list or a frequency list.

VOLTS/GHz supplies a voltage that is proportional to the RF output frequency, with a ratio of 0.5 volt output for every 1 GHz of RF frequency (factory setting). This ratio is switchable to either

0.25or 1 volt. The switch is located on the Al2 SYTM assembly, see Adjustments in the Service Guide for information.

Z-AXIS BLANK/MKRS supplies a positive rectangular pulse (approximately +5V into 2 kQ) during the retrace and switch points when the synthesizer is sweeping. This output also supplies a -5V pulse when the RF output is coincident with a marker frequency.

Multi-pin Connectors AUXILIARY INTERFACE connector provides control signals to the HP 8516A S-parameter test set switch doubler. This connector is a 25-pin D-subminiature receptacle located on the rear panel. It is also used for dual synthesizer measurement systems (two-tone systems), refer to Step Control Master for more information.

C-8 Operating and Programming Reference	HP 8360
User’s	Handbook