HP HP 8753E, User Manual, Page: 47 / 699

11.
12.
13.
14.
15. TEST.
This outputs a signal of the limit test results as follows:
16.
17.
18.
19.
20.
EXTERNAL
INPUT. connector. This allows for a frequency reference signal
input that can phase lock the analyzer to an external frequency standard for increased
frequency accuracy.
The analyzer automatically enables the external frequency reference feature when a
signal is connected to this input. When the signal is removed, the analyzer automatically
switches back to its internal frequency reference.
INPUT connector. This allows for a dc or ac voltage input from an external
signal source, such as a detector or function generator, which you can then measure, using
the S-parameter menu. (You can also use this connector as an analog output in service
routines, as described in the service manual.)
EXTERNAL AM connector.
This allows for an external analog signal input that is
applied to the circuitry of the analyzer’s source. This input analog signal amplitude
modulates the RF output signal.
EXTERNAL
TRIGGER
connector.
This allows connection of an external negative-going
signal that will trigger a measurement sweep. The trigger can be set to
external through functions.
TEST SEQUENCE.
This outputs a signal that can be programmed in a test sequence
to be high or low, or pulse (10 high or low at the end of a sweep for robotic part
handler interface.
n Pass: TTLhigh
n
Fail:
This allows the connection of an optional switch. Using the
TEST SET This allows you
to connect an HP 8763E Option 011
analyzer to an HP or S-parameter test set using the interconnect
cable supplied with the test set. The S-parameter test set is then fully controlled by the
analyzer.
BIAS INPUTS AND FUSES. These connectors bias devices connected to port 1 and
port 2. The fuses (1 A, 125 protect the port 1 and port 2 bias lines
Serial number plate. The serial number of the instrument is located on this plate.
EXTERNAL VGA.
VGA output connector provides analog red, green, and blue
video signals which can drive a VGA monitor.