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Getting Started
Getting Acquainted with the Analyzer
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AUX INTERFACE provides a nine-pin “D” subminiature connector
for control of external devices. Refer to the specifications and
characteristics in your calibration guide for a more detailed description.
Interface connectors interfaces for
RS-232
(standard) and HP-IB
(Option 021) interface buses that support remote instrument operation
and direct plotting or printing of screen data.
AUX IF OUTPUT is a 50
62,
2 1.4 MHz IF output that is the
down-converted signal of the RF input of the cable TV analyzer.
Amplitude-correction factors are not applied to this signal.
AUX VIDEO OUTPUT provides detected video output (before the
analog-to-digital conversion) proportional to vertical deflection of the
trace. Output is from 0 V to 1 V. Amplitude-correction factors are not
applied to this signal.
EXT TRIG INPUT (TTL) accepts the positive edge of an external
voltage input that triggers the cable TV analyzer internal sweep source.
HIGH SWEEP IN/OUT (TTL) indicates when the cable TV analyzer is
sweeping or can be grounded to stop sweeping.
EXT KEYBOARD connector is provided with the interface connector.
The external keyboard is not included with the cable TV analyzer. The
external keyboard can be used to enter screen titles, prefixes, remote
commands, and writing simple
DLP’s.
CAUTION
Turn off the cable TV analyzer before connecting an external keyboard to the
cable TV analyzer. Failure to do so may result in loss of factory-correction
constants.
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SWEEP OUTPUT provides a voltage ramp proportional to the sweep
and the cable TV analyzer span (0 V to 10 V).
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