Agilent Technologies 8935 series e6380a Manuale Utente
Connectors
Connectors
Chapter 9
284
AUDIO IN
Two connectors are used to input audio signals to the AF analyzer:
• HI is the main audio signal input connection.
• LO is used for the audio signal reference. Three choices are available using the AF
ANALYZER screen’s
Audio In Lo
field:
•
Gnd
connects the center pin through approximately 100
Ω
to chassis ground.
•
Float
is a floating input.
•
600 To Hi
provides a 600
Ω
internal load to match an audio source with an
output impedance of 600
Ω
.
The measured level is the potential between the HI and LO center pins. The shells of
both connectors are at chassis ground.
both connectors are at chassis ground.
For more information see
, and
.
Operating Considerations
Input impedance is switchable between 1 M
Ω
in parallel with 95 pF, or 600
Ω
floating.
This port is selected as the AF analyzer’s input using the
AF Anl In
field on the AF
ANALYZER screen.
Signals input to the AF analyzer are routed through different filters, amplifiers, and
detectors that affect the displayed measurement.
detectors that affect the displayed measurement.
CAUTION
The maximum level between the HI and LO center pins is 42 V peak (approximately 30
Vrms). Exceeding this value can cause permanent instrument damage.
Vrms). Exceeding this value can cause permanent instrument damage.