4 Audio Analyzer Measurement Functions
246 Keysight U8903B User’s Guide
Input Configuration (Analog Analyzer)
The input configuration for analog analyzer is displayed as shown in Figure 4-62.
Figure 4-62 Analog Analyzer > Input Config menu page
Table 4-31 Analog Analyzer > Input Config menu description
Menu Description
Connector
Press the Connector softkey to select the input connector type.
–UnBal
Unbalanced connector type routes the signal from the BNC input connector. The signal in the inner conductor of the
coaxial connector is referenced to the ground for measurement.
–Bal
Balanced connector type routes the signal from the XLR input connectors in the front panel to the analog analyzer. The
signals on the positive and negative pins of the XLR connector enter a differential amplifier where they are subtracted
before passing on to the detector.
– Loopback
Loopback connector type routes the signal from the generator to the analyzer internally.
The generator channel 1 signal will be routed to the analyzer odd channels (1, 3, 5, and 7), and the generator channel 2
signal will be routed to the analyzer even channels (2, 4, 6, and 8).
For example, if you select Loopback in any of the analyzer odd channels, the output connector type of the generator
channel 1 will automatically be set to Loopback.
Impedance
Press the Impedance softkey to select the input impedance value. This setting is only available when Connector is set to
UnBal or Bal.
–100 kΩ (for UnBal)
–200 kΩ (for Bal)
–600 Ω
–300 Ω
Auto Range Press the Auto Range softkey to enable or disable auto range.
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