Audio Ac Level Measurement; Measurement Procedure - Agilent Technologies PSA Series Manual

Audio AC Level Measurement

This procedure describes how to make a Audio AC Level measurement. In this
measurement example, a signal generator is the UUT and is adjusted to deliver a
test signal. Audio AC Level measurement is used to measure and display the true
RMS level of an audio signal. The maximum measurable input level is 3 Vrms.
Make sure your input audio signal is under the allowed maximum safe input level
CAUTION
printed near the audio input connector.
You can make Audio AC Level measurements without a Power Meter since it is
NOTE
the PSA that measures the Audio AC Level.
Make sure the input and output impedance are matched. The PSA audio input has a
TIP
high impedance of 100 kΩ. The output impedance of your audio source may
impact the RMS level reading.

Measurement Procedure

Press the Restart key to optimize the measuring receiver configuration if you make
CAUTION
any changes to the UUT or to the measuring receiver settings after you make your
first measurement.
Step 1. Setup the system. See
Step 2. Make sure you have selected
Step 3. Adjust the signal generator to the desired settings for your test.
Step 4. Press
When the measurement is completed, the measurement result will display.
Step 5. To adjust the measurement settings, press
1. To change the average number between
When setting to
default number is 25 when switching to
during the average period, wait until the averaging is done or the next
averaging period starts.
2. To change the average mode, toggle the
Repeat
Chapter 3
Figure 3-23, "Audio Test Connection
Measuring Receiver
key. Wait for the measurement to be completed.
Audio AC Level
, enter the number. The default average setting is
On
. The default average mode is
Making Measurements
Audio AC Level Measurement
Diagram.".
mode in the
MODE
, then:
Meas Setup
and , press the
On Off Avg Number
. When the input signal is changed
On
key between
Avg Mode
.
Repeat
key menu.
key.
and the
Off
and
Exp
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