Chapter 4 Performance Test
4-8
4.3.2 Input level accuracy
(1) Measuring instrument for tests
Audio Analyzer: U8903A
(2) Setups
Below is the connection when the U8903A is used as Audio Signal
Generator.
Figure 4.3.2-1 Connection for Input Level Accuracy Test
(3) Test target standards
Table 4.3.2-1 Standard
Standard Condition
±0.4 dB 18 to 28°C
(4) Test Procedure
Table 4.3.2-2 Setting Level
No.
MS2830A Audio Analyzer
Level Range (mV peak)
U8903A Output Level
(mV rms)
1 5000
3500*
2 500
350.0*
3 50
35.00*
*: The input level to the MS2830A Audio Analyzer in Figure 4.3.2-1.
Set the correction value of Syscal_Unbal/Syscal_Bal acquired in
4.3.1 “Output level calibration” in the U8903A.
Table 4.3.2-3 Frequency Setting
No. Frequency (Hz)
1 400
2 1000
U8903A
MS2830A
Coaxial Cable