13
11. OUTPUT CONNECTORS
AC Output:
An AC signal corresponding to the frequency-weighted signal is available at this
connector.
Output voltage: 1Vrms
±
100mVrms (scale upper limit)
Output impedance: approx. 5k
Ω
Load impedance:
≧
1M
Ω
The output voltage when the instrument is in calibration mode
(-6dB from scale upper limit, 1000Hz sine wave) is 0.5Vrms.
DC Output:
A level-converted DC signal generated by RMS detection and logarithmic
compression is available at this connector. The signal reflects the frequency and time
weighting settings of the instrument.
Output voltage: 10mV
±
0.1mV/dB
Output impedance: approx. 5k
Ω
Load impedance:
≧
1M
Ω
The output voltage when the instrument is reading 94dB is nominally 0.94V DC.
12. RS-232 INTERFACE, SOFTWARE INSTALLATION AND OPERATION
For the detailed instruction, please refer to the content of attached CD-ROM, which
has the complete instruction of RS-232 interface, software operation and relevant
information.
RS-232 protocol : are enclosed within the content of CD-ROM, please open the
CD-ROM for details.
