Specifications

- 42 -
AS/CA S002:2010 COPYRIGHT
OCTOBER 2010
6.7.13 Service tone detection
Performance of service tone detectors should be verified at levels of
–9 dBm and –24 dBm using the test configuration of Figure 23 with
the spectrum analyser and resistor ‘R’ replaced with a service tone
generator to provide frequency and cadence of the applicable
pre-answer tones as detailed in Appendix A.
6.7.14 Longitudinal power limits
The CE under test should be connected to the measuring instrument
as shown in Figure 27. A selective measuring set or spectrum
analyser having an effective bandwidth sufficiently narrow to
measure individual spectral components should be used to explore
the frequency band from 3.4 kHz to 30.175 MHz and to measure the
RMS voltage (V) of any spectral component either using the internal
calibration or from comparison with a sinusoidal signal of known RMS
voltage and the same frequency.
When measuring the longitudinal power generated by the CE during
the ringing state, the CE is to be tested with a continuous ring signal
for sufficient time to enable longitudinal signal measurement to be
performed. The test configuration of Figure 19 can be adapted but
with the artificial line removed.