• |
The frequency of the
low-frequency group:697Hz、770Hz、852Hz、941Hz. |
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The frequency of high-frequency
group:1209Hz、1336Hz、1477Hz. |
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Single frequency deviation of ±
1.5% in the range. |
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Dual tone multi-frequency signal. |
• |
The frequency of the low frequency
level of the single group:-9dBm ± 3dB. |
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Dual-tone multi-frequency signal. |
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High-frequency group level single
frequency:-7dBm ± 3dB. |
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Any combination of frequencies. |
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The frequency group level is higher
than the low base level 2 dB ± 1dB. |
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At least the low overall level
below the fundamental level caused by the harmonic intermodulation
20dB. |
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Conditions of use:Ambient temperature
-10 ℃ ~ +40 ℃. Relative Humidity:10% ~ 95%. |
• |
Environmental Noise:≤60dB(A). Atmospheric
pressure:86~106 kpa. |
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The machine uses 110V AC power
supply. Appearance: standard rack type. |