40 Base Station Specifications TB9300 Specifications Manual
© Tait International Limited August 2022
1.8.5 Audio Delay
Transmit direction: 70 ms max (signal applied to a balanced input)
Receive direction: 70 ms max (signal sampled on a balanced output)
Delay distortion:
≤ 40 µspp 300 Hz to 3 kHz (relative to 1 kHz)
Delay distortion is the pulse distortion that arises because different fre-
quency components have different delays.
1.8.6 Rx Gate Output
The Rx gate output indicates a valid analog received signal.
Logic state: Active low
Logic type: Open drain transistor connection
The Rx Gate output is not the same as an M-wire output:
Large negative voltages (traditionally associated with E&M signaling)
can damage the reciter hardware when applied directly.
Tait offers an isolation adapter that provides E&M isolated signaling
(order number TBC101A).
Electrical Characteristics
Parameter Specification Comments
Low voltage level <0.4 V Rx gate activated
High voltage level 0 to 30 V Protection
Low level output current <250 mA
High level output current <100 µA at 30 V
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