NJW1124
6.Monitor Terminal
Monitor Terminal switches Voltage mode depending NJW1124 condition.
NJW1124 condition : Monitor Terminal Voltage
Receive mode
V+
Transmit mode
GND
Idle mode
Hi-Z or (V+/2)
7.Level Detector Block
The NJW1124 includes Level Detector Block and Background Noise Monitor on transmit block and receive block.
Level Detector Block consists of two same detectors.
Fig.7 shows Level Detector block.
The signal(S1 to S4) output each detector transmits to attenuator controller to change the mode.
Next 7.1 and 7.2 explain about each detector and Background Noise Monitor operation details.
About S1 to S4 signals, refer to 8 part.,
Tx : TLO2
Rx : RLO1
Tx : TLI2
Rx : RLI1
Level
Detector
Circuit
Background
Noise
Monitor
Tx : S3
Rx : S4
Tx : RLI2
Rx : TLI1
Level
Detector
Circuit
Tx : S1
Rx : S2
Tx:RLO2
Rx:TLO1
Fig.7 Level Detector Block
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