Panasonic KX-TG2873BXS

77
KX-TG2873BXS/KX-TGA280BXS
13.8. Input Level
(*1) RX (Handset), RX (SP-phone), and RX (Cordless Handset);
• T-R (CN100: 3-4 pin)
• TEST SIGNAL FREQUENCY: 1 kHz
(with FEEDING Bridge circuit at IL = 80 mA)
• The signal is input to between T-R, with the generator that set the output to -20 dBm.
Note:
When measured by you, please mute MIC.
TX (Handset);
• T-R (CN100: 3-4 pin)
• about 600 mVpp
• about: -11.5 dBm (600 ohm)
TX (SP-phone);
• T-R (CN100: 3-4 pin)
• about 1.44 Vpp
• about: -3.8 dBm (600 ohm)
TX (Cordless Handset);
• T-R (CN100: 3-4 pin)
• about 640 mVpp
• about -11.0 dBm (600 ohm)
(*2) RX (Handset);
• LSR + (TP225) to DG and LSR - (TP222) to DG
• about 600 mVpp (Vol: max)
• DC-REF: about 900 mV
(*3) TX (Handset);
• MIC_in (MIC+: TP224) to (MIC-: TP221)
• TEST SIGNAL FREQUENCY: 1 kHz
• The signal is input to MIC_IN, with the generator that set the output to -40 dBm. (with HS JIG (Terminate 2.2 kohm)
(*4) RX (SpeakerPhone);
• SP + (TP223) to DG and SP - (TP227) to DG, with SP (16 ohm)
• about 900 mVpp (Vol: max)
• DC-REF: about 2.5 V
(*5) TX (MIC);
• MIC_Assy_in (MIC+: TP903 = HFMIC) to (MIC-: TP904 = DG)
• TEST SIGNAL FREQUENCY: 1kHz
• The signal is input to MIC_in, with the generator that set the output to -50 dBm. (with HS JIG (Terminate 2.2 kohm)
(*6) RX (Cordless Handset);
• RCV1 + to DG and
• RCV1 - to DG, with Receiver
• about 400 mVpp (Vol: max)
• DC-REF: about 900 mV
(*7) TX (Cordless Handset);
• HSMIC (+) to HSMIC (-)
• TEST SIGNAL FREQUENCY: 1kHz
• The signal is input to MIC_IN, with the generator that set the output to -40 dBm. (with HS JIG (Terminate 2.2 kohm)