Panasonic KX-TG2448BXF Service Manual

Contents

7.4.3. Check Table for RF partNo. Item BU (Base Unit) Check HS (HandSet) Check1 Link Confirmation NormalHS, BU Mode [Normal Mode]1. Register Regular HS to BU (to be checked).2. Press [Talk] key of the Regular HS toestablish link.1. Register HS (to be checked) to Regular BU.2. Press [Talk] key of the HS to establish link.2 Control signal confirmationHS, BU Mode: [Test Burst Mode] (*1)Check DSP interface. (*2) Check DSP interface. (*2)3 X’tal Frequency confirmation (*7)HS, BU Mode: [Adjustment] (*3)Check X’tal Frequency.(13.824000MHz ±100Hz)Check X’tal Frequency.(13.824000MHz ±100Hz)4 TX Power confirmationRegular HS, BU Mode:[RX-CW Mode.] (*4)HS, BU (to be checked) Mode:[Test Burst Mode.] (*1)1. Place the Regular HS about 15cm awayfrom the BU.2. Confirm that RSSI of the Regular HS isapproximately 2V by Oscilloscope. (*5)1. Place the HS about 15cm away from theRegular BU.2. Confirm that RSSI of the Regular BU isapproximately 2V by Oscilloscope. (*6)5 RX Sensitivity confirmationRegular HS, BU Mode:[Test Burst Mode.] (*1)HS, BU (to be checked) Mode:[RX-CW Mode.] (*4)1. Place the Regular HS about 15cm awayfrom the BU.2. Confirm that RSSI of the BU isapproximately 2V by Oscilloscope. (*5)1. Place the HS about 15cm away from theRegular BU.2. Confirm that RSSI of the HS isapproximately 2V by Oscilloscope. (*6)6 Range Confirmation NormalHS, BU Mode: [Normal Mode]1. Register Regular HS to BU (to be checked).2. Press [Talk] key of the Regular HS toestablish link.3. Compare the range of the BU (beingchecked) with that of the Regular BU.1. Register HS (to be checked) to Regular BU.2. Press [Talk] key of the HS to establish link.3. Compare the range of the HS (beingchecked) with that of the Regular HS.Note:(*1)(*3)(*4) ADJUSTMENT AND TEST MODE (P.31)(*2) RF-DSP Interface Signal Wave Form (P.28)(*5) Base Unit Reference Drawing (P.40)(*6) Handset Reference Drawing (P.41)(*7) X501 (Base Unit), X201 (Handset) Check (P.39)26KX-TG2448BXF / KX-TG2448BXS / KX-TGA254BXF / KX-TGA254BXS