Measurements And Adjustments; Equipment Required; The Setting Method Of Jig; Connections (Base Unit) - Panasonic KX-TG6841B Service Manual

12 Measurements and Adjustments

This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement in
Troubleshooting Guide (P.32)

12.1. Equipment Required

• Digital multi-meter (DMM): it must be able to measure voltage and current.
• Oscilloscope.
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm)
Hewlett Packard, 53131A is recommended.
• DECT tester: Rohde & Schwarz, CMD 60 is recommended.
This equipment may be useful in order to precisely adjust like a mass production.

12.2. The Setting Method of JIG

<Preparation>
• Serial JIG cable: PQZZ1CD300E*
• PC which runs in DOS mode
• Batch file CD-ROM for setting: PNZZTG6841M

12.2.1. Connections (Base Unit)

Connect the AC adaptor.
Connect the JIG Cable GND (black).
Connect the JIG Cable RX (red) and TX (yellow).
AC adaptor
DC JACK
1
Base unit P. C. board
Note:
*: COM port names may vary depending on what your PC calls it.
KX-TG6841B/KX-TG6842B/KX-TG6843B/KX-TG6844B/KX-TG6845B/KX-TG6873B/KX-TGA680B
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E),
resistance. Then you can use it as a JIG Cable for both
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
Resistor
R2
R3
R4
R7
JIG Cable
3
3
UTX
URX
GND
2
GND (black)
53
change the following
Old value (kΩ) New value (kΩ)
22 3.3
22 3.3
22 4.7
4.7 10
UTX (yellow)
To Serial Port
URX (red)
(COM port 1*)
values of
PC