Measurements And Adjustments; Equipment Required; The Setting Method Of Jig - Panasonic KX-TGC450G Service Manual

11 Measurements and Adjustments
This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement
in [9 Troubleshooting Guide]
11.1 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.
11.2 The Setting Method of JIG
(Preparation)
• Serial JIG cable: PQZZ1CD300E*
• PC which runs in DOS mode
• Batch file CD-ROM for setting: Refer to parts list of
Note:
*: If you have the JIG Cable for TCD500 series (PQZZ1CD505E), change the following values of resistance. Then you can use it
as a JIG Cable for both TCD300 and TCD500 series. (It is an upper compatible JIG Cable.)
Resistor Old value (kΩ)
R2 22
R3 22
R4 22
R7 4.7
11.2.1 Connections (Base Unit)
Connect the AC adaptor.
Connect the JIG Cable GND (black).
Connect the JIG Cable RX (red) and TX (yellow).
Base unit P. C. board
AC adaptor
1
Note:
*: COM port names may vary depending on what your PC calls it.
New value (kΩ)
3.3
3.3
4.7
10
GND
URX
UTX
DC JACK
[15.5.6 Fixtures and Tools]
JIG Cable
2 GND (black)
3 URX (red)
3 UTX (yellow)
- 57 -
To Serial Port
(COM port 1*)
PC