Procedure 1. Connect the Choronometer to TP218. 2. Connect the B/U and ACC line, and Turn on the ACC switch. 3. LCD display change Ver.---, While holding the buttons of MENU,M1,M5 and POWER. 4. Adjust TC201 so that an output of TP218 becomes 0.0 +0.2/-0.0Sec./day. 1. Input the 98.1MHz/55dBu(1kHz 22.5kHz Div.) SSG signal. 2. Set the output to 0dBm(1V)by main volume. 3. Adjust VR102 so that the output level is -18+3/-3dB down when the output of SSG is set to -20dBu. Connect the SSG to Main antenna (Red) side. Set the minimum VR101. Input the 98.1MHz/1kHz 22.5kHz(30%) Div. SSG signal. Input the 26dBu SSG signal and adjust VR101 so that an output of TP101(DIVADJ) becomes High from Low. 5. Confirm that TP101(DIV-ADJ) becomes Low from High within about three seconds of input the 22dBu SSG signal. 6. Confirm that TP101(DIV-ADJ) becomes 10.0V from 2.0V within about one second of input the 30dBu SSG signal. 7. Confirm that TP101(DIV-ADJ) is as follows 1.0V within five seconds of input the 20dBu SSG signal.
RR RH(+) RR RH(-) MUTE BACK UP RR LH(+) RR LH(-) FL FR LH(+) FR AM FR LH(-) RL
Measuring instrument
Choronometer
FM noise convergence
SSG Milli-volt meter
FM DIV.
1. 2. 3. 4.
FR RH(-) STBY
SSG Milli-volt meter Oscilloscope
BLOCK DIAGRAM
Main section
J401(POWER/SP) ILLACC GND
