Chapter 4 Operation
26
4.1
Selection and Setting of Receiving Frequency
(Automatic Frequency Selection)
A facsimile broadcasting station broadcasts the same program on multiple frequencies at the same time.
When a facsimile broadcasting is received, the received image quality depends upon the propagation
conditions of the selected received frequency. The propagation conditions of the broadcasting
frequencies are different in season, daytime and nighttime, and place of receiving. Since the best
received frequency is not absolutely fixed, it is necessary to select the best received frequency to record
the good quality image whenever it is received.
JAX-9B Facsimile Equipment incorporates the functions of automatically selecting and setting the best
received frequency of the specified frequencies (automatic frequency selection).
4.1.1
Setting Receiving Frequency
The receiving frequency can be preset in the following two methods:
a) Method of setting a receiving frequency by ten-key entry.
b) Method of recalling a frequency channel (00 - 99) and setting the best frequency.
1) Setting of Receiving Frequency by Ten-key Entry
Enter a desired receiving frequency digit by digit using ten-key switch.
JAX-9B starts receiving a facsimile image on the indicated frequency.
2) Recalling and Setting Frequency Channel (00 – 99)
Enter a frequency channel (00 – 99) on which a desired receiving frequency is registered.
JAX-9B starts receiving a facsimile image when the registered frequency is read out.
(Single) frequency channel
The receiving is started on a single registered frequency.
A maximum of 90 frequencies can be registered in a single channel.
* For the available channel numbers, refer to Table 4.1.
Group channel
The automatic frequency selection function can be performed on multiple frequencies registered
in a group channel and start receiving a selected frequency that is determined as good.
A maximum of 10 group channels are available.
* For the available channel numbers, refer to Table 4.1.
NOTE
You cannot register any frequencies in group channels.
Summary of Contents for JAX-9B
Page 2: ......
Page 9: ...Equipment Appearance vii JAX 9B Weather Facsimile Receiver External Appearance...
Page 19: ...Chapter 1 General Outline of Equipment 5 1 5 System Diagram 220Vac...
Page 20: ...Chapter 1 General outline of Equipment 6...
Page 92: ...Chapter 5 Maintenance 78...
Page 98: ...Chapter 8 Operating Environment 84...
Page 100: ...Chapter 8 Operating Environment 86...
Page 103: ...Chapter 10 Disposal 89...
Page 107: ...Appendix 93 Appendix figure 2 JQD 69C Junction Box 110 1 160...
Page 108: ...Appendix 94 Appendix figure 3 NBA 5143 Rectifier Unit 120 2 170 2 130 1 MAX 20 20 20...
Page 110: ...Appendix 96 Appendix Figure 4 Interfered reception example 1...
Page 111: ...Appendix 97 Appendix Figure 5 Interfered reception example 2...
Page 112: ...Appendix 98 Appendix Figure 6 Interfered reception example Multi path echo...
Page 113: ...Appendix 99 Appendix Figure 7 Interfered reception example Fading...
Page 114: ...Appendix 100 Appendix Figure 8 Interfered reception example Different reception frequencies...
Page 117: ......
