Description
Methods for Connecting External Buttons
KB-2 and KB-1 show the external key interface, which is the first leftmost corresponding common contact of the corresponding interface, which were the phase four legs, their corresponding functions, such as KB-1:1 -2, connected to the full-mode switching functions, such as KB-1:1-4 connected to enable step adjustments.
TCB is above the legs of the coding switch, which, from the point of view of the contact contact switch 2 KB-2, and drawing I, then output 3 KB-2, drawing C continues on the leg KB-2 1.
Connecting the LCD Backlight
It provides LCD backlight connection, 16 feet grounded, 15 feet in series 51 ohm resistor connected to +5 V power supply, if you want to turn off the backlight, you can switch to +5 V control.
- Input: 12 V
- Output: 12 V
- ENC: encoder switch
- MEM: switch for memory mode
- VFO: Transfer from VFO A to VFO B, or from VFO B to VFO A
- SSB: Working mode change: circulate from USB, LSB, AM, CW, and on and on
- RIT: Fine tuning to receiving frequency
- CAL: Set functions
- KB-1 and KB-2 have common shared pin, but is not GND
Basic DDS Instructions and Steps:
| A: ENABLE 6XREFCLE | Setting chip clock mode, adjust frequency encoding setting. AD9851 set to 6-multiply frequency, AD9850 set to 1multiply frequency. Press CAL then quickly release to enter following step B. |
| B: DDS System CLK |
Chip working frequency setting. Use encoder switch to adjust value. Operate in accordance with STEP key. AD9851 set at oscillator 6-multiply channel, AD9850 set at actual output of oscillator. Press CAL then quickly release to enter step C. |
| C: Min RX-DDS FREQ |
Setting minimum working frequency. Use encoder switch to adjust value and in accordance with STEP key. Press CAL then quickly release to enter step D. |
| D: Max RX-DDS FREQ |
Setting maximum working frequency. Use encoder switch to adjust value and in accordance with STEP key. (Smaller than 60 MHz would be OK ). Press CAL then quickly release to enter step E. |
| E: SSB-OFFSET |
Fine tuning for SSB working mode. Use encoder switch to adjust value and in accordance with STEP key. Press CAL then quickly release to enter step F. |
| F: CW-OFFSET | Fine tuning for CW working mode. Use encoder switch to adjust value and in accordance with STEP key.
Press CAL then quickly release to enter step G. |
| G: OFFSET-FREQ |
Setting of offset Frequency. e.g, set to 9MHz or 10.7MHz, use encoder switch to adjust value and in accordance with STEP key. Press CAL then quickly release to enter step H. |
| H: MULTIPLIER | Multiply setting for frequency. Should be set as 1, press CAL then quickly release to enter step I |
| I: | Screen displayes word “SAVE”, automatically save the above setting, and returns to normal working. |
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