Page 108 FT-2000D OPERATING MANUALPacket operation is easily accomplished on the FT-2000D by connecting your TNC (Terminal Node Controller) to thetransceiver, per the illustration. “Packet” operation also applies to SSB-based AFSK data modes, such as PSK31, etc.PACKET O PERATIONPACKET S ETUP (I NCLUDING S UBCARRIER F REQUENCY)Before operation can commence,some basic setup procedures mustbe performed, using the Menu, toconfigure your radio for the datamode to be used.BASIC S ETUP1. Press the [PKT] button.ADVICE: For HF operation, SSB-based Data operation is gen-erally used. One press of the [PKT] button willengage Packet operation in the “LSB” mode (bydefault). Both the “PKT” and “LSB” LEDs willbecome illuminated. If you need to do FM-based 1200-baud packet onthe 29/50 MHz bands, press the [PKT] button re-peatedly to illuminate the “PKT” LED to orange,to engage the “PKT-FM” mode. When both the “PKT” and “USB” LEDs are illu-minated, the FT-2000D has engaged Packet op-eration in the “USB” mode.2. When the “transmit” command is received from theTNC, the transmitter of the FT-2000D will automati-cally be engaged. Likewise, the command to return toreceive will cause the radio to revert to the receivemode.ADVICE: If you need to adjust the output level from the “DATAOUT” pin of the PACKET jack (pin 4) on the radio,please use Menu item “067 dAtA OUT LVL.” For theinput level from the TNC, as applied to the DATA INpin of the PACKET jack (pin 1), please do so at theTNC side. During Packet operation via the rear panel’s PACKETjack, the front panel MIC jack is cut off, so you won’thave a “live microphone” problem during data opera-tion.NOTE:If you anticipate making data transmissions of longer thana few minutes, we recommend that you use the [RF PWR]knob to reduce the transmitter power to 1/3 ~ 1/2 of itsnormal maximum.QUICK POINT:PACKET Jack Specifications DATA IN (Pin 1)Input Level: 50 mVp-pInput Impedance: 10 k-Ohms DATA OUT (Pin 4)Fixed level, does not respond to setting of [AF GAIN]or [SQL] knob.Output Level: 100 mVp-p max.Output Impedance: 10 k-OhmsMENU ITEM AVAILABLE VALUES064 dAtA DATA IN dAtA (DATA) / PC (PC)065 dAtA DT GAIN 0 ~ 100066 dAtA DT OUT nAin (Main) / Sub (Sub)067 dAtA OUT LVL 0 ~ 100MENU ITEM AVAILABLE VALUES068 dAtA VOX DLY 30 ~ 3000 msec069 dAtA V GAIN 0 ~ 100070 dAtA PKTDISP –3000 ~ +3000 Hz071 dAtA PKT SFT –3000 ~ +3000 HzDATAOUTPTTDATAIN①⑤④③②PACKET PACKET JACK TNCPin 1 (DATA IN)Pin 2Pin 3Pin 4Pin 5(GND)(PACKET PTT)(DATA OUT)(BUSY)DATA OUTGNDPTTDATA IN(SQL Control)