Icom IC-7000 Instruction Manual - Page 30

2 INSTALLATION AND CONNECTIONS ■ Linear amplifier connections Use the [ANT1] connector when connecting an HF/50 MHz linear amplifier. CONNECTING THE IC-PW1/EURO To an antenna ACC-1 Remote control cable (supplied with the IC-PW1/EURO) ACC cable (supplied with the IC-PW1/EURO) 7-pin side ANT REMOTE OPC-599 conversion cable ACC REMOTE INPUT1 GND EXCITER 1 1&2 GND IC-PW1/EURO AC outlet ( ) Non-European versions : 100-120/200-240 V European version : 230 V Transceiver Coaxial cable (supplied with the IC-PW1/EURO) ANT1 Ground CONNECTING A NON-ICOM LINEAR AMPLIFIER R WARNING!: Set the transceiver output power and linear amplifier ALC output level referring to the linear amplifier instruction manual. Be sure the linear amplifier keying circuit control voltage is compatible with the IC-7000, before connecting to the HSEND line (ACC cable). The ALC input level must be in the range 0 V to -4 V, and the transceiver does not accept positive voltage. Non-matched ALC and RF power settings could cause a fire or damage the linear amplifier. The IC-7000 SEND line (ACC connector pin 3) is rate at 16 V/200 mA DC. If this level is exceeded, a larger external relay must be used. When the HSEND (or VSEND) terminal controls the inductive load (such as a relay), a counterelectromotive force can cause the transceiver's malfunction or damage. To prevent this, we recommend adding a switching diode, such as an "1SS133," on the load side of the circuit to the counter-electromotive force absorption. When the diode is added, a switching delay of the relay may occur. Be sure to check its switching action before operation. 21 To an antenna RF OUTPUT RF INPUT ALC SEND 50 Ω coaxial cable HSEND (Orange) Transceiver GND Relay Switching diode [ACC] [ANT1] Ground ACC cable 13.8V (Gray) ALC (Blue)