Icom IC-7300 Basic Manual

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Icom IC-7300 Basic Manual Manual pdf 66 page image

12 CONNECTOR INFORMATION12-1ACC socketConnects to external equipment or a PC to control theexternal unit or to control the transceiver.• ACC socketACC PINNo. NAME DESCRIPTION SPECIFICATIONS1 8 VRegulated 8 V output.( Used as the reference voltage for theband voltage.)Output voltage:Output current:8 V ±0.3 VLess than 10 mA2 GND Connects to ground. —3 SEND*1 Input/outputpin.An external unitcontrols the transceiver.When this pin goes toground, the transceivertransmits.Input voltage (RX):Input voltage (TX):Current flow:2.0 to 20.0 V–0.5 to +0.8 VMaximum 20 mAThe pin goes lowwhen the transceivertransmits.Output voltage (TX):Current flow:Less than 0.1 VMaximum 200 mA4 BDT Not used. —5 BANDBand voltage output.( Varies with the selected amateurband)Output voltage: 0 to 8.0 V6 ALC ALC voltage input. Input level:Input impedance:–4 to 0 VMore than 3.3 kΩ7 NC — —8 13.8 V 13.8 V output when power is ON. Output current: Maximum 1 A9 TKEY Not used. —10 FSKK Controls RTTY keying.High level:Low level:Output current:More than 2.4 VLess than 0.6 VLess than 2 mA11 MOD Modulator input. Input impedance:Input level:10 kΩ100 mV rms* 312 AF/IF(IF=12 kHz)* 2Fixed AF detector or receive IF(12 kHz) signal output.Output impedance:Output level:4.7 kΩ100 ~ 300 mV rms * 413 SQL S Squelch output.Grounded when the squelch opens.SQL open:SQL closed:Less than 0.3 V/5 mAMore than 6.0 V/100 μA1 2 3 487659 10 11 121313-pinRear panel viewq brownw rede oranger yellowt greeny blueu purplei grayo white!0 black!1 pink!2 lightblue!3 lightgreenColor refers to thecable strands of thesupplied cable.* 2 You can change the pin 12 setting in the “ACC/USBOutput Select” item on the CONNECTORS set screen.If the pin is set to IF, the transceiver outputs a 12 kHz IFsignal from [ACC]. In that case, you can listen to the DRMbroadcast with the application software receiver that isinstalled into your PC.* 3 You can change the input level in the “ACC MOD Level”item on the CONNECTORS set screen. (p. 8-5)100 mV rms is at the 50% (default) setting.* 4 You can change the output level in the “ACC/USB AFOutput Level” item on the CONNECTORS set screen.(p. 8-5)Approximately 200 mV rms is at the 50% (default) setting.* 1 When the SEND terminal controls an inductive load, suchas a relay, a counter-electromotive force can malfunctionor damage the transceiver. To prevent this, we recommendadding a switching diode, such as an 1SS133, on the loadside of the circuit to absorb the counter-electromotive force.When the diode is added, a delay in relay switching mayoccur. Be sure to check its switching action before operating.(Example) ACC socket To a non-Icomlinear amplifierRelaySwitching diodee SENDi 13.8 V