Icom IC-78 Instruction Manual - Page 8

2 PANEL DESCRIPTION D ACC SOCKET INFORMATION • ACC socket ACC 13 9 10 11 12 5678 1 2 34 Rear panel view PIN # NAME DESCRIPTION 1 8 V Regulated 8 V output. SPECIFICATIONS Output voltage : 8 V ±0.3 V Output current : Less than 10 mA 2 GND Connects to ground. - 3 SEND Input/output pin. Goes to ground when transmitting. When grounded, transmits. Ground level Input current : -0.5 V to 0.8 V : Less than 20 mA 4 BDT Data line. - 5 BAND Band voltage output. 6 ALC ALC voltage output. Control voltage : -4 V to 0 V Input impedance : More than 10 kΩ 7 NC - - - 8 13.8 V 13.8 V output when power is ON. Output current : Max. 1 A 9 TKEY Key line. - 10 FSKK RTTY key input. Ground level : -0.5 V to 0.8 V Input current : Less than 10 mA 11 MOD Modulation input. Input impedance : 10 kΩ Input level : Approx. 100 mV rms 12 AF AF detector output. Output impedance: 4.7 kΩ Fixed, regardless of [AF] position. Output level : 100-300 mV rms 13 SQLS Squelch output. SQL open Goes to ground when squelch opens. SQL closed : Less than 0.3 V/5 mA : More than 6.0 V/100 µA • When connecting the ACC conversion cable (OPC-599) 13 9 10 11 12 5678 1234 2 4 5 1 3 8 6 7 ACC 1 2 4 5 1 3 6 7 ACC 2 Œ FSKK  GND Ž SEND  MOD  AF ‘ SQLS ’ 13.8 V “ ALC Œ 8 V  GND Ž SEND  BAND  ALC ‘ NC ’ 13.8 V 6