Kenwood NX-720H(G) Service Manual

Also see for Nexedge NX-720H: Instruction manual Instruction manual Instruction manual

Contents

NX-720H(G)/720H42ADJUSTMENTTest Equipment Required for AlignmentTest Equipment Major Specifi cations1. Standard Signal Generator(SSG)Frequency Range 100 to 520MHzModulation Frequency modulation and external modulationOutput –127dBm/0.1μV to greater than –20dBm/22.4mVWhen performing the Frequency adjustment, the following accuracy is necessary.• 0.001ppmUse a standard oscillator for adjustments, if necessary.2. Power MeterInput Impedance 50Operation Frequency 100 to 520MHzMeasurement Capability Vicinity of 100W3. Deviation Meter Frequency Range 100 to 520MHz4. Digital Volt Meter (DVM) Measuring Range 10mV to 20V DCInput Impedance High input impedance for minimum circuit loading5. Oscilloscope DC through 30MHz6. High SensitivityFrequency CounterFrequency Range 10Hz to 1000MHzFrequency Stability 0.01ppm or less7. Ammeter 20A or more8. AF Volt Meter (AF VM) Frequency Range 50Hz to 10kHzVoltage Range 1mV to 10V9. Audio Generator (AG) Frequency Range 50Hz to 5kHz or moreOutput 0 to 1V10. Distortion Meter Capability 3% or less at 1kHzInput Level 50mV to 10Vrms11. 4 Dummy Load Approx. 4, 10W12. Regulated Power Supply 13.6V,approx.20A (adiustable from 9V to 17V)Useful if ammeter equipped13. Spectrum AnalyzerFrequency Range 40MHz to 520MHzInput Level Up to +20dBmInput Sensitivity –100dBmResolution Bandwidth 100HzVideo Bandwidth 100Hz14. Tracking Generator Frequency Range 40MHz to 520MHzOutput Level –30dBm to 0dBmTuning cable (E30-3383-05)Adapter cable (E30-3383-05) is required for injecting an au-dio if PC tuning is used.See “PC Mode” section fot the connection.Test cable for microphone input (E30-3360-28)3245678312456781 GREENREDBLACKBLUESHIELDWHITEGRAYYELLOWPTTEMIC-EMICHKMIC connector (Front panel view)181 : MBL2 : +B3 : GND4 : PTT/TXD (PC serial data from radio)5 : MICE6 : MIC7 : HOOK/RXD (PC serial data to radio)8 : DMLead wire +MICShield wire –