Kenwood NX-300S Service Manual

Also see for NEXEDGE NX-300: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

NX-300(S)40Test Equipment Required for AlignmentTest Equipment Major Specifications1. Standard Signal Generator(SSG)Frequency Range 400 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 400 to 520MHzMeasurement Capability Vicinity of 10W3. Deviation Meter Frequency Range 400 to 520MHz4. Digital Volt Meter (DVM) Measuring Range 10mV to 10V DCInput Impedance High input impedance for minimum circuit loading5. Oscilloscope DC through 30MHz6. High SensitivityFrequency CounterFrequency Range 10Hz to 1000MHzFrequency Stability 0.2ppm or less7. Ammeter 5A8. 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. 8 Dummy Load Approx. 8, 3W12. Regulated Power Supply 5V to 10V, approx. 3AUseful if ammeter equippedADJUSTMENT■ Antenna connector adapterThe antenna connector of this transceiver uses an SMAterminal.Use an antenna connector adapter [SMA(f) – BNC(f) orSMA(f) – N(f)] for adjustment. (The adapter is not providedas an option, so buy a commercially-available one.)■ Nut wrenchIn order to turn the volume nut and the channel selectornut, use a recommendation tool.Kenwood part No.: W05-1123-00■ Battery jig (W05-1370-00)Connect the power cable properly between the batteryjig installed in the transceiver and the power supply, andbe sure output voltage and the power supply polarity priorto switching the power supply ON, otherwise over voltageand reverse connection may damage the transceiver, or thepower supply or both.+ Terminal (Red)- Terminal (Black)Note:• When using the battery jig, you must measure the volt-age at the terminals of the battery jig. Otherwise, a slightvoltage drop may occur within the power cable, betweenthe power supply and the battery jig, especially while thetransceiver transmits.• The battery jig is detected as “Li-ion High Capacity Bat-tery”.Li-ion High Capacity Battery: R1=OpenLi-ion Normal Capacity Battery: R1=560kS–+C1100P/25VC2470P/25VC3100μ/25VR1++Terminal(Red)–Terminal(Black)PowersupplyPowercableSchematic diagram