The Motorola R2001C is a communications system analyzer that integrates signal generation, frequency measurement, modulation analysis, power measurement, and oscilloscope functionality into a single platform. Designed for testing and servicing two-way radio equipment, it streamlines diagnostic and repair workflows by consolidating multiple test instruments into one unit.
Technical Specifications
Frequency Coverage
• RF Signal Generator: 10 kHz to 1000 MHz
• Frequency Counter: 10 Hz to 35 MHz
• Carrier Frequency Error Measurement: Up to 1000 MHz
Signal Generation
• Modulation modes: AM, FM, CW, DSB
• Output Level: Up to 1 volt RMS
• Internal 1 kHz tone generator with multi-mode code synthesizer (Private Line, Digital Private Line)
• External modulation input supported
• Duplex Generator: Offset frequencies for VHF, UHF, and 800 MHz bands with selectable high or low side offset
• Sweep Generator: RF output swept across programmed frequency band
Measurement Capabilities
• Spectrum analysis via signal analyzer
• Frequency measurement: 10 Hz to 35 MHz
• Power measurement: 0.1 watt to 125 watts (forward and reflected antenna power with ST-1200 series wattmeter elements)
• Modulation analysis: Distortion/Sinad metering
• Digital Voltmeter: 1 V, 10 V, 100 V, 300 V full scale ranges (AC true RMS or DC); AC bandwidth 50 Hz to 10 kHz for ±50% F.S. accuracy; dBm calibration at 600 ohms
Oscilloscope
• Bandwidth: DC to 500 kHz or 50 Hz to 500 kHz AC mode (±3 dB)
• Vertical: 10 mV, 100 mV, 1 V, 10 V per division
• Horizontal Sweep: 1 μs, 10 μs, 0.1 ms, 1 ms, 0.015 s, 0.18 s per division
• Trigger Modes: Internal, normal, automatic with adjustable trigger level
Code Synthesizer
• Encode: Up to ten tones, 5.0 Hz to 19999.9 Hz; durations 5 msec to 9999 msec
• Decode: Ten tones, 300 Hz to 9999 Hz; durations 15 msec to 9999 msec
Input/Output Interfaces
• RF In/Out: 50 ohms nominal
• External Modulation Input: 10 kΩ nominal, 150 mV typical (20 kHz FM deviation or 80% AM)
• Microphone Input: Bias and IDC limiting for standard Motorola handsets
• PTT Input: Monitor-to-generate switching
• External Horizontal Input: 1 MΩ impedance, 40 pF nominal; ±300 Vdc max, 300 Vrms max below 500 Hz, 10 Vrms max to 35 MHz
– Key Features
• Multi-function platform eliminates need for separate test instruments
• Modular power supply architecture (LVPS and HVPS components)
• All-in-one diagnostic solution for two-way radio systems
– Typical Applications
• Two-way radio testing and commissioning
• Communications equipment service and repair
• Frequency and modulation verification
• Antenna power analysis
• Signal integrity diagnostics
– Compatibility & Integration
Designed for Motorola communications equipment with standard 50 ohm RF interfaces and support for Private Line and Digital Private Line tone/code generation.
