The Anritsu MS8604A is a digital mobile radio transmitter tester that evaluates transmitter characteristics across multiple global communication standards in a single instrument. It delivers high-speed modulation measurements in under 1 second and incorporates built-in Digital Signal Processing with proprietary algorithms to streamline manufacturing test cycles and production inspection workflows.
## Technical Specifications
**Frequency Range:** 100 Hz to 8.5 GHz
**Input Level:** 10 to 40 dBm burst average power; low power-input connector enables measurements 20 dB below these levels. Maximum input: +40 dBm (10 W continuous wave average power).
**Frequency Accuracy:** ±(Accuracy of reference oscillator +1 Hz) or ±(Accuracy of reference oscillator +10 Hz)
**Modulation Accuracy:** 2σ of indicated value ±0.5% or 2σ of indicated value ±0.7%
**Transmission Rate Accuracy:** 1 ppm across measuring range of 48.6 kbps ±100 ppm, 42 kbps ±100 ppm, and 384 kbps ±100 ppm
**Measurement Time:** 1 second (standard); 3 seconds (transmission rate measurement)
## Key Features
• Direct RF signal measurement to 10 W average burst power with internal 20 dB attenuator and power meter
• Fast modulation accuracy evaluation and constellation display with scaled modulation error visualization
• Rise/fall edge characteristic displays and burst rise measurement (e.g., PHS)
• Baseband device evaluation via optional I/Q signal input
• Dual IEEE 488.2 GPIB ports (GPIB 1 and GPIB 2) with optional RS-232C interface
• PTA (Personal Test Automation) for custom test procedure programming
## Measurement Capabilities
The MS8604A characterizes carrier frequency, modulation accuracy, antenna power, carrier-off leakage power, transmission ramp-up/ramp-down behavior, occupied bandwidth, adjacent channel power, spurious emissions, and signal transmission rate across a broad frequency span.
## Compatibility & Integration
Supports PDC, PHS, NADC, Digital MCA, GSM, DCS1800 (PCN), CT2, DECT, WCPE, PACS, RCR STD-39, and TETRA standards. GMSK and π/4 DQPSK universal analysis functions enable modulation signal analysis. System-specific measurement software available as options for PDC, PHS, NADC, Digital MCA, GMSK, and π/4 DQPSK.
