The Wiltron 9041 is a transmission level and return loss measuring set engineered for precision network analysis in telecommunications testing. It measures transmission level, receive frequency response, echo return loss (ERL), and singing return loss (SRL) across 4-wire, 2-wire, 600 ohm, and 900 ohm circuits. The instrument meets or exceeds Western Electric Specification KS 20501 for through and terminal balance, plus Bell System, USITA, and CCITT requirements.
Technical Specifications
Transmission Level Measurements
• Measurement range: +12 dBm to −48 dBm
• Bandpass: 200 Hz to 5 kHz
• Accuracy at 1 kHz: ±0.1 dB from +12 dBm to −28 dBm; ±0.2 dB from −28 dBm to −48 dBm
• Meter calibration: Linear in dB from +2 to −8 dBm
• ADD dB control: +10 to −40 dBm
Return Loss Measurements
• Measurement range: −10 dB to 50 dB
• Meter calibration: Linear in dB from 0 to 10 dB
• ADD dB control: +10 to +40 dB in 10 dB steps
Return Loss Bandwidths
• Echo return loss (ERL): 560 to 1965 Hz (−3 dB)
• Singing return loss low: 260 to 500 Hz (−3 dB)
• Singing return loss high: 2200 to 3400 Hz (−3 dB)
Frequency Response Accuracy
• ±0.05 dB from 500 Hz to 2500 Hz
• ±0.1 dB from 200 Hz to 500 Hz and 2500 Hz to 5000 Hz
4-Wire Trans-Hybrid Loss Correction
• Correction range: Up to 30.8 dB in 0.2 dB steps
Longitudinal Balance
• >70 dB at 100 Hz
• >55 dB at 3 kHz
– Key Features
• Detachable case lid with NBO/DBO capacitors for hybrid circuit simulation
• Capacitive AC short circuit available for safe trunk testing
• Internal rechargeable battery: up to 8 hours operation; 10 hours recharge time
• Low power consumption: 5 watts
– Electrical Requirements
• Input voltage: 115 V or 230 V AC, 50 to 400 Hz
– Typical Applications
Circuit order testing, balance analysis, network performance verification, and transmission loss characterization for telecommunications infrastructure.
