THIS PRODUCT IS NO LONGER IN PRODUCTION
The Model 540 connects to the composite/MPX output of any FM modulation monitor. Setup is simplified with a built-in calibration utility. The 540 is tuned in 1kHz steps to display the injection level of any digital or analog subcarrier between 55kHz and 99kHz. A dual-bandwidth IF accommodates wide and narrow subcarrier signals.
Conventional analog SCAs are demodulated to show the actual subcarrier deviation, and an RS-232 interface is optionally available for downloading and reading RDS/RBDS data groups.
54kHz to 99kHz, in 1 kHz increments
±1kHz to ±10kHz of main carrier deviation with ±250kHz measurement resolution
1% to 13% of main carrier modulation with 1/3% measurement resolution (100% equivalent to ±75kHz deviation)
Wide: 12kHz filter for SCA and certain high-speed data channels
Narrow: 3.5kHz filter for RDS and similar narrowband data services
Absolute: ±1kHz to ±10kHz audio subcarrier deviation with ±250Hz resolution
Relative: dB scale covers – 20dB to +2.5dB. “0dB” is factory set to ±5kHz deviation; may be recalibrated by user
Total, main-channel carrier deviation is monitored in the CALIBRATE mode, and the INPUT GAIN control is adjusted to reflect the station’s primary mod-monitor readings.
The 38-segment bargraph display is peak-responding and features a peak-hold function.
±0.5dB, 50Hz to 10kHz. Switch-selection of FLAT or 150-microsecond DE-EMPHasis.
Better than 40dB below ±5kHz deviation.
Real-panel: Active-balanced SCA program output at 0dBm level
Front-panel: Headphone jack monitors SCA audio, switches to main channel (mono) in CALIBRATE mode.
Unbalanced, 100k-Ohm-bridging: requires 1V p-p or greater input signal level representing ±75kHz main channel deviation.
Easily-installed plug-in module formats RDS data to RS-232 standards. Supplied software enables detailed RDS data analysis with any IBM-compatible PC.
105-130VAC and 210-260VAC; 50/60Hz; 20W.