Belar FMHD-1, Operator'S Manual

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FMHD-1 Operator’s Manual
BELAR ELECTRONICS LABORATORY, INC. Page 3
Ethernet controller are also installed using a PC (with internet access) communicating with the FMHD-1
through either the RS-232 or the RJ-45 rear-panel port.
1.4 Electrical and Mechanical Specifications
RF Inputs
Frequency Range ............................................... 87.3 to 108.1 MHz, Frequency Agile, 100-kHz Increments
High Level Input .......................................................................... 1Vrms to 10 Vrms,
50Ω, BNC Connector
Antenna Input........................................ 2.2mV sensitivity
2
, 75Ω, F-type Connector, 500mVrms maximum
Audio Outputs
Analog Outputs (8 assignable) .................................................
+10 dBm, 600Ω balanced, XLR Connector
AES-3ID (6 assignable)......................................................................... 1.0 Vpk-
pk, 75Ω, BNC Connector
Headphone (1 assignable) .................................................................................................. 1/4" Phone Jack
Indicators
Analog
Total Peak Modulation ● Analog L+R Presence ● RF Presence ● Pilot Presence ● HD Station ●
Digital Audio Acquisition
● SIS CRC ● Audio Time Alignment ● Audio Amplitude Alignment ●
Audio Polarity
● HD Program Presence (8 channels) ● HD L+R Presence (8 channels)
Analog FM Modulation Measurement
Modulation (Peak, Ave, Min):
Total, L, R, L+R, L−R ................................................................................. 0 to 125.0%, 0.1% resolution
Pilot ............................................................................................................... 0 to 15.0%, 0.1% resolution
Accuracy is better than 1%. Metering of Analog FM Stereo conforms to legacy FCC guidelines.
FFT RF Spectrum Analysis
Display Modes ....................................................................... Realtime, Peak Hold, Average, Infinite Hold
Amplitude
Number of Points ................................................................................................................................. 181
Scale .........................................................................................................
+100.0 to −150.0 dB adjustable
Resolution ........................................................................................................................................ 0.1 dB
Frequency
Number of Points ................................................................................................................................. 501
Resolution BW...................................................................................... 50, 100, 250, 500, 1000, 1500 Hz
Analog FM Composite Outputs
Analog format (2 buffered) ....................................
1.5 Vrms @ 100%, 75Ω unbalanced, BNC Connector
Digital format (2 buffered) ..................................................................................
LVDS, 100Ω, RJ-45 Jack
Analog FM Composite Output Performance (High-Level Input, LVDS Output)
Frequency Response .......................................................................................... ±0.01 dB, 10 Hz to 100 kHz
SNR ...................................................................................................................... 100 dB, 75 µs de-emphasis
Distortion ........................................................................................................... 0.001%, 75 µs de-emphasis
Analog FM Composite Output Stereo Capability (High-Level Input, LVDS Output)
Frequency Response (L and R) .............................................................................. ±0.1 dB, 10 Hz to 15 kHz
SNR (Stereo) ......................................................................................................... 90 dB, 75-µs de-emphasis
2
For >60 SNR at any of the Composite Outputs.