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Physical Condition:
Good
Working Condition:
Power-On Test Only Performed
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Acterna HSM1000 Stealth RF Modem
Product Description
Used, good condition, Acterna model HSM1000 Stealth Modem.
Manufacturer DescriptionThe HSM1000 Stealth Modem is used in combination with the PathTrak Headend Control Unit (HCU) or the Phasor DSP565 to transport data from the PathTrak to the Stealth SDA-5000 / 4040D field meters.
The HSM1000 is a required component of the Field View feature, which allows the network technician to observe real-time headend spectrum graphs at field locations using the SDA.
Data is transmitted to the SDA-5000 /4040D via an FSK modulated (100 kHz) telemetry carrier. The telemetry can be inserted in any unoccupied bandwidth on the forward path up to 1000 MHz, with an adjustable output level from +2- to +50 dBmV. All telemetry parameters are programmable via PathTrak or Phasor software.
The HSM1000 connection with the PathTrak HCU or Phasor DSP565 is accompished via standard RS232 communication, and a rear panel RF output port allows for easy coupling to the cable systems forward path. The universal power supply adapts to all international standards with an input voltage range of 85-264 VAC / 47-440 Hz.
Acterna HSM1000 Stealth Modem Technical Specifications
Transmitter
Frequency Range: 5 to 1000 MHz
Frequency Accuracy: @25°C; ±10ppm
Drift Range Over Temp: ±10ppm; ±3ppm/year aging
Tuning Resolution: 10kHz
Level Range: +20 to +50 dBmV
Level Resolution: 2 dB
Level Accuracy: ±3dB
In-Band Spectral Purity
Harmonics: -30 dBc
Spurious: -35 dBc
Telemetry: Forward telemetry user defined, 5-1000 MHz
Modulation: FSK, 100 kHz deviation
Spectrum Required: 1 MHz recommended
Spectral Occupancy: -15 dBc at 500 kHz offset; -34 dBc at 1 MHz offset; -55 dBc at 2 MHz offset
(with respect to non-modulated telemetry RF carrier nominal level, measured in 300 kHz RBW with 100 kHz VBW)
Telemetry Capability
Speed with Multiple User: 0.5 / unique display typical
HCU Data Interface: Serial, RS232 compatible, up to 57.6 kbps
Aux. Data Interface: Serial, RS232 compatible, up to 57.6 kbps
Physical / Operational
Dimensions: 16.73" x 1.73" x 10" (standard 1 U rack mount)
Weight: 7.5 lbs.
Operating Temperature Range: 0 to 50°C, 32 to 122°F
Operating Relative Humidity: 20% to 80% RH
Power Requirements
Frequency / Power: 47 to 440Hz / ~10 Watts
Input Voltage: 85 to 264 VAC
Input Current: 1.2A @ 100 VAC; 0.5A @ 265 VAC
Fuse: 1.25A, 250V 5x20mm SLO-BLO (2 required)
Input Connector: Integral Combination IEC connector and fuse holder
PathTrak RF modem interface: RS-232 compatible
RF Modem / Stealth protocal: Proprietary RF FSK modem
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