Specifications

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16-bit DSP.2.
Full function programmability including: frequency, BFO, bandwidth, sweep, AGC, squelch, volume,
demodulation, and calibration.
3.
Selectable digital l/Q output (16 bits).4.
Standard AM, FM, CW, USB, LSB, and ISB modes.5.
Seventy-four standard bandwidths selectable from 0.1 to 300 kHz, plus five user-defined downloadable
filters.
6.
Spurious-free homodyne and MFD synthesizer circuit architectures.7.
Dual DSP filtering, demodulation, and processing with programmable demodulation selection and output
combining.
8.
Open architecture system: nonproprietary interface specifications are provided, allowing third party
customization to any application.
9.
Packaged in a single rack unit chassis (1.72 inches high, 19 inches wide).10.
RS-232/422/485 serial control.11.
Applications
The 95S-1A receiver is an excellent choice for any application requiring computer-controlled tuning of
narrow-band radio signals. Several applications include:
Standard communications modes in the HF, VHF, and UHF bands (ie, AM, FM, CW, SSB) for civil,
government, and military networks. Test equipment. Spectrum monitoring systems.
The Rockwell Collins 95S-1A general purpose receiver provides high performance at low cost and supports a
wide variety of radio receiving applications. The 0.005 to 2000 MHz receiver is designed to satisfy user needs
for applications ranging across commercial, government, and military communications, spectrum surveillance
and test systems. It is suitable for fixed station, shipboard, or transportable environments.
The receiver serial command protocol is simple and yet minimizes the amount of data that must be transferred
between the receiver and the controller. The protocol supports single command operations or can be operated in
a multiple command mode that allows a sequence of commands to be executed in succession.
Rockwell Collins has planned the 95S-1A receiver to be an open architecture system, meaning that
nonproprietary interface specifications are provided to users, allowing third party customization. Specifically, the
memory in the receiver may be altered to download user-written DSP software and alternate control languages.
The core Rockwell Collins DSP routines are non-alterable, but may be utilized or supplemented.
Frequency range ............. 0.005 to 2000 MHz
Frequency resolution ........ 1 Hz
Tuning time ................. 13 ms (typical), with AGC disabled
Frequency setability ........ +0.1 PPM, using electronic adjustment
of the internal standard
Frequency accuracy .......... +1 PPM, 0 to 50 øC
Synthesizer noise ........... Characterized in the following table:
Frequency Noise Power Noise Power
Separation @fo=100 MHz @fo=1000 MHz
10 Hz -55 dBc/Hz -40 dBc/Hz
100 Hz -90 dBc/Hz -75 dBc/Hz
1 kHz -105 dBc/Hz -94 dBc/Hz
10 kHz -110 dBc/Hz -94 dBc/Hz
100 kHz -135 dBc/Hz -120 dBc/Hz
>1 MHz -145 dBc/Hz -140 dBc/Hz
Noise figure
0 to 30 MHz antenna ....... 14 dB (typical)
20 to 2000 MHz antenna .... 12 dB (typical)
External standard in ........ 1, 5, and 10 MHz
External standard level ..... 0 dBm (typical)
BFO ......................... 1-Hz step, range of +/-4 kHz
Serial control
Interface ................. RS-232/RS-422/RS-485
Data rate ................. 75 to 38,400 bits per second
Format .................... 8 data bits or 7 data bits with 1 parity bit
Internal preselector ........ 20 to 2000 MHz (Dual conversion used for
frequencies below 20 MHz)