TEX150
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User Manual
Rev. 4.0 - 27/07/01
4. General Description
The TEX150 is an exciter working in the 87.5 to 108 MHz band, programmable in
steps of 10KHz. Its power output is continuously adjustable from 10W to 100W
into a 50 Ohm load and it’s contained in a 19” rack mountable 3HE case.
The power output control, audio input level control and analog meter for the
measurement of operating parameters, are all mounted on the front panel.
The line power, audio input, RF output and telemetry (optional) connectors are
mounted on the rear panel.
This device is present in two version: the mono (TEX150) and the stereo version
(TEX150/S).
The TEX150 incorporates a stereo coder which guarantees excellent stereo
separation together with low harmonic distortion (only for Stereo version). It also
accepts two SCA signals.
A front panel switch allows stereo operation (only for stereo version) or "mono/
mpx" operation which excludes the stereo encoder and uses the "right" input as
the mono input and the "left" input as the wideband composite input.
The specification features low audio distortion and intermodulation figures (typically
0.03%) and a high signal-to-noise ratio (typically -80 dB).
A voltage selector on the transformer primary allows a variety of supply voltages
to be used.
The operating parameters of the exciter can be monitored using the analog
multimeter situated on the front panel. The parameter to be measured is selected
by the rotary selector. The frequency control allows frequencies to be selected in
steps of 10KHz.
Three red alarm leds indicate VCO unlock , excess VSWR on the output and the
excess of temperature, and the shutdown condition, programmed by a remote
command. Three green leds indicate the presence of +12V, +15V and +28V voltages
which are used to power the various cards inside the exciter.
A selector allows selection between Mono/MPX and Stereo functions and another
selector is provided to choose the level of the input signal. Trimmers are provided
for adjustment of left and right channels and a switch allows the stereo subcarrier
to be enabled or disabled.
The operating frequency is governed by a thermally-compensated, reference
oscillator working within a phase-locked loop (PLL). The TEX150 reaches frequency
lock within a maximum of 30 seconds.
Summary of Contents for TEX150
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Page 51: ...TEX150 CSALMTEX100 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 55: ...TEX150 CSFIN150W03 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 59: ...TEX150 PSSW2812B 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 63: ...TEX150 CSAUDIOCTE 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 67: ...TEX150 CSSDC30A003 1 6 Technical Appendix Rev 1 0 27 07 01 ...
Page 73: ...TEX150 CSAFM MPX002 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 74: ...TEX150 2 4 CSAFM MPX002 Technical Appendix Rev 1 0 27 07 01 ...
Page 77: ...TEX150 CSSINTEX100 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 81: ...TEX150 CSTCXO02 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 85: ...TEX150 SLWSTDTEX100 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 89: ...TEX150 CSLPF3TEX100 1 4 Technical Appendix Rev 1 0 27 07 01 ...
Page 93: ...TEX150 CSVCODRVTX02 1 4 Technical Appendix Rev 1 1 24 12 02 ...
Page 97: ...TEX150 METER100 3 1 4 Technical Appendix Rev 1 1 09 10 01 ...
Page 101: ...TEX150 CSCONTRAVES 1 6 Technical Appendix Rev 1 0 27 07 01 ...
Page 104: ...TEX150 4 6 CSCONTRAVES Technical Appendix Rev 1 0 27 07 01 ...
Page 107: ...TEX150 CSP100 1 4 Technical Appendix Rev 1 0 27 07 01 ...