Timewave DSP-599zx, Руководство по эксплуатации

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DSP-599zx Audio Noise Reduction Filter
March 6, 1997 2-5
Reassemble the DSP-599zx by reversing the previous steps. Take care when
sliding the circuit board assembly in so that you don’t pinch the attached rib-
bon cables.
Audio Input Signal Level Setup
The audio inputs of the DSP-599zx are RCA phono connectors on the rear
panel of the DSP-599zx. Matching the output level of the radio to the input
level of the DSP-599zx is necessary to take maximum advantage of the wide
dynamic range of the DSP-599zx. The Setup mode of the DSP-599zx allows
independent adjustment of input sensitivity of Channels
A
and
B
. Turn to
page 2-11 for the Setup procedure. The input sensitivity is factory set to
match the speaker output levels typical of most amateur transceivers. Use
Setup to set the input sensitivity if the source is different from a loudspeaker
output. If you are using a loudspeaker output, the best way to match the level
is to use the adjustable audio output of the radio to set the input level to the
DSP-599zx. After connecting the DSP-599zx to the radio, follow this simple
procedure to match the audio levels.
First, tune the radio to a strong signal after setting the radio output gain con-
trol to a convenient midrange position. Adjust the output level control on the
radio so the Overload (red) indicator LED on the front panel of the DSP-
599zx occasionally flashes and the Normal (yellow) indicator LED always
flashes with the normal audio input levels. Proper adjustment ensures opti-
mum signal-to-noise ratio and minimum distortion. Adjust the radio output
level only to maintain the proper input level to the DSP-599zx. Use only the
[Gain] control on the DSP-599zx to control the listening volume.
Audio Output
The DSP-599zx provides you with a choice of three audio outputs:
• Headphone jack
• Speaker outputs
• Line outputs
Headphone Jack
On the lower right hand corner of the DSP-599zx rear panel is a 1/4” (6.3
mm) jack connected for stereo headphones. Timewave recommends stereo
headphones. Mono headphones will work for many of the functions of the
DSP-599zx; however, some of the advanced capabilities require stereo
headphones or two speakers.
Inserting a headphone plug does not affect the DSP-599zx speaker output.
Use the front panel speaker switch to mute the speaker. The headphone vol-
ume may vary substantially among different types. If you find that the head-
phone volume is different than the speaker volume, use the internal jumpers
to adjust the headphone volume.