Timewave DSP-599zx, Operating Manual

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2 – Installation
2-2 March 6, 1997
Power Supply
The DSP-599zx requires a power source of 12 to 16 Volts dc at 1.0 Am-
pere. The center pin of the power connector is POSITIVE (+). The DSP-
599zx chassis is negative. The correct power plug size is 5.5 mm o.d. and
2.1 mm i.d.
Acceptable power sources include:
• A 12 volt dc 1 amp unregulated wall mount or desktop power supply.
• A separate regulated 13.8 volt dc power supply with a minimum of 1.0
amp output.
• 13.8 volt dc transceiver power supply Note that some transceivers
with internal power supplies have accessory power jacks with insuf-
ficient current output to drive the DSP-599zx. Do not use these in-
ternal supplies!
Users of some Kenwood and Ten-Tec rigs experience ground loop problems
when using a common power supply for their rig and the DSP-599zx. We
recommend that a separate power supply be used for the DSP-599zx.
(Switching power supplies are generally noisy and not recommended, un-
less they are specifically designed to drive amateur radio equipment.)
Connecting Cables
Use shielded coaxial cables with RCA phono connectors to minimize the
possibility of RF interference to the DSP-599zx. Timewave recommends
coaxial video cables with metal adapters to match the connectors on trans-
ceivers and speakers.
Do not connect the center pin on the DSP-599zx audio input
connector to the transceiver speaker ground. Check the connec-
tions carefully - this is one of the most common problems in
DSP-599zx installations!
Wiring information
This information is to help you determine which connectors you need for
your receiver or transceiver. Connector requirements vary widely. Check
your radio owner’s manual for exact details.
DSP-599zx Inputs and Outputs
The DSP-599zx uses four RCA phono jacks on the back of the filter for au-
dio input, audio output, PTT switch, and line output. Use cables with RCA
- Neg
+ Pos
599-096