GAI-Tronics IDR1000A, Руководство пользователя и инструкция по установке

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Installation IDR1000A DC Remote Desk Set Use and Installation Manual
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Facility Interface Code
FIC Description
02DC2 Two-wire dc at end-user premises; 600-ohm impedance (No option code)
Metallic Two-wire metallic private line (commonly known as ‘hoot and holler’ circuits)
Within a plant, campus, or building, customer-supplied metallic pairs may be used.
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DC continuity is required on the lines between the dc desk sets and the remote base station
equipment.
Circuit Conditioning
The desk set is designed to work with good quality analog speech band or leased private circuit. This
was previously known as “basic” conditioning under Series 2000/3002 service. The line must be
non-PSTN (no dial tone, talk-battery, or signaling). This equipment falls under the Category II, FCC
Tariff #260 Service and is exempt from FCC Part 68 registration. (Ref. FCC Form 730 Application
Guide pages 1-5.)
For two-wire operation, 2000 Series lines may be used with or without conditioning. C1 or C2
conditioning is available for these lines and relates to the envelope delay distortion and attenuation. A
basic conditioned line may be used if it is the only type available. Overall system quality is limited by
the quality of these lines.
Settings and Adjustments
The desk set housing must be open with the circuit board exposed. These procedures assume that the
base station has been properly adjusted.
DANGER
Voltages hazardous to life may be present at the exposed control line terminals under certain
conditions during the following procedures. These voltages are also present on some component
leads. Care should be taken to avoid shock during testing.
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In the following tests, a 2- μ F, 250-volt blocking capacitor should be used to protect any test
equipment that could be damaged by dc voltages.