Ambient Weather RC-1200WBDN 사용자 설명서 - 페이지 6

{카테고리_이름} Ambient Weather RC-1200WBDN에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Ambient Weather RC-1200WBDN 8 페이지. Radio controlled analog wall clock

11 Maintenance

The device is maintenance-free, but should be cleaned occasionally. Only use a slightly dampened and

soft cloth to clean the housing. Do not use abrasives or solvents.

Operating Voltage

Battery

Battery Life

Radio controlled time protocol

Dimensions

Term

DST

RCC

WWVB

If your question is not answered here, you can contact us as follows:

1. Email Support:

2. Technical Support: 480-346-3380 (M-F 8am to 3pm Arizona Time)

Version 1.1

1.5 Vdc

1 x AA

About 1 year (high quality batteries)

WWVB (USA)

Approximately 12"

Definition

Daylight saving time (DST) or summer time is the

practice of advancing clocks during the lighter months so

that evenings have more daylight and mornings have

less. Typically clocks are adjusted forward one hour near

the start of spring and are adjusted backward in the

autumn.

A radio-controlled clock is a clock that is synchronized

by a time code bit stream transmitted by a radio

transmitter connected to a time standard such as an

atomic clock.

WWVB is a NIST time signal radio station near Fort

Collins, Colorado. WWVB is the station that

radio-controlled clocks in most of North America use to

synchronize themselves. The 70 kW ERP signal

transmitted from WWVB is a continuous 60 kHz carrier

wave, the frequency of which is derived from a set of

atomic clocks located at the transmitter site, yielding a

frequency uncertainty of less than 1 part in one trillion.

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