Extech CTH10 Manual

Extech Måling CTH10

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Side 1/1

User's Guide

Model CTH10

RADIO CONTROLLED CLOCK

with TEMPERATURE & HUMIDITY

GETTING STARTED

1. Remove the battery door by releasing the battery cover latch.

2. Insert four new AA size batteries as per indication marked on the battery

compartment.

3. Once the batteries are inserted, all the segments of the LCD will show

briefly before entering the radio controlled time reception mode.

4. The RC Clock will automatically start scanning for the radio controlled

time signal after 10 seconds.

5. The default time zone is Pacific zone. If you are in this time zone,

changing is not required. Otherwise, change to the correct time zone (Refer

to ‘Select the Time Zone’.)

Note

: If there is no display on the LCD after inserting the battery, replace with four

new batteries or press RESET key by using a metal wire. In some cases,

you may not receive a signal immediately. Due to atmospheric

disturbances, the best reception often occurs during night time.

FUNCTION KEYS

1. RESET: In case of mal-

function after insert

of battery, use a pin to

press the RESET key

to restart the clock.

2. MODE: Switch between Normal

Time Mode and Alarm

Time Mode.

3. SET: In editing mode, step the setting items.

4. ADJUST: In normal time mode, toggle between Date & Month and Year

display. In normal time setting mode, change the setting value. In

Alarm time mode, switch ALARM/SNOOZE function ON/OFF.

5. °C/°F: Press it on ce to toggle between °C and °F format. Press

and hold it for 3 seconds to receive the signal for reception

testing.

6. YEAR: In normal time mode, toggle between Date & Month and year display.

7. SNOOZE: Stop the current RC reception or stop the alarm sound during its

activation.

DISPLAYS SYMBOLS

Normal Time Mode

1. Time

2. Month

3. Date

4. Day of the week

5. Temperature

6. Humidity

7. Signal Strength Indicator

8. Daylight Savings Time (DST)

9. Time zone map

SELECT THE TIME ZONE

Make sure the time zone is set to appropriate location. The default time zone is

Pacific zone. If your location is not the Pacific zone, do the following:

1. In the normal time mode, press the MODE key to enter the alarm time mode.

2. Press the SET key to select the proper time zone. P=Pacific, M=Mountain,

C=Central, E=Eastern

DAYLIGHT SAVINGS TIME (DST)

The clock has been programmed to automatically switch when daylight savings

time is in effect. Your clock will show ‘DST’ during the summer.

SIGNAL STRENGTH INDICATOR

The signal indicator displays signal strength in 3 levels. Wave segment flashing

means time signals are being received. The signal quality could be classified into

three types:

Poor Acceptable Excellent

If the RC clock receives signal successfully, a Sync-time symbol appears on LCD.

The unit has already received the time signal. Otherwise, the signal strength

symbol will disappear from the LCD display.

Note:

1. You may use the RECEIVE button to receive the time signal manually. Be

caution of using the RECEIVE mode. The receive mode will be off

automatically after 6-12 minutes. Receive mode consumes more battery

power and reduces battery life.

2. In an environment with radio frequency interference, the unit may not maintain

the communication link and will resume to normal when interference stops.

3. Pressing SNOOZE key for 8 seconds can stop the current RC reception.

MANUALLY SETTING THE TIME AND DATE

If the clock does not receive the time signal successfully, you can set the time

manually. As soon as the transmitter is received again, the clock will

automatically synchronize with the received time.

1. Press and hold “SET” key for 2 seconds until HOUR digit flashes.

2. Press “ADJUST” key to increase the value of the flashing digit.

3. Press “SET” key again to step the setting items.

The sequence is: Hour > Minute > Second >12/24 HR > Month > Date > Year >

Day Language

4. Press the ADJ key to select the day language: GB=English, FR=French,

DE=German, ES=Spanish, IT=Italian

5 Press “MODE” key to exit the setting mode.

Alarm Time Mode

1. Alarm time

2. Alarm mode

3. Snooze icon

4. Alarm icon

SETTING THE ALARM

1. In the Normal Time Display, press “MODE” key to enter the Alarm Time

Mode.

2. Hold “SET” key for 2 seconds until HOUR digit flashes.

3. Press “ADJUST” key to increase the alarm hour value.

4. Repeat the above operation to set the alarm minute.

5. Press “MODE” key to exit the setting mode.

USING THE ALARM AND SNOOZE FUNCTION

1. Set the Alarm time as described in the previous section.

2. Activate the Alarm by pressing the “ADJUST” key so that the bell icon “

“

appears.

3. Activate the Snooze by pressing the “ADJUST” key so that the snooze icon

“Zz” appears.

4. To de-activate the alarm and snooze function, press the “ADJUST” key

until both icons disappear.

Note:

When the snooze function is activated, the alarm will automatically start again

after 4 minutes, total 4 times. It won’t sound again until the next day.The

alarm duration is 60 seconds.

BATTERY REPLACEMENT

When the LCD becomes dim, replace with four new AA size batteries at once.

Pay attention to the battery polarity.

Note: Attention! Please dispose of used unit and batteries in an

ecologically safe manner.

IMPORTANT

For best reception, please read the following instructions:

1. This sophisticated instrument will automatically receive the time signal

transmits from the American Atomic Clock transmitter.

2. It is strongly recommended to start this clock at night and allow the clock to

receive the signal automatically overnight.

3. Always place the unit away from interfering sources such as TV set,

computer, etc.

4. Avoid placing the unit on or next to metal surfaces.

5. Closed area such as airport, basement, tower block, or factory is not

recommended.

6. Do not start reception while moving in a vehicle or train.

SPECIFICATIONS

Measurement Range Accuracy

23°F to 32°F (-5°C to 0°C) ±3°F (±1.5°C)

33°F to 86°F (1°C to 30°C) ±2°F (±1°C)

Temperature

87°F to 122°F (31°C to 50°C) ±3°F (±1.5°C)

20% to 40% RH ±8% RH (@25°C)

41% to 70% RH ±6% RH (@25°C)

Humidity

71% to 90% RH ±8% RH (@25°C)

Storage Temperature: -4°F to 140°F (-20°C to 60°C)

Dimensions: 11.4x17x11.8” (29x43x30cm)

Weight: 2.75lb (1.25kg)

WARRANTY

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts

and workmanship for one year from date of shipment (a six month limited warranty applies to

sensors and cables). If it should become necessary to return the instrument for service during or

beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext.

210 for authorization or visit our website www.extech.com

for contact information. A Return

Authorization (RA) number must be issued before any product is returned to Extech. The sender

is responsible for shipping charges, freight, insurance and proper packaging to prevent damage

in transit. This warranty does not apply to defects resulting from action of the user such as

misuse, improper wiring, operation outside of specification, improper maintenance or repair, or

unauthorized modification. Extech specifically disclaims any implied warranties or merchantability

or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or

consequential damages. Extech's total liability is limited to repair or replacement of the product.

The warranty set forth above is inclusive and no other warranty, whether written or oral, is

expressed or implied.

CTH10 V1.0 3/07

Produkt Specifikationer

Mærke:	Extech
Kategori:	Måling
Model:	CTH10

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