SCAN
In order to hear the conversation of the all -channel , and a kind of way of listening to to adopt. Through pressing the special-purpose key , the channel is received for some time one by one to enable receiving the circuit in certain order, signal in the channel in order to listen to. If each channel receives time as 100ms, can scan ten channels per second, namely scan the speed as 10ch/s. Have priority in the channel and scan the function (Priority Channel Scan ) and have priority to scan the preferential channels established in the course of scanning. While deleting / adding and scanning the channel (Delete/Add Scan Channel ) and tabulating some one -channel from deleting or adding scanning while scanning and tabulating to.
VOX
TOT: Time Out Timer
Function this is it restrain from user ultra time launch on one -channel , prevent the interphone from being caused by that launch for a long time and damaging at the same time to use for.

Battery Save
In order to economize on the electricity, lengthen the time of awaiting the opportune moment, the interphone has not launched accepting to operate with the button within some time, will work in shut-down , way to start the machine in some time in period, this way calls the province an electric way. The on-off length is than probably 1:4. When receiving the signal or having buttons to operate, the interphone withdraws from the electric state of province immediately , enter the normal condition.
High/Low power
This function can let users choose the high power or low power according to the actual conditions .
Busy Channel Lockout
When using this function, users forbid transmitting the signal on the busy channel .

Squelch Level
Noise power and power of the signal present corresponding relation in the signal of receiving, the stronger the signal is, the weaker the noise is. Great noise and minimum noise divide into several shelves most, every one is called one grade. Shelf that divide into is it shout quiet to make an uproar progression to count. Users can choose according to the actual conditions .
CTCSS/CDCSS
Use this function to avoid receiving the irrelevant call.
2-TONE/DTMF
Utilize 2 - TONE or DTMF letter make it call out the corresponding interphone not to choose.

Reverse Frequency
While using the function frequently upside down, transmission frequency and frequency of receiving of the interphone will be exchanged, and letter established is it exchange to make.

Talk Around
While using and taking off the function of the network, the transmission frequency of the interphone becomes and receives frequency the samly; Launch letter is it change into and receive the letter not to make the samly too to make.

Auto-Transpond
When the interphone receives a correct code to call out , send a signal out by responding calling out to call out.
Emergency Alarm
Push warning special-purpose key, with loud sound is it report to the police or is it is it report to the police yard give others person who hold or base platform to schedule to send out to give out most interphone.
Patrol Record
Go on patrol personnel is it go on patrol when ordering to reach , interphone is it go on patrol inquiry signal that send out of registering etc. to receive, then start and register and operate automatically , register such information as one's own identity yard ,etc. for the registering device , showed some and went on patrolling , the person has already reached this place.
Keylock
Use this function to prevent the mistake operation of the key.

Battery Indicator
Show the electric consumption of the battery.

Backlight
Used for operating under the night or the dim situation, can see LCD showing and button clearly .

Cloning
This function allows to duplicate the data of an interphone in other interphones with the same type

Modulation
By modulating the change of the parameter of controlling the signal carrier of some one or some several kinds of parameters of the signal, according to the difference of control parameters, modulating can be divided into amplitude modulation , frequency modulation and adjusted the looks.

Audio
Audio,Refer to the voice frequency that people speak, usually point the frequency band of 300Hz-3400Hz.

Signal carrier
Speech , digital signal , letter person who make useful carrier of signal, easy high-frequency electromagnetic wave that transmit. Modulate it with the change of the parameter of controlling the signal carrier of some one or some several kinds of parameters of modulating the signal, according to the difference of control parameters, modulating can be divided into amplitude modulation , frequency modulation and adjusted the looks.

The channel and interval of channel
The Dow Jones index of the letter launches the frequency value taken up while receiving . The frequency difference during the adjoint channel is called the interval of channel . The interval of channel stipulated is 25KHz (broadband ) , 20KHz , 12. 5KHz (narrowband ) ,etc..
2-TONE
2-TONE, Two message orders, made up by two audio frequency signals, A Tone + B Tone. Send A Tone period first , in then interval period, and then send B Tone. Utilize 2 - TONE letter can choose to call out the corresponding interphone to make.

5-TONE
5-TONE, 5 message order, function and two message make the same, difference lie in made up of five kinds of frequency.
CTCSS
CTCSS (Continuous Tone Controlled Squelch System) , The continuous pronunciation controls the quiet system of making an uproar , it is a kind of frequency lower than the frequency of the audio frequency to commonly called as the inferior audio frequency (67Hz-250. 3Hz) add the technology transmitted together in the signal of the audio frequency. Because its frequency range under the standard audio frequency, so called the inferior audio frequency. After the interphone carries on intermediate frequency demodulation to the signal of receiving , the signal of the inferior audio frequency, through straining waves, having a facelift, input get CPU, with is it compare to go on by copies of CTCSS frequency that machine establish, is it open quiet sound to determine.
CDCSS
CDCSS（Continuous Digital Controlled Squelch System），In succession digital control to make an uproar system while being quiet, function its the same as CTCSS, difference lie in it to come as quiet terms that transliteration turn on by way of digital coding.
DTMF
DTMF（Dual Tone Multi Frequency），Pair of sound is much frequently , made up by the high frequency group and low frequency group, the high low frequency group each includes 4 pieces of frequency. A high-frequency signal and a low frequency signal superpose and make up an association signal, represent a figure. DTMF letter has 16 codes to make. It can choose to call out the corresponding interphone to make to utilize DTMF letter.
　

Rudimentary knowledge

Which fields is the interphone applied to mainly？
　　 The interphone is applied to such trades as public security men , civil aviation , transportation , water conservancy , railway , making , architecture , service ,etc. mainly, contact and conductor dispatcher among member of community, by raising the efficiency of linking up and raising the fast reaction ability of punishing accident. As the interphone enters the civil market, people go out to travel , do shopping and begin to use the interphone more and more too.

Which main functions does the interphone has？
　　 Please consult " the function and terminological interpretation ". Today, the cell-phone is popularized very much, why will people still choose to use the interphone? This is the place where because compared with cell-phone the interphone has unique a lot of: 1, The telling machine is not limited by the network , in the place where the network has not been covered , the interphone can let the user communicate easily ; 2, The saying machine offers it one to one, a pair of a lot of conversation ways, say once pressing, operate simple, is it communicate free to make,, especially urgent dispatcher cooperate situation of work collectively, these characteristics are very important; 3, It is with low costs to converse.

How far is the distance of conversation of the interphone？
　　 The distance of conversation of the routine interphone is generally 3 kilometers, but in a situation that tall and big buildings or the high mountain stop , conversing before standing opposite each other short when the network more supportsing a bit, the conversation range of the interphone can be up to dozens of kilometers.

Consumers can buy the interphone？
　　 Consumers to can buy interphone too, buy and use interphone not to must apply to local radio board of trustee ( abbreviated as and " had no committee " ) before, get the license of radio station and pay the occupancy of frequency. From December 6 , 2001, our country opens the civil interphone market, use 400MHz, it is smaller than 0 to launch the power. 5 watts of civil interphones, does not need to go through the any formalities.

Whether the interphone can be phoned？
　　 On terms that the network supports, the interphone can be used for phoning. But if but the routine between the units converses, can't realize the function that is phoned .

Conversing will pay with the interphone？
　　 Carried on and needn't be paid to converse with the routine interphone. No matter how use frequently you, annual you is it pay the frequency occupancy of dozens of yuan for every interphone to take only, such as using the public interphone not to need to pay any expenses .

What is a public interphone？
The public interphone refers to: It is not greater than 0 to launch the power. 5W, works in the wireless interphone of appointed frequency, it must accord with the following demands that its radio launches such technical indicators of the radio frequency as frequency , power ,etc.:
　 1、work Frep（.9000 ; 409.单位：MHz）: 409.7500、 409.7625、 409.7750、409.7875、
　 409.8000、 409.8125、 409.8250、 409.8375、 409.8500、 409.8625、 409.8750、
409.8875、4099125、 409.9250、 409.9375、 409.9500、 409.9625、 409.9750、409.9875；
2, Modulate the way: F3E;
3, Launch the power (EIRP ) effectively: < 0. 5W;
4, Launch the frequency tolerance: <+5ppm;
5, Stray radiation of the transmitter: <50uW
6, receiver stray radiation: <20nW;
7, Interval of channel : 12. 50kHz.

Use limited why the interphone have frequency？
In order to guarantee most users converse and utilize frequency resources without interruption and rationally , the national wireless use for frequency of board of trustee of Taiwan has been divided , stipulate different trades use the corresponding frequency range. Users should apply a bit more frequently to the local board of trustee of radio when buy the interphone.
　

Use general knowledge The aerial uses the precautions
1, Can only use first wife of our company or the aerial approved . Do not undergo the aerial approved, may damage the interphone or infringe the provisions of radio administration of Ministry of Information Industry through the aerial refitting or adding the enclosure .
2, While using , don't take the aerial with hands .
3, The interphone aerial can't be backed out, otherwise apt to be in charge of the power while launching to burn out.
4, Don't use the aerial damaged . While launching, if the aerial damaged contacts the skin, may cause and invite slight burning .
The battery uses the precautions
1, Use first wife of our company or the battery approved.
2, If the metal conductor is practised touching uncovering electrodes of the battery such as the jewellery , key or pearl , all batteries may cause destroying or bodily injury . Please is it substitute the bad for the good battery of cable already to treat carefully, especially when pack it into the pocket , leather wallet or othering has metal containersing, need to pay special attention to.
3, Charging should go on in 50 degrees of environments . Exceed this life-span of temperature range batterying influences , can not be full of specified capacity at the same time .

Electromagnetic interference / electromagnetic compatibility
For prevent electromagnetic interfere and/or electromagnetic compatible question that cause from , is it " shut off the interphone " the occasion of the identification should shut off the interphone " to post. For example the hospital or other occasions of using the medical equipment of health care. Should as requested shut off the interphone too while taking the plane.

The interphone operates the precautions
1, When the interphone is being launched , keep the interphone being in the vertical position , keep 2 microphone and mouth. 5-5 centimetres of distances. When launching, interphone amount to 2 at least from the head or health. 5 centimetres. Hold interphone carry at body , when launching , aerial amount to 2 at least from the human body. 5 centimetres.
2, Make movements of the organ machine many times to use , adjust volume to the volume which suits your sense of hearing at the same time .

The interphone uses safe precautions
1, On the automobile with safe gasbag , don't put the interphone in the range that may be involved when the gasbag is launched . If the regional range that the interphone may be involved when the gasbag is launched , once the gasbag is launched rapidly, the interphone may hurt the personnel in the car with great shock power .
2, Under the atmospheric environment or occasion of the potential explosion, unless the interphone passes special authentication , otherwise must shut off the interphone . Going under explosion atmospheric environment, the electric spark will cause and explode fire .
3, Don't change the battery or charge the battery under the atmospheric environment of the potential explosion . May cause and contact the electric spark and result in exploding while installing and dismantling the battery.
4, Here before regional close to the blast area and detonator, must shut off the interphone first , so as not to cause the possible explosion.

The routine of the interphone is maintained
1, After the interphone longs run , very easy to become dirty according to strong in, controlling the knob and chassis, please take down and control the knob from interphone , and clean the chassis with neutral lotion (don't use the chemical drug of strong corrosivity ) and wet cloth. Use such as except dirty pharmaceutical , alcohol , spray pharmaceutical or petroleum preparation ,etc. chemical medicines might cause interphone surface and damage of the outer cover .
2, Handle the interphone with care , the aerial moves the interphone to make sure not to be portable.
3, At the suitable enclosure , please cover dustproof to stamp (if equip).

　

The trouble answering

Can't talk with other group members in the group？
Confirm at first whether the frequency that you use and inferior audio frequency signal are the same as other members in the group; Please confirm whether other members in the group are in serving the district if there is no question.

Other group members' voice appears in the channel？
Please change the signal sound of the inferior audio frequency, the signal sound of all interphones in must reorganize even more at the same time , or apply to alter it a bit more frequently .

How long can not the battery be used after being charged correctly？
The life-span of the battery has already arrived, please upgrade the battery.

How to deal with after the machine enters water？
Machine enter after the water should pull out battery immediatelying, is it is it ventilate hard water dry office dry up to put to throw out, try to send to the maintenance of maintenance station within shortest time.

How to repair the water entering machine？
First machine it disassemble,it disassemble one by one outside parts (such as button, PTT glue, lead post not all,etc. of), wash water of the board to wash the circuit board clean and drying carefully special-purposly or with the absolute alcohol , clean out the spot on the circuit board with the tiny tool; Then soak with the absolute alcohol , there are conditions that can be washed with the washing machine of ultrasonic wave; Dry up with hairdryer after pull out secondly(pay attention to temperature can't too high), watch circuit board injured, if break and bind with the detailed enameled wire , measure the power straight negative pole end hindering value of the board with the form by three, can't short out or the broken circuit (are set up an electric circuit , looked over the electric current , normal for about 40MA , not lower than 1000MA while launching ); Finally , check whether the wireless mouth is dirty , if clear up dirtily in the lump, if other troubles are and then overhauled according to the routine at the same time.
Corrode entering water machine to be generally unable to repair serious to circuit, so machine enter after the water should go on in time handling.

Can't start the machine : Change the battery

Can't send :
1. Confirm and launch key PTT while sending and is totally pushed and the red light is bright.
2. Confirm there is enough electric consumption in the battery.

Hear other conversations or noises in the channel:
Try out other channel is it is it dispel CTCSS to be quiet to make an uproar yard to interfere to use.

The distance of conversation is too short:
1. Change the battery.
2. There may barriers that are separated .

Can't accept the words :
1. Confirm and launch key PTT that is not pushed .
2. Change the battery.
3. There may barriers that are separated .

It is too great to interfere:
Whether use other channel or is it is it dispel quiet sound yard unable to alter channel or quiet to make an uproar yard CTCSS to interfere to use. Look over ' ' icon on? Can be according to needing to alter after dispelling. Power shortage of the battery: Check with the method of replacing whether the battery and charger are good? The indicator lamp of the charger does not glimmer bright or double : Check whether the battery is put correctly? Contact with the charger well?