System Components section of the RX: from HP
System Components section of the RX:
1. Signals are captured / received by the antenna is routed to a terminal Antenna Switch
2. Antenna Switch will issue two signals R for Mobile Dual Band, the DCS-RX (1800MHz) and GSM-RX (900MHz). The second signal is transmitted as a signal filter to RX, RX signals are filtered and forwarded to the Transistor as an amplifier. On the second transistor amplified RX signals to be transmitted to the filter to re-filtered and split the signal into 4 parts, namely the issue of two signals and two DCS-RX-RX GSM signals are forwarded to the RF IC.
3. IC RF / IF Signal Processing RX and adjusted to the frequency established by the VCO.
Signal transmitting section (TX)
In this section, work on phones that work consists of several components, these components include:
1. Antenna
2. Antenna Switch
3. TX filter (Filter)
4. IC PA
5. RF ICs
6. VCO
7. IC Power Supply
To determine whether or not the work of TX (transmitting), can be used lamp radiation, multitester, and make calls to numbers SOS / Emergency (to 112) without a simcard inserted.
How to do the checking with multitester are:
1. Turn on the phone with or without the use of Sim Card
2. Perform outgoing calls
3. Paste multitester near the antenna (calibration Multitester on 10V AC)
4. If the needle moves multitester, meaning TX work.
to be continue
1. Signals are captured / received by the antenna is routed to a terminal Antenna Switch
2. Antenna Switch will issue two signals R for Mobile Dual Band, the DCS-RX (1800MHz) and GSM-RX (900MHz). The second signal is transmitted as a signal filter to RX, RX signals are filtered and forwarded to the Transistor as an amplifier. On the second transistor amplified RX signals to be transmitted to the filter to re-filtered and split the signal into 4 parts, namely the issue of two signals and two DCS-RX-RX GSM signals are forwarded to the RF IC.
3. IC RF / IF Signal Processing RX and adjusted to the frequency established by the VCO.
Signal transmitting section (TX)
In this section, work on phones that work consists of several components, these components include:
1. Antenna
2. Antenna Switch
3. TX filter (Filter)
4. IC PA
5. RF ICs
6. VCO
7. IC Power Supply
To determine whether or not the work of TX (transmitting), can be used lamp radiation, multitester, and make calls to numbers SOS / Emergency (to 112) without a simcard inserted.
How to do the checking with multitester are:
1. Turn on the phone with or without the use of Sim Card
2. Perform outgoing calls
3. Paste multitester near the antenna (calibration Multitester on 10V AC)
4. If the needle moves multitester, meaning TX work.
to be continue
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