31MN024-010
• Automatic Level Control (ALC): the RF signal level is adjusted according to blocking
requirements
• RF-to-optical conversion of the signal, which is fi nally conveyed to the output optical port
Different Types of Remote Units
In order to allow radio coverage with different power and band requirements, the ION-B
architecture provides a wide variety of Remote Units. This allows the customer to choose the
solution which best fi ts its coverage and environmental demands.
Depending on the bands where the radio coverage has to be provided and on the signal
power required to cover the environment, your Remote Unit will fall into one of the topologies
shown in fi gure 3.1.1.
The following 4 sections of the manual refer to these 4 Remote Unit topologies. Please follow
the instructions described in the section corresponding to the case (A, B, R, R2, F) of your
particular Remote Unit.
The case of your Remote Unit can be easily identifi ed in Figure 3.1: or, as an alternative, you
could contact your Sales representative or check it on the offi cial ION-B Brochure (see fi g.
3.1.2),.
As in fi g. 3.1.2, the “TFAM 91/18/20” Remote Unit proves to be described in the Andrew bulletin
PA-100508-EN. Look through the Remote Unit’s dedicated bulletin in order to get all of the
technical specifi cations concerning the unit itself.
Remote UnitS
Power Class*, dBm Case Product Code Bulletin Code
GSM900 EGSM900 GSM1800 UMTS2100 LMR800 Cellular850 LMR900 AWS1700 PCS1900 PCS1900 Ext.
27 - - 27 - - - - - - B TFAM 90/20 PA-100582-EN
- 27 - 27 - - - - - - B TFAM 91/20 PA-100583-EN
- - 27 27 - - - - - - B TFAM 18/20 PA-100584-EN
- 32 32 36 - - - - - - R2 TFAM91/18/20 PA-101508-EN
- - - - 27 - - - 27 - B TFAM 80/19 PA-100801-EN
- - - - - 27 - - 27 - B TFAM 85/19 PA-100805-EN
- - - - - - - 27 27 - B TFAM 17/19 PA-101848-EN
- - 27 - - 27 - - - - B TFAM 85/18 PA-100808-EN
- - - 27 - 27 - - - - B TFAM85/20 PA-100809-EN
- - - - 21 - 21 - - 27 B TFAM80/92/19E PA-101058-EN
Fig. 3.1.2: Remote Unit description in the offi cial ION-B Brochure (Rev. 03/07)
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