Tait Limited TEL0046 Betriebsanleitung

Copyright TEL

You can identify the PA type by checking the product code printed on a label on the rear of the heat-
sink (product codes are explained in 

 in this Part of the manual, and 

 in Part A

shows typical labels).  You can further verify the PA type by checking the placement of an SMD
resistor in the table that is screen printed onto the PCB, similar to the example drawn below.  In this
example, the resistor indicates that the product was built as a T830 Series I compatible
T838-10-XXXX.  See below for further details on T830 Series I/Series II compatibility.

T838 and T839 PAs can be built compatible with either T830 Series I or Series II equipment.  You can
check whether your PA was built as Series I or Series II compatible by checking the table that is
screen printed onto the PCB, as explained above.

The table below explains briefly the differences between Series I and Series II compatible PAs.
Apart from these differences, Series I and Series II compatible PAs are electrically and mechanically
the same.   Refer to Part I for detailed information on Series I/Series II compatibility.

This manual covers the latest design T838 PA which uses an RF power module and is
identified by the product code T838-X0-XXXX.    Please refer to service manual
M830-00-100 for information on the earlier model (Series I) T838 PA which is identified
by the product code T838-10.

Item

Series I Compatible PA

Series II Compatible PA

*L201 (T838)

*L211 (T839)

not fitted

fitted

*R120

fitted

not fitted

cyclic keying

disabled

enabled

RF input

front panel SMC

rear panel BNC

front panel

Series I with black Tait logo

and Series I handle

Series II with blue Tait logo

and Series II handle

PRODUCT TYPE

MODEL

REV

SERIES

I

SERIES

II

T839-10

3A

T839-20

3A

T838-10

3A

T838-20

3A

The only function of this
resistor is to indicate the
product type.  It has no
effect on the circuitry or
operation of the PA.