Vertex Standard VX-4200 Series Service Manual page 13

The FVP-25 is an Encryption/DTMF Pageing Unit which
permits secure voice communications with station within
your network, while preventing others from listening us-
ing normal communications equipment. It allows paging,
and enables selective calling using DTMF tone sequences.
The FVP-35 is an Rolling Code Encryption Unit which
permits secure voice communications with station within
your network, while preventing others from listening us-
ing normal communications equipment.
The DVS-5 is a Voice Storage Unit which allows you to
record and play back incoming receiver audio.
The VTP-50 is a module which provides a complete multi-
chanel digital-access radio trunking system.
Each optional Unit is easily programmed the configula-
tions using a Vertex CE59 programmer with an IBM PC-
compatible computer.
Figure 1
Figure 3
Installation of Option
FVP-25/FVP-35/DVS-5/VTP-50
1. Disconnect the DC power cable.
2. Grasp the Top Case Cover with both hands, Lift up the
Top Case Cover to remove while sprend both side of
the Top Case Cover.
3. Referring to Figure 1, remove the five screws affixing
the Top Cover, then remove the top cover.
4. Referring to Figure 2, locate the empty connector for
the Optional Unit, connect the Optional Unit here.
5. Replace the Top Cover and five screws removed in the
first step, then replace the Top Case Cover. Installation
is now complete.
Do not install all Optional Unit at onece
Figure 2
Figure 4
G-1