Instruction manual

Installation
64 025-9416
5.8” Cable ties (Part
No. 265-0001)
12 position
Wiedmuellers
(Part No. 401-0016)
Connect to terminal
block adapter
Cylindrical ferrites
(Part No. 305-0735)
To radio station
connection
Figure 27. Radio Station Interface Cabling to Terminal Block Adapter
Note: Zetron recommends using stranded wire for the radio station interface, as it provides
superior durability. The wire should be at least 14 gauge. It is also useful to have
different colored wrap to easily identify each signal lead.
66-Type Punchdown Block Installation
If the telco connections were made using a 66-type punchdown block, then the lower half of the
block (pins #13-25 and 38-50) provides the leads for the radio station interface. Refer to Table 9
for descriptions of each pin on the Model 640 RJ21 connector.
Follow the steps below to interface the radio station equipment to the optional punchdown block:
q
1. Power-down the paging terminal.
q
2. Connect the leads for each required radio signal to the punchdown terminal as shown
in Figure 28.