Connecting The Line Cord; Connecting The Chassis Ground Cable; Connecting The Rf Cables; Connecting The Safety Interlock - Ametek Teseo CBA Series Operation Manual

3.2

Connecting the line cord

CAUTION!
It is essential that the amplifier operates from a line source that does not
apply voltages and frequencies between the line conductors (or between
either line conductor and ground) that are outside the range detailed in the
specification sheet.
CAUTION!
Ensure that the line cord does not interfere with the operation of the rear
panel line-input circuit breaker(s).
3.3

Connecting the chassis ground cable

To improve EMC immunity, bond the amplifier to a good ground with a
conductor of 4 sq.mm or the equivalent earth braid, a ground post being
provided for this purpose on the rear panel. Although it provides an extra
measure of safety, this is NOT a protective earth. The protective earth is the
ground pin on the line supply connector(s).
3.4

Connecting the RF cables

CAUTION!
Ensure that the RF source is OFF when making connections.
CAUTION!
Ensure any cables and connectors mating with the RF input and RF output
connectors are of 50-ohm impedance, and are designed to handle the power
at the frequencies generated by the amplifier. Although very similar, 75-ohm
connectors must not be used.
Use cable with the lowest loss that is practical. The connectors should not be over-
tightened, and any tightening instructions for the connector should be observed.
Ensure that any bends in cables conform to the recommended minimum-bend-radius
of those cables, especially where the cables enter the RF connectors.
3.5

Connecting the Safety interlock

WARNING!
Use the safety interlock facility within danger areas.
If the amplifier is to be connected to an antenna, personnel may be exposed to non-
ionising radiation. In such systems, the safety interlock function should be used.
Connection (via the rear panel) is with a BNC-type connector. We recommend that
shielded cable is used for all interlock connections to ensure EMC immunity.
The current in the safety-interlock circuit is less than 1mA, so cable with a low current
capacity is suitable.
CBA Manual: H012161 Rev: 3
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