RED SW 1
RED SW 2
Part of the redundant switch control facility, provides two
waveguide switch coil drive outputs. Each output is nominally
+24 V dc at 1.6 A, pulsed for 100 ms. An internal 1.8 A current limit
is provided along with flywheel diodes for protection, further
simplifying the waveguide switch interface considerations. RED SW
1 should be connected so that when asserted, the RF output from
the unit is switched to the antenna. RED SW 2 should be connected
so that when asserted, the RF output from the unit is switched to
the dummy load.
RS TX+
RS TX
7
RS RX+
RS RX
7
RS GND
Provides connection for a RS-485 or RS-422 interface allowing
connection as a slave to an asynchronous, half duplex, multi-drop,
four-wire bus. This gives full remote control and monitoring of the
HPA as part of an integrated system. The main features, protocols
and operation of the serial bus are described in section 6.
HBN63xx-1, Issue 8, Page 26
