PA-910 Rev. B / 12-05
2
Installation
Before installing the relays, remove the screws that secure the S46 top cover, and then remove the cover.
WARNING:
Disconnect the line cord and all cables from the S46 before removing the top
cover.
To find the applicable installation procedure for your specific kit, refer to the Installation reference column contained
in
Table 1
, and then perform the installation.
18, 26.5, and 40GHZ Relay 1-8 installation
1.
Remove the nuts securing the cover plate over the mounting hole where the new relay is to be installed (see
Figure 1
).
2.
Install the support SPDT bracket at the relay location securing it with two nuts.
3.
Thread the red and black wires (from the relay) through the PVC Tubing (TX-52-7)(not shown—part of con-
necting cable SYS46-311C). The TX-52-7 may be cut to a length that will allow the relay assembly to be
removed without removing the top cover.
4.
Referring to
Figure 1
, solder the two control wires to the terminals of the relay.
5.
Install the relay on the support bracket using the supplied 4-40X5/8PPH screws.
6.
Plug the wire connector into the appropriate circuit board connector (see
Figure 2
).
7.
Install the top cover, and then configure the system as covered in
“System configuration” on page 3
of this
guide.
Figure 1
RELAY 1-8 installation
S46-SPDT-KIT-40
(40GHz SPDT)
1 to 8
4-40 ×5/8 PPH screws (2)
4-40X5/8PPH
“18, 26.5, and 40GHZ Relay 1-8
installation” on page 2
SPDT
relay
(1)
21409
SPDT bracket (1)
SYS46-314A
Connecting cable (1)
SYS46-311C
S46-SP4T-KIT-40
(40GHz SP4T)
A to D
SP4T relay (1)
S40-0013
“18GHz, 26.5 and 40GHz Relay
A-D installation” on page 3
Ribbon cable (1)
S46-U100-350A
S46-SP6T-KIT-40
(40GHz SP6T)
A to D
SP6T relay (1)
S40-0166
“18GHz, 26.5 and 40GHz Relay
A-D installation” on page 3
Ribbon cable (1)
S46-U100-350A
Table 1 (Continued)
S46 relay kits
Relay kit
model number
(Description)
Relay
location
Kit parts summary
(Quantity)
Keithley part
number
Installation reference
Relay
SPDT Bracket
Top Cover
4-40X5/8PPH Screws
S46 Front Panel
Red Wire
Black Wire
Top view of SPDT Relay
(+)
()
NO
C
NC
