1
PA-913 Rev. A / 12-05
S46T Microwave Switch System
Relay Installation Guide
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
(440) 248-0400
www.keithley.com
Introduction
This guide contains information on S46T relay installation and system configuration that is necessary after
installing new relays. To install a relay, refer to
“Relay kits” on page 1
for a description of the kits and then
follow the applicable installation instructions.
WARNING:
The information in this section is only intended for qualified service
personnel. Do not attempt to replace parts or otherwise service the
equipment unless you are qualified to do so.
Relay kits
Table 1
summarizes available relay kits and part numbers.
WARNING:
Use only the parts specified in
Table 1
of this guide when servicing the
equipment. Use of improper parts may expose the operator to
hazardous voltages that could result in personal injury or death.
Table 1
S46T relay kits
Relay kit
model number
Description
Relay
location
Kit parts summary
(Quantity)
Keithley
part number
Installation
reference
S46T-SPDT-KIT
18GHz SPDT
1 to 8 SPDT un-terminated relay (1)
S40-0154
“SPDT relay 1–
8 installation”
on page 3
SPDT spacer (1)
S40-SE05-307
Connecting cable (1)
SYS46-311C
S46T-SP4T-KIT
18GHz SP4T A to D 4-40 ×1/4 PPHSEM screws (2) 4-40X1/4PPHSEM
“Relay A–D
installation” on
page 5
4-40 ×3/8 PFH screws (4)
4-40x3/8PFH
SP4T relay (1)
RL-282-2
Ribbon cable (1)
CA-286-1
Mounting plate (1)
S40-N410-312
S46T-SP6T-KIT
18GHz SP6T A to D 4-40 ×1/4 PPHSEM screws (2) 4-40X1/4PPHSEM
“Relay A–D
installation” on
page 5
4-40 ×3/8 PFH screws (4)
4-40x3/8PFH
SP6T un-terminated relay (1)
RL-282-1
Ribbon cable (1)
CA-286-1
Mounting plate (1)
S40-N410-312
S46T-SPDT-KIT-26
26.5GHz
SPDT
1 to 8 SPDT un-terminated relay (1)
RL-308
“SPDT relay 1–
8 installation”
on page 3
SPDT spacer (1)
S40-SE05-307
Connecting cable (1)
SYS46-311C
S46T-SP4T-KIT-26
26.5GHz
SP4T
A to D 4-40 ×3/8 PFH screws (4)
4-40x3/8PFH
“Relay A–D
installation” on
page 5
SP4T un-terminated relay (1)
RL-312
Mounting plate (1)
S40-N410-312
Ribbon cable (1)
S46-U100-350A
