Tektronix S46T Installation Manual
Keithley Instruments
S46T Microwave Switch System
(Description)
location
(Quantity)
number
reference
S46T-SPDT-KIT
1 to 8
SPDT unterminated relay (1)
S40-0154
SPDT relay 1 - 8
S46T-SP4T-KIT
A to D
4-40 x 3/16 PPHSEM screws (2)
4-40 x 3/16 PPHSEM
S40-N410-312
Relay A - D
S46T-SP6T-KIT
A to D
4-40 x 3/16 PPHSEM screws (2)
4-40 x 3/16 PPHSEM
S40-N410-312
Relay A - D
S46T-SPDT-KIT-26
1 to 8
SPDT unterminated relay (1)
Connecting cable (1)
RL-308
SYS46-311C
SPDT relay 1 - 8
28775 Aurora Road
Cleveland, Ohio 44139
1-800-935-5595
tek.com/keithley
High Performance Relay Installation Guide
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 follow the
applicable installation instructions.
Relay kits
Connection and wiring procedures in this document are intended for use by qualified
personnel only. Do not perform these procedures unless qualified to do so. Failure to
recognize and observe normal safety precautions could result in personal injury or death.
Use only the parts specified in the following table when servicing equipment. Use of improper
parts may expose the operator to hazardous voltages that could result in personal injury or
death.
Relay kit
model number
(18 GHz SPDT)
(18 GHz SP4T)
(18 GHz SP6T)
(26.5 GHz SPDT)
Relay
Kit parts summary
SPDT spacer (1)
Connecting cable (1)
4-40 x 3/8 PFH screws (4)
SP4T relay (1)
Ribbon cable (1)
Mounting plate (1)
4-40 x 3/8 PFH screws (4)
SP6T unterminated relay (1)
Ribbon cable (1)
Mounting plate (1)
SPDT spacer (1)
Keithley part
S40-SE05-307
SYS46-311C
4-40 x 3/8 PFH
RL-282-2
CA-286-1
4-40 x 3/8 PFH
RL-282-1
CA-286-1
S40-SE05-307
Installation
installation
(on page 3)
installation
(on page 6)
installation
(on page 6)
installation
(on page 3)
PA-913 Rev. B / December 2019 *PPA-913B* 1
S46T Microwave Switch System High Performance Relay Installation Guide
S46T-SP4T-KIT-26
A to D
4-40 x 3/8 PFH screws (4)
Ribbon cable (1)
4-40 x 3/8 PFH
S46-U100-350A
Relay A - D
Ribbon cable (1)
S46-U100-350A
Relay A - D
S46T-SPDT-KIT-T
1 to 8
SPDT terminated relay (1)
S40-0172
SPDT relay 1 - 8
(on page 3)
S46T-SPDT-KIT-26T
1 to 8
SPDT terminated relay (1)
RL-292-1
SPDT relay 1 - 8
(on page 3)
S46T-SP4T-KIT-T
A to D
4-40 x 3/16 PPHSEM screws (2)
Ribbon cable (1)
4-40 x 3/16 PPHSEM
S40-SV11-350
Relay A - D
S46T-SP6T-KIT-T
A to D
4-40 x 3/16 PPHSEM screws (2)
Ribbon cable (1)
4-40 x 3/16 PPHSEM
S40-SV11-350
Relay A - D
S46T-SP4T-KIT-26T
A to D
4-40 x 3/16 PPHSEM screws (2)
Ribbon cable (1)
4-40 x 3/16 PPHSEM
S40-SV11-350
Relay A - D
S46T-SP6T-KIT-26T
A to D
4-40 x 3/16 PPHSEM screws (2)
Ribbon cable (1)
4-40 x 3/16 PPHSEM
S40-SV11-350
Relay A - D
S46T-XFER-KIT
A to D
M3 x 5 PPH screws (4)
Ribbon cable (1)
M3 x 5 PPH
S46-U100-350A
Relay A - D
Ribbon cable (1)
S46-U100-350A
S46T-MSPDT-KIT
A to D
4-40 x 1-1/2 PPH screws (2)
Ribbon cable (1)
4-40 x 1-1/2 PPH
S46-U100-350A
Relay A - D
S46T-MSPDT-KIT-26
A to D
4-40 x 1-1/2 PPH screws (2)
Ribbon cable (1)
4-40 x 1-1/2 PPH
S46-U100-350A
Relay A - D
(26.5 GHz SP4T)
S46T-SP6T-KIT-26
(26.5 GHz SP6T)
(18 GHz SPDT)
(26.5 GHz SPDT)
(18 GHz SP4T)
(18 GHz SP6T)
(26.5 GHz SP4T)
(26.5 GHz SP6T)
SP4T unterminated relay (1)
Mounting plate (1)
A to D 4-40 x 3/8 PFH screws (4)
SP6T unterminated relay (1)
Mounting plate (1)
Connecting cable (1)
Connecting cable (1)
SP4T terminated relay (1)
SP6T terminated relay (1)
SP4T terminated relay (1)
SP6T terminated relay (1)
RL-312
S40-N410-312
4-40 x 3/8 PFH
RL-309
S40-N410-312
SYS46-311C
SYS46-311C
RL-317
RL-318
RL-310
RL-290-1
installation
(on page 6)
installation
(on page 6)
installation
installation
installation
(on page 6)
installation
(on page 6)
installation
(on page 6)
installation
(on page 6)
(18 GHz XFER)
S46T-XFER-KIT-26
(26.5 GHz XFER)
(18 GHz SPDT)
(26.5 GHz SPDT)
XFER unterminated relay (1)
XFER mounting plate (1)
A to D M3 x 5 PPH screws (4)
XFER unterminated relay (1)
XFER mounting plate (1)
SPDT unterminated relay (2)
Mounting plate (1)
Relay spacer (1)
SPDT unterminated relay (2)
Mounting plate (1)
Relay spacer (1)
RL-304
S40-N410-311
M3 x 5 PPH
RL-308
S40-N410-311
S40-0154
S40-N410-309
S40-N410-313
RL-308
S40-N410-309
S40-N410-313
installation
(on page 6)
Relay A - D
installation
(on page 6)
installation
(on page 6)
installation
(on page 6)
2 PA-913 Rev. B / December 2019
S46T Microwave Switch System High Performance Relay Installation Guide
Installation
Turn off the power and disconnect the line cord before installing the new relays. Failure to
turn off the power and disconnect the line cord before installing the relays may result in
personal injury or death due to electric shock.
Before installing the relays, remove the screws that secure the S46 top cover, and remove the cover.
To find the applicable installation procedure for your specific kit, refer to the Relay kits (on page 1
) section.
SPDT relay 1 through 8 installation
To install the SPDT relays 1 through 8
1. Reference the following figure and remove the six screws that secure the SPDT relay mounting brackets to
the S46T chassis.
2. Remove the SPDT assembly from the front panel.
Figure 1: SPDT relay mounting bracket
3. Reference the following figure and remove the two screws holding the relay spacers in the relay column
containing the desired relay installation location.
4. Loosen the remaining four SPDT screws to facilitate second and third row installation.
5. For terminated relays, replace the spacer in the desired location with the relay. Refer to the inset in the
following figure and locate the Terminated SPDT relay installation.
For unterminated relays, replace the spacer in the desired location with the relay and an S40-SE05-307
spacer. Refer to the inset in the following figure and locate the Unterminated SPDT relay installation.
PA-913 Rev. B / December 2019 3
S46T Microwave Switch System High Performance Relay Installation Guide
You can install either relay type (terminated or unterminated) in any of the eight available locations.
However, you will need to use the shorter relay spacer screws when installing relays on the right side
of the instrument column.
Figure 2: SPDT 1 through 8 relay installation
6. Install the two screws removed in step 2 in the new relay column.
7. Thread the red and black wires (from the relay) through the PVC Tubing (PVC tubing & TX-52-7 are part of
SYS46-311C)(not shown). The TX-52-7 may be cut to a length that will allow the relay assembly to be
removed without removing the top cover.
8. Refer to the following figure and solder the two control wires to the terminals of the relay.
4 PA-913 Rev. B / December 2019
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