Keithley S46T-SPDT-KIT User manual

1PA-913 Rev. A / 12-05
S46T Microwave Switch System
Relay Installation Guide
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
[phone]
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 onlythepartsspecifiedin 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

PA-913 Rev. A / 12-05 2
Installation
Before installing the relays, remove the screws that secure the S46T top cover, and then remove the cover.
WARNING: Disconnect the line cord and all cables from the S46T before
removing the top cover.
S46T-SP6T-KIT-26 26.5GHz
SP6T
A to D 4-40 ×3/8 PFH screws (4) 4-40x3/8PFH “Relay A–D
installation” on
page 5
SP6T un-terminated relay (1) RL-309
Mounting plate (1) S40-N410-312
Ribbon cable (1) S46-U100-350A
S46T-SPDT-KIT-T 18GHz SPDT 1 to 8 SPDT terminated relay (1) S40-0172 “SPDT relay 1–
8 installation”
on page 3
Connecting cable (1) SYS46-311C
S46T-SPDT-KIT-26T 26.5GHz
SPDT
1 to 8 SPDT terminated relay (1) RL-292-1 “SPDT relay 1–
8 installation”
on page 3
Connecting cable (1) SYS46-311C
S46T-SP4T-KIT-T 18GHz SP4T A to D 4-40 ×3/16 PPHSEM screws (2) 4-40X3/16PPHSEM “Relay A–D
installation” on
page 5
SP4T terminated relay (1) RL-317
Ribbon cable (1) S40-SV11-350
S46T-SP6T-KIT-T 18GHz SP6T A to D 4-40 ×3/16 PPHSEM screws (2) 4-40X3/16PPHSEM “Relay A–D
installation” on
page 5
SP6T terminated relay (1) RL-318
Ribbon cable (1) S40-SV11-350
S46T-SP4T-KIT-26T 26.5GHz
SP4T
A to D 4-40 ×3/16 PPHSEM screws (2) 4-40X3/16PPHSEM “Relay A–D
installation” on
page 5
SP4T terminated relay (1) RL-310
Ribbon cable (1) S40-SV11-350
S46T-SP6T-KIT-26T 26.5GHz
SP6T
A to D 4-40 ×3/16 PPHSEM screws (2) 4-40X3/16PPHSEM “Relay A–D
installation” on
page 5
SP6T terminated relay (1) RL-290-1
Ribbon cable (1) S40-SV11-350
S46T-XFER-KIT
18GHz
XFER
A to D M3X5PPH screws (4) M3X5PPH “Relay A–D
installation” on
page 5
XFER un-terminated relay (1) RL-304
XFER mounting plate (1) S40-N410-311
Ribbon cable (1) S46-U100-350A
S46T-XFER-KIT-26
26.5GHz
XFER
A to D M3X5PPH screws (4) M3X5PPH “Relay A–D
installation” on
page 5
XFER un-terminated relay (1) RL-308
XFER mounting plate (1) S40-N410-311
Ribbon cable (1) S46-U100-350A
S46T-MSPDT-KIT
18GHz
SPDT
A to D 4-40x1-1/2PPH screws (2) 4-40x1-1/2PPH “Relay A–D
installation” on
page 5
SPDT un-terminated relay (2) S40-0154
Mounting plate (1) S40-N410-309
Relay spacer (1) S40-N410-313
Ribbon cable (1) S46-U100-350A
S46T-MSPDT-KIT-26
26.5GHz
SPDT
A to D 4-40x1-1/2PPH screws (2) 4-40x1-1/2PPH “Relay A–D
installation” on
page 5
SPDT un-terminated relay (2) RL-308
Mounting plate (1) S40-N410-309
Relay spacer (1) S40-N410-313
Ribbon cable (1) S46-U100-350A
Table 1 (Continued)
S46T relay kits
Relay kit
model number Description Relay location Kit parts summary (Quantity) Keithley part number Installation reference

3PA-913 Rev. A / 12-05
To find the applicable installation procedure for your specific kit, refer to the Installation reference column
contained in Table 1, and then perform the referenced installation.
SPDT relay 1–8 installation
1. Remove the 6 screws that secure the SPDT relay mounting brackets to the S46T chassis
(see Figure 1) and remove the SPDT assembly from front panel.
2. Remove the 2 screws holding relay spacers in the relay column containing the desired relay
installation location (see Figure 3) .
3. Loosen remaining 4 SPDT screws to facilitate second and third row installation.
4. For terminated relays: replace the spacer in the desired location with the relay (refer to the inset in
Figure 3 labeled Terminated SPDT relay installation).
For un-terminated relays: replace the spacer in the desired location with the relay and an S40-SE05-
307 spacer (refer to the inset in Figure 3 labeled Un-terminated SPDT relay installation).
5. Install the 2 screws removed in step 2 in the new relay column.
6. Thread the red and black wires (from the relay) through the PVC Tubing (PVC tubing, TX-52-7, is
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.
7. Referring to Figure 2, solder the two control wires to the terminals of the relay.
8. Install the relay mounting bracket using the screws removed in step 1.
9. Plug the wire connector into the appropriate circuit board connector (see Figure 4).
10. Install the top cover, and then configure the system as covered in “System configuration” on
page 6 of this guide.
Figure 1
Remove SPDT 1–8 relay mounting brackets
Figure 2
Connecting control wires to SPDT relay
NO NCO NO NCO
NO NCO
R1
R1
R1
R1
R1
R1
R1
R1
PWR
ERR
135
246
RA
135
246
RB
135
246
RC
135
246
RD R2 R4 R6 R8
R7
R1 R3 R5
SPDT relay
moun ing bracke s
Screws
(6 places)
SPDT relay moun ing bracke s
Red Wire Black Wire
(+) ()
NO C NC
Termina ed
SPDT Relay
Un- ermina ed
SPDT Relay
(+) ()
NO C NC
Red Wire Black Wire

PA-913 Rev. A / 12-05 4
Figure 3
SPDT 1–8 relay installation
Figure 4
Relay connector locations
Termina ed
SPDT relay ins alla ion
Relay spacer screws
(2 per relay column)
Termina ed
SPDT relay
NOTE Use he shor er relay spacer screws when
ins alling he righ -mos relay column.
Ei her relay ype (Termina ed or
Un-Termina ed) may be ins alled in any
of he 8 loca ions.
S40-SE05-307
Un- ermina ed
SPDT relay
Relay spacer screws
(2 per relay column)
Un- ermina ed
SPDT relay ins alla ion
Relay
1
2
3
4
5
6
7
8
Connector
J18
J19
J20
J21
J22
J23
J24
J25
Relay
A
B
C
D
Connector
J5
J6
J7
J8
RELAY 18
Connec ors
(J18J25)
RELAY AD
Connec ors
(J5J8)
RB
J6
RC
J7
RD
J8
R1
J18
R8
J28
To Power
Supply Board
RA
J5

5PA-913 Rev. A / 12-05
Relay A–D installation
1. Remove the four screws securing the cover plate over the mounting hole where the new relay is to
be installed (see Cover plate inset in Figure 6).
2. Connect the supplied ribbon cable to the relay:
XFER relays (transfer relays), 26.5GHz un-terminated relays, and MSPDT relays—solder the
ribbon cable to the relay use Figure 5 as a guide.
All other A–D relays—secure the ribbon cable to the relay with the two supplied screws (use
Figure 5 as a guide).
3. Using the applicable inset in Figure 5, install the relay in the mounting hole, and then secure it with
the four screws removed in step 1.
4. Plug the ribbon connector into the appropriate circuit board connector (see Figure 4).
5. Install the top cover, and then configure the system as covered in “System configuration” on
page 6 of this guide.
Figure 5
Connecting control wires to relays A-D
Plug in cable securing
wi h he supplied
screws.
26.5GHz
Un- ermina ed
Relay
S40-N410-309
XFER Relay (+)
()
Spacer
(S40-N410-313)
(+)
()
BN
BN
OR
GN
Relay
(RL-308 or
S40-0154 )
S46-U100-350
Con rol cable
(+) ()
BN OR
Transfer
Relay
S46-U100-350
Con rol cable
- Termina ed Relays
- Un- ermina ed 18GHz Relays
Termina ed
Relays
Un- ermina ed
18GHz Relays
S46-U100-350
Con rol cable
-4 -3
-2
+C
-1
Whi e (-4)
Viole (-3)
Orange (-1) Brown (+28V)
Green (-2)
SP4T
SP6T
MSPDT Relay
-5 -4
-2
+C
-1
-3
-6
Whi e (-4)
Brown (+28V)
Viole (-3)
S46-U100-350
Con rol cable
Red (-5)
Orange (-1)
Green (-2)
Yellow (-6)

PA-913 Rev. A / 12-05 6
Figure 6
A-D relay installation
System configuration
After installing the new relays, you must program the S46T for the new relay configuration with the following
command:
:ROUT:CONF:CPOL <clist>
<clist> is defined as follows:
clist = (@0 | 3-6, 0 | 3-6, 0 | 3-6, 0 | 3-6, 0 | 1, ... 0 | 1)
Relay: A B C D 1 ... 8
NOTE: All switch locations must be included in the <clist> whether or not all locations
are populated. The numeric value (1 or 3-6) indicates the number of throws,
while a value of 0 indicates that a location is not populated.
For example, if RELAY A and RELAY B are SP6T, RELAY 1 and RELAY 2 are
SPDTs, and all other locations are not populated, the command syntax would
be:
:ROUT:CONF:CPOL (@6,6,0,0,1,1,0,0,0,0,0,0)
S46T-MSPDT-KIT and S46T-XFER-KIT are programmed with a value of 3 (not the number of throws as
other relays). The MSPDT top relay uses the first channel assignment for relay's A-D, the second channel
controls the lower relay. The XFER relay uses the first channel assignment for relay's A-D.
Terminated SP4T relays are programmed with a value of 6. Ports 2, 3, 5 and 6 control channels are used.
See Section 3 of the S46T Instruction Manual for detailed programming information.
Cover pla e