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HP E1368A, E1369A, E1370 A Microwave Switch and Dri ver Modul es User’s Manual
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6 HP E1368A, E1369A, E1370A Microwav e Switch and Driver Modules User’s Manual
IEC 801-2:1991/ E N5008 2-1 (1 992) : 4kVCD, 8k VA D
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Tested in a typical configuration in a n H P B-Size VXI mainfram e.
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HP E1368A, E1369A, E 1370A Microwave Switch and Driver Modules User’s Manual 7
HP E1368A, E1369A, E1370A Microwave Swit ch and Driver Module s User’s Manual
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This chapter describes the Microwave Switch modules, and co ntains
information on h ow to program them using SCPI (Standard Commands for
Programmable Instruments) comma nds. This chapter contains the
follo wing:
All three Microwave Switch modules provide switching of up to five
microwave coaxial switches or channels. The difference between the HP
E1368A Microwave Switch, the HP E1369A Microwav e Switch Driver,
and the HP E1370A Microwave Switch/Attenuator Driver modules are
describ ed below:
• The HP E1368A Microwa ve Switc h is a 3-channel, single-pole,
double-throw coaxial switch module. The three coaxial switches
provided have excellent electrical charact eristics for 502
transmission systems operating from DC t o 18 GHz. Th e module
panels are numbered 00, 01, and 02 to indicate the channel number
of each coaxial switch i nstalled.
• The HP E1369 A Microwa ve Switc h Driver is identical to the HP
E1368A, except the coaxial switches are not installed. The module
panel has three cutouts and various mounting holes that allow the
user to install up to three 3-port, 4-port, or 5-port, 42Vpk drive lev el
coaxial switches. Drive le ve l voltage can b e int erna l (+ 5 and
+12Vdc) or external (42Vpk). Th e modu le panel is nu mbered 00,
01, and 02 to indicate the channel number of each coaxial switch.
Channel 03 and 04 are not labeled on the panel. Up t o five coaxial
switches can be controlled (e.g. three internal, two external; five
external; etc) using the 14-pin connector.
• The HP E1370A Micr owa ve Switc h/At t enuator Driver is ident ical to
the HP E1369A, except the module panel and mounting holes have
been modified to allow th e user to install on e Singl e-pole,
Multi-throw Switch or one Step Attenuator. Because of the size of
the switches and the attenuators, the module takes up two B-size
slots. Driv e level vo ltage can be internal (+5 and +12 Vdc) or
external (42Vpk). Up to a Single-pole, Six-throw Switch can be
mounted on t o the assembly or u sed ext ernally using the 14-pin
connector.
Chapter 1Getting Started with the HP E1368A/69A/70A 11
NoteCheck mainframe power availability before using internal voltages.
CautionMAXIMUM VOLTAGE. The maximum voltage that may be
Power to operate the coaxial switches can be supplied internally or
externally, dependent o n the t yp e of coaxia l switch used.
• Internal voltages of either +5V or +12V can be select ed using
jumpers on the board. These voltages are routed through th e module
from the mainframe backplane.
• External volta g es of up to 42Vpk can be connected using the
EXTernal POWER terminal block.
applied to the EXTer nal POWER terminal is 42Vpk. Remove the
F3 fuse when using externa l switch power.
MAXIMUM CURRENT. The maximu m current that the control
circuit can accommodate is 1 amp per switch. Maximum
current also depends on the output capacity of the mainframe
or power supply used.
HP E1368A
Switches
The HP E1368A Microwave Switch module contains three HP 33311B
Option 011 (8672B Option 0 05 and 100) microwave Switches:
• Broad bandwidth (DC - 18 GHz).
• High isolation (>90 dB to 18 GHz).
• Excellent repeatability (typica lly 0.03 dB after 1,000,000 switchings).
• Internal 50Ω terminations.
These coaxial switches allow +5V coil voltage electrical chara cteristics
(drive volta ge) operation instead of the standard +24V. This is necessary
since the Microwave Switch module provides only +5V or +12V for driving
microwave switch es.
These coaxial s witches are break-b efore-make switches controlled by a
latching soleno id. Internal coil contacts open and remove coil voltage after
a switching operation to minimize the amount of heat dissipated n ear the
swit ch contacts.
When a coi l is energiz ed and a switching operation occurs, a pivot armature
in the microwave switch also operates b oth sets of contacts, either c losing
the switch or connecting it to the 50Ω termination.
Chapter 1Getting Started with the HP E1368A/69A/70A 13
HP plug-in modules installed in an HP mainframe or used with an HP
command module are treated as independent instruments each having a
unique secondary HP-IB address. Each instrument is also assigned a
dedicated error queue, input and outp ut buffers, status registers and, if
applicable, dedicated mainframe/command module memory space for
readings or data. An instrument may b e composed of a single plug-in
module (such as a counter) or multiple plug-in modules (for a switchbox or
scannin g voltme ter instrument).
Programming the Microwave Switch
To program th e modules u sing SCPI commands, you must select the
controller Modu le language, interface address, and appropr iate commands.
See the HP 7 5000 Series B Install ation and Getting Started Guid e or the
appropriate HP Command Module Manual for interface addressing and
controller language informat io n of Microwave Switch modul es in a
switchb ox or sca nning volt me ter configuration.
NoteThis discussion applies to SCPI programming. See Appendix B
(Microwave Switch Registers) for details on Microwave Switch modules
registers.
Selecting Channels: To address specific channels within a Microwave
Switch module in a switchbox, you must:
• send t he appropriate SCPI command string to the switchb ox (e.g.,
CLOSe, OPEN, etc.). For the Microwave Switch modules, use the
CLOSe command to c onnect the 2-port to the C-port. Use the OPEN
command to connect the 1-port to the C-port.
• s pecify the ca rd number (0 1-99)
• specify the channel number (00-04)
channel_list
=
}
Card NumbersThe card number identifies the modul e within a switchbox. Th e Microwave
Switch card number depen ds on the switchbox configuration (single-module
or multipl e-module) set for the switches.
• Single-module. For a s ingle-module switchbox, the card number is
always 01.
14 Getting Started with the HP E1368A/69A/70AChapter 1
• Multiple-module. For a multiple-module switchbox, the switch
module with the lowest log ical addr ess is always card nu mb er 01.
The card number with the next su ccessive logical address is 02, and
so on. Figure 1-2 i llustr at es the card numb ers and logical addresses
of a typical multipl e-module switchbox.
The logical addres s es no ted in Figure 1-2 apply to modules installed in an
HP 75000 Series B M a inframe (HP Model Number E1300/E1301) or in a
mainframe with a n HP E1405/E1406 Com ma nd Module. See the HP 75000
Series B Installation an d Getting Start ed Guide or the appropriate HP
Command Module Manual for mor e information on s witc hboxes and logical
addressing.
Figure 1-2. Card Numbers for Multip le-M odu le Swi tch box es
Channel NumbersThe channel number identifies the channel within a module. The
Microwave Switch channel numb er depends on the module (HP E1368 A
Microwave Switch or HP E1369A Microwave Switch Driver).
• HP E1 368A. Valid channel numbers are 00-04 (c hannels 03 a nd 04
are valid but not connected).
• HP E1 369A. Valid channel numbers are 00-04.
• HP E1 370A. Valid channel numbers are 00-04.
Channel AddressFor th e Microwave Switch Modules, the c hannel address (channel_list) is in
the form:
• (@ccnn) for a single channel
• (@ccnn, ccnn) for multiple channels
• (@ccnn:ccnn) for sequential channels
• (@ccnn:ccnn, ccnn:ccnn) for groups of sequential channels
• or any combination of t he ab ove
whe re "cc " i s the card number and "nn" i s t he channel n umber. Fo r
example, command strin g to c los e channel 02 of card number 1 is:
CLOSe (@0102)
Since "cc" (the ca rd number) must be sent, it becomes part of the chann el
number. Also, you can ignore leading zeros in the card numb ers. Thus, to
close channel 02, s end "102" instead of "0102". To close the above channel,
execute:
Chapter 1Getting Started with the HP E1368A/69A/70A 15
You can send SCPI commands in either short or l ong f orm. Refer to
Chapter 4 for more informati on. A long form examp le is:
CLOSe (@102)
The same command shown withou t the lower case letters is the short form.
The command then becomes:
CLOS (@102)
Some commands in this manu al are shown with brackets ([ ]). These are
implied or optional c ommands that you do not have to ex ecute. For
example, the
ROUTe command is an implied command and is shown in this
manual as:
[ROUT:]CLOS (@102)
Thus, to execute thes e commands, simply enter:
CLOS (@102)
Use the following program example to verify initial Microwave Switch
operation by closin g a channel and queryi ng channel c losure. Th e example
first resets the switchbox and then closes chann el 02 of a single Microwave
Switch module (card number 1) in the switchbox. The program next queries
the channel closure state. A returned "1 " s hows that t he command to close
the channel has been sent to the s witchbox. A retur n ed "0" shows that the
command to close t he channel has not been sent to the switchbox.
The comput er used in the exa mple is an HP Series 200/300 computer with
HP BASIC as t he pro gr am la ngu a g e. The computer interfaces to t he
mainframe using the Hewlett-Packard Int erface Bus (HP-IB).* Th e HP-IB
interface s elect co de is 7, the HP-IB prima ry addr ess is 09 , and the HP-IB
secondary address is 15. Ref er to the HP 75000 Series B Installation andGetting Started Guide for add ressing infor mat ion.
Example: Reset the switchbox and close channel 02.
10 OUTPUT 70915;"*RST" !Resets the module; opens al l
20 OUTPUT 70915;"CLOS (@102)" !Close channel 02.
30 OUTPUT 70915;"CLOS? (@102)" !Query ch annel 02.
40 ENTER 70915;Value !Enter r e su l ts in to v alue.
50 PRINT Val ue !Display resul ts (should return
60 END!Terminate prog ram.
* HP-IB is Hewlett-Packard’s impl emen ta tion of IEEE Std 488. 1-1984
channels.
"1").
16 Getting Started with the HP E1368A/69A/70AChapter 1
WarningSHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install, remove, or
configure the Microwave Switch modules. Before you remove
any installed module, disconnect AC power from the mainframe
and from other modules that may be connected to the
Microwave Sw itch.
CautionMAXIMUM POWER. The maxim u m power that may be applied
to any SMA input connector is 1 W (CW). The maximum voltage
that may be applied to the EXTERNAL B+ terminal is 42Vpk.
CONNECTING +5V/+12V. For the Microwave Switch, the
mainframe backplane +5V is fused at 4A, and the +12V line at
4A. The tota l curre nt drawn by all coaxial switches connected
to the Microwave Switch module must not exceed the fuse
rating of the supplies (mainframe and/or external) used.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. To prevent damage to the elec tr ical
components in the Micro wave Switch modules, observe
anti-static techniques whenever removing a module from the
mainframe or whenever working on a module.
Chapter 2Configuring the HP E1368A/69A/70A Modules 17
The logical address switch (LADDR) fa ctory setting is 120. You may have
changed the setting dur ing module insta llation. Valid address values are
from 0 to 255. If the Microwave Switch modules are used in a HP
E1300/E1301 Mainframe, refer to the HP 75000 Series B SystemInstallation an d Getting Start ed Guide for addressing information.
Otherwise, us e Figure 2-1 to c hange th e setting.
NoteThe address switc h selec t ed valu e must b e a multiple of 8 if the module is
the first modu le in a " switchbox" us ed in a VXIbus mainframe, and being
inst ru cted by SCPI comm a nds.
18 Configuring the HP E1368A/69A/70A ModulesChapter 2
The Microwave Switch modules generate interrupts after a channel has been
closed or opened. The se interrupts are sent to, and acknowledgments are
received from, the slot 0 module via the VXIbus backplane interrupt lines.
For most applications where the Microwave Switch modules are installed in
an HP 75000 Series B or Series C mainframe, thes e jumpers do not have to
be moved. This is because the VXIbus interrupt lines have th e same
priority a nd interrupt priority is estab lished by installing modules in slots
numerically closest to the slot 0 module. Thu s, s lot 1 (intern al to the Series
B mainframe) has a higher priority than slot 2 (also internal), s lot 2 has a
higher priority than slot 3, etc.
Refer to Figure 2-2 t o c hange t he int errupt priority. You can sel ect seven
different interrupt priorit y levels. Level 1 is the lowest priority and Level 7
is the highest priority. T he Module’s factory setting is Level 1. To change,
clip ou t and remove two jumpers from the old priority location. Install and
solder two n ew jumpers in the new priority locat ion (Figur e 2-2 s hows a
priority change from 1 to 7).
NoteBoth jumper locations must have the sa me interrupt p r iority level jumper
NOTE:
In this example, the priority
jumpers are moved from
position 1 t o posi ti on 7
(lowest priority to highest
priority).
installed. Changing t he prior it y level jumpers is not recommended. D o not
change unless specifically instructed to do so.
Chapter 2Configuring the HP E1368A/69A/70A Modules 19
Because the HP E1369A Microwave Switch modules do not have
Microwave Switches installed by the factory, it is necessary to install or
connect s witches bef ore operating. Determine t he numb er of s witches, and
whether the switches are to be installed on, or connected to, the module and
proceed as instructed below.
Installing Switches
on the Module
Installation described for up to three coaxial switches (channels 00-02) is
below. Figure 2-3 s hows the wiring diagram an d mounting hole centers for
each switch installed.
HP SWITCHES. The following 5V HP 333XX series and HP 876X s eri es
switches will function in the HP E1369A Microwave Switch module.
NoteThe corresponding HP 876X and 333XX s eries switches sho wn in the tab le
below are electrically and physically identical. The HP 8761, 8766 (33363),
8767 (33364),876 8 (33365 ),8769 (3336 6) series c oaxial switches will not
function in the HP E1369A Microwave Switch module becaus e the switch
coils are not split (separa te for each contact).
HP Part NumberFrequencyChara cterist ic
33311B/011 or 8762B/005/100
33311C/011 or 8762C/005/100
33312B/011 or 8763B/005/100
33312C/011 or 8763C/005/100
33313B/011 or 8764B/005/100
33313C/011 or 8764C/005/100
33314A/011 or 8765A/005/100
33314B/011 or 8765B/005/100
33314C/011 or 8765C/005/100
DC to 18 GHz
DC to 26. 5 GHz
DC to 18 GHz
DC to 26. 5 GHz
DC to 18 GHz
DC to 26. 5 GHz
DC to 4 GHz
DC to 20 GHz
DC to 26. 5 GHz
Impedance
50
Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
PortsInt er nal 50Ω
3
3
4
4
5
5
3
3
3
Termination
All ports
All ports
One port
One port
No ports
No ports
No ports
No ports
No ports
Auto Co i l
Interrupt
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
MTG
Hole
C
C
D
D
D
D
B
B
B
CautionThe maximum current that the control circuit can accommodate
20 Configuring the HP E1368A/69A/70A ModulesChapter 2
NON-HP SWITCHES. K&L Microwave Inc., Dynatech Microwave
Technology Inc., and RLC Electronics Inc. currently manufacture split coil
coaxial switches that w ill physically mount in t he HP E1369A Microwave
Switch module rear pa n el. All switches mount using the "A" hole centers
(see Figure 2-3). When selecting switches, refer to the diagram shown i n
Figure 1-1 to verify that the switch will electrically function in the HP
E1369A Microwave Switch module. R emember, switches must have split
coil operat ion with 42V maximum drive level.
is 1 amp per switch. Maximum current also depends on the
output capacity of the mainframe or power supply used.
After selec t ing the coaxial switch, install as follows:
1. Position the coaxial switch behind the channel 00 panel cut -out.
Secure to rear panel using two M2.5 x .45 metric screws
(P/N 0515-1373).
2. Route the 3-wire cab le (P/N E1368-61601) from J1 to the coaxial
switch t erminals. Solder th e "RED" wire to pi n 1. Solder the "YEL"
wire to pin C. Solder the "ORN" wire to pin 2.
NoteOn the HP 33314 (8765) series switches, it is necess ary to j u mper the two C
terminals so that b oth connect to the "YEL" wire.
3. Repeat steps 1 and 2 with remaining coaxial switches. The channel
01 switch connects to J2 connector, and channel 02 connects to J3.
CautionDo not leave an unused 3-wire cable installed in J1, J2, or J3 if
a coaxial switch is not installed. The center conductor of all
three connectors is connected to the switch operating voltage
at all times. Contact of this conductor to ground may cause the
fuse to open, or damage to the power supply or module.
4. Route the 3- wire cables behind the coaxial switches as not to catch or
snag on any o b jects dur ing mod ule installation in the mainframe or
control module (see Figure 2-3).
5. Select correct switch o p erati ng voltages (see “Sel ecting Switch
Power” later in this chapter).
Chapter 2Configuring the HP E1368A/69A/70A Modules 21
CautionThe maximum current that the control circuit can accommodate
Connection of up to five coaxial switc hes (channels 00-04) is describ ed
below. Figure 2-4 shows the wiring diagram for each switch c onnec t ed.
is 1 amp per switch. Maximum current also depends on the
output capacity of the mainframe or power supply used.
After selecting the coaxial switc hes, connect to the 14-pin connect or as
follows:
1. Route an 11-wire ca b le (not-supplied) from the 14-pin connector on
the Microwave Switch module to the switch location. Route the
wires through the panel holes as not to catch or snag on any objects
during mod ule installation in the mainframe or control module.
2. Connect all C+ terminals on all the coaxial switches to pin 6.
3. Connect CH00 through CH04 s witch terminals as required.
CH00 1 terminal to pin 13, and the 2 t erminal to pin 2.
CH01 1 terminal to pin 11, and the 2 t erminal to pin 5.
CH02 1 terminal to pin 3, a nd the 2 t erminal to pin 9.
CH03 1 terminal to pin 4, a nd the 2 t erminal to pin 10.
CH04 1 terminal to pin 7, a nd the 2 t erminal to pin 8.
4. Select correct switch o p erati ng voltages (see “Sel ecting Switch
Power” later in this chapter).
Figure 2-4. Microwave Switch Connecti on
Chapter 2Configuring the HP E1368A/69A/70A Modules 23
After th e coaxial switches have been installed (refer to “Installing Switc hes
on the HP E1369A” earlier i n this chapter), the correct o perating voltage
mu s t be selec ted. See installed switch specificat ions.
The Microwave Switch modules are capabl e of providing +5V (set at
factory) or +12V using t he mainframe power supply, or external volta g es of
up to 42Vpk can be con nected. Det ermine t he required operating voltage
and proceed as instr ucted below. Refer to Figure 2-5 as r equired.
CautionMAXIMUM CURRENT. The maximu m current that the control
circuit can accommodate is 1 amp per switch. Maximum
current also depend s on the output capacity of the mainframe
or power supply used.
Internal PowerVerify that the F3 fuse (P/N 2110-071 2) is instal led. Position jump ers as
instructed:
• For 5V, jumper JM2 installed, a n d jumper JM151 removed.
• For 12V, jumper JM151 installed, and jumper JM2 removed.
External PowerVerify that the F3 fuse (P/N 2110-0712) is removed (unsolder if necessary).
Connect the positive lead to EXT B+ on TB1, and the negative lead to EXT
GND on TB1. Connect leads to external power supply. Observe polarity.
CautionMAXIMUM VOLTAGE. The maximum voltage that may be
applied to the EXTer nal POWER terminal is 42Vpk.
• Maximum wire size is No. 16 AWG. Wire ends should be stripped 6
mm (~ 0.25 in.) and tinned to prevent single strands from shorting
adjac ent ter minals .
• It is rec omme nde d that each channel wire be identified (color coded
or marked) as the connection is not visible when the Microwave
Switch module is installed.
• Verify that wires ma ke good connections on screw terminals.
24 Configuring the HP E1368A/69A/70A ModulesChapter 2
Figure 2-6 shows the internal switch diagra m for t he var i ous HP 3-p or t,
4-port, and 5-port coaxial switches. All switches are sho wn in the "OPEN"
positio n. To minimize loss at high frequencies, use the following guidelin es
when maki ng c onnect ions.
Cabling Guideli nesFor frequencies to 18 GHz, use a goo d quality flexible type cab le a nd SMA
connectors. For frequencies 18 GHz, use semi-rigid type cable and APC 3.5
connectors.
Chapter 2Configuring the HP E1368A/69A/70A Modules 25
Installing a Switch or Attenuator on the HP E1370A
Microwave Switch/Attenuator Card
Because the HP E1370A Microwave Switch/Attenuator modules do not
have a Microwave Switch of Attenuator installed by the factory, it is
necessary to inst a l l or connect a switch or attenuator bef ore operating.
Determine wh e t her the switch or attenuator is to be install ed o n, or
connected to, t he module and proceed as instructed below.
Installing a Switch
or Att enuator on
the Module
Installation of a Microwave Switch of Attenuator is described below.
Figure 2-7 shows the wiring diagram and mou nti ng hol e centers for the
switch of att enu at or i nstalled.
HP SWITCHES. The following 5 V HP 3336xx series s wit ches wi ll
function in the HP E1370A Microwave Switch/Attenuator module.
HP Part NumberFrequenc yPorts
33363K
33364K
33365K
33366K
DC to 26.5GHz
DC to 26.5GHz
DC to 26.5GHz
DC to 26.5GHz
Single-Pole, thr ee-throw
Single-Pole, four-throw
Single-Pol e, five-thr ow
Single-Pol e, six-throw
Order all of the above with Option 011 (5 volt solenoi d assembl y) and
Option 008 (8 inch ribbon cab le).
HP ATTENUATORS. The following 5V HP 3332X Step Attenuators will
function in the HP E1370A Microwave Switch/Attenuator module.
HP Part
Number
FrequencyAttenuationAttenuation Step
Size
26 Configuring the HP E1368A/69A/70A ModulesChapter 2