MCE/Weinschel 8501 High Power Switch Unit Operation & Installation Manual

IM-357
IM-357
Model 8501
Operation & Installation Manual
Model 8501
SmartStep™ High Power Switch Unit
(P/N 193-8091-X)
This documentation may not be reproduced in any form, for any
purpose unless authorized in writing by MCE/Weinschel Corporation.
© MCE/Weinschel Corporation
Frederick, Maryland
2002
Manual Rev. 1/03
1
SAFETY SUMMARY
SAFETY SUMMARY
DEFINITIONS.
• To minimize shock hazard, the instrument chassis
The following definitions apply to WARNINGS,
CAUTIONS, and NOTES found throughout this manual.
WARNING
must be connected to an electrical ground. Using
the supplied three-conductor power cable ensures
that the instrument can be firmly connected to the
ac power source and electrical ground at a
grounded power outlet. If using a 3-2 wire
adapter be sure to connect the ground lead to earth
ground.
• Use the buddy system any time work involving
An operating or maintenance procedure, practice,
statement, condition, etc., which, if not strictly
observed, could result in injury and/or death of
personnel. Do not proceed beyond a WARNING
symbol until all the indicated conditions have been
fully understood and/or met.
active high voltage components is required. Turn
OFF the power before making/breaking any
electrical connection. Regard any exposed
connector, terminal board, or circuit board as a
possible shock hazard. DO NOT replace any
component or module with power applied.
• If test conditions to live equipment are required,
ground the test equipment before probing the
voltage or signal to be tested.
CAUTION
• Personnel working with or near high voltage
should be familiar with modern methods of
resuscitation.
An operating or maintenance procedure, practice,
statement, condition, etc., which, if not strictly
observed, could result in damage or destruction of the
equipment or long-term health hazards to personnel.
Do not proceed beyond a CAUTION symbol until all
the indicated conditions have been fully understood
and/or met.
NOTE
An essential operating or maintenance procedure,
condition, or statement that must be highlighted.
• DO NOT wear jewelry (rings, bracelets, metal
watches, and/or neck chains) while working on
exposed equipment. Be very cautious about
using hand tools near exposed backplanes, bus
bars, and/or power supply terminals. Use
properly insulated tools. When making test
connections to the power supply terminals and
bus bars, use only insulated probe tips.
• Verify that the instrument is set to match the
available line voltage and the correct fuse is
installed.
• DO NOT install substitute parts or perform any
GENERAL PRECAUTIONS.
The following are general precautions that are not related
to any specific procedure and, therefore, do not appear
elsewhere in this publication. These are precautions that
personnel must understand and apply during various phases of
instrument operation or service.
WARNING
unauthorized modification to this instrument.
Contact Weinschel Corporation to acquire any
information on replacement parts or returning
the instrument for repair. Unauthorized
modification can cause injury to personnel and/or
destruction of the instrument.
• Operating personnel must not remove instrument
covers. Component replacement or adjustments
MUST BE performed by qualified service
personnel.
• DO NOT operate the instrument near or in the
presence of flammable gases or fumes.
• Potentially lethal voltages are present in this
instrument. Serious shock hazards from voltages
above 70 volts may exist in any connector,
chassis, or circuit board. Observe the following
precautions:
DETAILED PRECAUTIONS.
The following WARNINGS, CAUTIONS and NOTES
appear throughout the text of this manual and are repeated here
for emphasis.
i
SAFETY SUMMARY
NOTE
CAUTION
• All procedures and/or steps identified as
must be followed exactly as written and
according to industry accepted ESDS device
handling procedures. Failure to comply WILL
RESULT in ESDS damage.
• DO NOT use a nylon bristle brush in the solvent
as the bristles may dissolve and cause damage to
the circuit card or component.
DO NOT return any instrument or component to
Weinschel Corporation without receiving prior
factory authorization.
SAFETY SYMBOLS.
The following symbols are used to identify safety hazards
found throughout this publication and/or located on the
instrument.
• DO NOT use ultrasonic cleaning on parts or
assemblies containing electrical or electronic
components.
• DO NOT bend pins of electrical connectors
when using fiber-bristle brush.
CAUTION
HIGH VOLTAGE
• Compressed air used for cleaning and/or drying
can create airborne particles that may enter the
eye. Goggles/faceshields should be worn. DO
NOT direct air stream towards self or other
personnel. Pressure should be restricted to a
maximum of 15 psi to avoid personal injury.
• Under no circumstances should a wire brush, steel
wool, or abrasive compound be used on any
surface. Using these items will cause extensive
damage to the instruments surface.
ii
WARNING
HIGH
VOLTAGE
Model 8501
IM-357
TABLE OF CONTENTS
1. GENERAL INFORMATION.................................................................................................................................................4-6
1-1. PURPOSE ....................................................................................................................................................................... 4
1-2. SCOPE ........................................................................................................................................................................... 4
1-3. EQUIPMENT DESCRIPTION...................................................................................................................................... 4
1-4. USING THE 8501 (MODEL NUMBER INDEX)......................................................................................................... 4
1-5. UNPACKING AND INSPECTION .............................................................................................................................. 5
1-6. RESHIPMENT INSTRUCTIONS................................................................................................................................. 5
1-7. STORAGE INSTRUCTIONS........................................................................................................................................ 5
1-8. RELATED MANUALS................................................................................................................................................. 6
1-9. ELECTROSTATIC DISCHARGE SENSITIVE (ESD)................................................................................................ 6
1-10. ABBREVIATIONS & ACRONYMS .......................................................................................................................... 6
1-11. SAFETY CONSIDERATIONS ................................................................................................................................... 6
1-12. POWER REQUIREMENTS ........................................................................................................................................ 6
1-13. ENVIRONMENTAL REQUIREMENTS ................................................................................................................... 6
2. SPECIFICATIONS ...............................................................................................................................................................7-8
2-1. GENERAL SPECIFICATIONS .................................................................................................................................... 7
2-2. PHYSICAL DIMENSIONS........................................................................................................................................... 8
3. INSTALLATION ...................................................................................................................................................................8-9
3-1. RACKMOUNTING....................................................................................................................................................... 8
3-2. INTIAL SETUP ............................................................................................................................................................. 8
3-3. INPUT/OUTPUT OPTIONS ......................................................................................................................................... 8
3-3.1. POWER ENTRY MODULE ASSEMBLY ................................................................................................................ 9
3-3.2. SWITCH PORT CONNECTORS............................................................................................................................... 9
4. FRONT PANEL CONTROLS & INDICATORS .................................................................................................................. 10
4-1. FRONTPANEL LEDS................................................................................................................................................. 10
4-2. SWITCH CONTROLS & LEDS ................................................................................................................................. 10
5. REMOTE OPERATION ...................................................................................................................................................11-23
5.1. IEEE-488 INTERFACE BUS CONNECTOR ............................................................................................................. 11
5-2. GPIB ADDRESS/SERIAL COMMUNICATIONS SETTINGS.............................................................................11-12
5-3. IEEE-488 (GPIB) BUS OPERATION......................................................................................................................... 13
5-4. SERIAL OPERATION ............................................................................................................................................... 14
5-4.1. RS-232 OPERATION............................................................................................................................................... 15
5-4.2. RS-422/485 OPERATION........................................................................................................................................ 16
5-5. STATUS REPORTING ..........................................................................................................................................17-19
5-6. GENERAL SYNTAX STRUCTURE.......................................................................................................................... 18
5-6.1. SYNTAX OF QUERIES........................................................................................................................................... 18
5-6.2. SYNTAX OF COMMANDS .................................................................................................................................... 18
5-6.3. OUTPUT DATA FORMAT ..................................................................................................................................... 19
5-6.4. NOTATIONAL CONVENTION.............................................................................................................................. 19
5-7. 488.2 COMMON COMMANDS............................................................................................................................20-21
5-8. SWITCH CONTROL COMMANDS .......................................................................................................................... 22
MCE / Weinschel Corporation
2
Model 8501
IM-357
6. MAINTENCE......................................................................................................................................................................... 23
6-1. INSPECTION .............................................................................................................................................................. 23
6-2. PREVENTIVE MAINTENANCE............................................................................................................................... 23
6-3. SPECIAL CLEANING INSTRUCTIONS .................................................................................................................. 23
6-3.1. MICROWAVE COAXIAL CABLE ASSEMBLIES..................................................................................... 23
6-3.2. CIRCUIT CARDS AND MODULES ............................................................................................................ 24
6-3.3. MACHINED SURFACES AND HARDWARE............................................................................................ 24
6-3.4. CHASIS CLEANING .................................................................................................................................... 24
6-3.5. CONNECTOR CLEANING .......................................................................................................................... 24
6-4. LINE VOLTAGE FUSE REPLACEMENT ................................................................................................................ 25
7. REPLACABLE PARTS LIST................................................................................................................................................. 26
8-1. UNDERSTANDING REFERENCE DESIGNATORS ............................................................................................... 26
8-2. ORDERING INFORMATION ............................................................................................................................. 26
8-3. DRAWING NUMBER ......................................................................................................................................... 26
8-4. REPLACABLE PARTS LIST .............................................................................................................................. 26
8-4.1. REFERENCE DESIGNATOR....................................................................................................................... 26
8-4.2. DESCRIPTION .............................................................................................................................................. 26
8-4.3. PART NUMBER............................................................................................................................................ 26
8-4.4. VENDOR PART NUMBER .......................................................................................................................... 26
8-5.5. CAGE CODE ................................................................................................................................................. 26
8-4.6. ASSEMBLY AND COMPPONET LOCATION........................................................................................... 26
8501-1-F & R, SWITCH UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-8091-1) ............... 27
8501-2-F & -R, SWITCH UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-8091-2).............. 28
9. APPLICATIONS.................................................................................................................................................................... 29
10. ACCESSORIES .................................................................................................................................................................... 29
11. CONTACTING MCE/WEINSCHEL................................................................................................................................... 30
12. MCE / WEINSCHEL WARRANTY .................................................................................................................................. 30
13. ASSEMBLY/WIRING DIAGRAMS
MODEL 8501 ASSEMBLY DRAWING .................................................................................................................193-8091
MODEL 8501 WIRING DIAGRAM ........................................................................................................................193-8034
MODEL 8501 SPECFICATIONS (ICD) ..................................................................................................................089-3557
MCE / Weinschel Corporation
3
Model 8501
IM-357
1. GENERAL INFORMATION:
1-1 PURPOSE: This manual contains setup and operation information for the MCE/Weinschel’s 8501 Series of
SmartStep™ High Power Switch Units. The manual also provides component location, reference designators, part
numbers, and nomenclature to identify all the assemblies and sub-assemblies of the Switch unit.
1-2 SCOPE: This manual is to be used in conjunction with the operation and maintenance of the 8501 Series
SmartStep™ High Power Switch Unit. The manual also provides a description of each assembly; assembly parts list;
block diagrams: and general maintenance procedures to maintain the instrument.
1-3 EQUIPMENT DESCRIPTION: MCE/Weinschel’s 8501 Series SmartStep High Power Switch Units represents a
new concept in switch operation for higher power bench test and subsystem applications. Standard Model 8501
designs house and control either one or two high power switches via front panel controls or standard communications
interfaces including GPIB (IEEE-488) and RS-232/RS-422/RS485. Special configurations may also exist where the
RF section is designed to specific customer requirements, which can contain other coaxial devices such as power
combiners, directional couplers, and filters creating single or multi-channel subsystems. Some 8501 configurations
can contain a separate programmable attenuator channel.
1-4 USING THE 8501: The 8501 Series provides front-panel and computer
control for up to two channels of RF switching, or other functions (Figure 1).
The Model 8501 combines the features of the MCE/Weinschel 8210A Device
Controller with a front panel user interface to form a flexible, easy to use
solution for higher power switching applications. Most 8501 Series are single or
dual channel configurations where RF signal is routed through either the front
or rear mounted switch port connectors labeled 1, C, 2. For specialized
configurations refer to supplemental information in the front of this manual for
details.
Front Panel
Controls
1
C
2
1
C
2
Model Number Index:
Controller
Interface
High Power
Switch
(S1)
High Power
Switch
(S2)
PSU
Figure 1. System Diagram
MCE / Weinschel Corporation
4
Model 8501
IM-357
1-5. UNPACKING AND INSPECTION: Upon unpacking the equipment, retain the shipping container and packing
material for future shipment for recalibration. Perform the following initial inspection:
a. Carefully look at the outside of the shipping container for discoloration, stains, charring, or other signs of
exposure to excessive heat, moisture, or liquid chemicals. Check for any physical damage to the shipping
container such as dents, snags, rips, crushed sections or areas, or similar signs of excessive shock or
careless handling.
b. With the equipment and any accessory package removed from the shipping container, check each item
against the packing list or Items Supplied List. If any items are missing, contact the Weinschel Corporation
Customer Service Department.
c.
Carefully inspect the equipment looking for dents, deep scratches, damaged or loose connector, or any other
d. signs of physical abuse or careless handling. If damage is found, forward an immediate request to the
delivering carrier to perform an inspection and prepare a concealed-damage report. DO NOT destroy any
packing material until it has been examined by an agent of the carrier. Concurrently, report the nature and
extent of damage to Weinschel Corporation, giving equipment model and serial numbers, so that necessary
action can be taken. Under U.S. shipping regulations, damage claims must be collected by the consignee;
DO NOT return the equipment to MCE/Weinschel Corporation until a claim for damages has been
established.
1-6. RESHIPMENT: Use the best packaging materials available to protect the unit during storage or reshipment.
When possible, use the original packing container and cushioning material. If the original packing materials are not
available, use the following procedure:
a. Wrap the storage cases in sturdy paper or plastic;
b. Place the wrapped storage cases in a strong shipping container and place a layer of shock-absorbing material
(3/4 inch minimum thickness) around all sides of the unit to provide a firm cushion and to prevent movement
inside the container.
c.
If shipping the unit for service, attach a tag to indicate:
1.
2.
3.
4.
5.
6.
model and serial numbers
service required
description of malfunction
return address
authorization to conduct repairs
return authorization number
d. Thoroughly seal the shipping container and mark it FRAGILE. Ship to:
MCE/Weinschel Corporation
Attn: Customer Service Department
5305 Spectrum Drive
Frederick, MD 21703-7362
or to an authorized sales representative.
1-7. STORAGE: Storage of the Model 8501 Series SmartStep™ Switch unit is possible for extended periods without
incurring damage to internal circuitry if the 8501 Series is packaged according to the instructions above. The safe
limits for storage environment are as follows:
Temperature:
Humidity:
Altitude:
MCE / Weinschel Corporation
67° to +167 °F (-55° to +75 °C)
less than 95% without condensation
Up to 40,000 feet
5
Model 8501
IM-357
1-8. RELATED MANUALS: The following manuals contain information that may be used in conjunction with this
manual to operate, service, or calibrate this instrument.
Manual
Title
H4-1 and H4-2
Federal Supply Code for Manufacturers Cataloging Handbook
1-9. ELECTROSTATIC DISCHARGE SENSITIVE: The equipment documented in this manual contains certain
Electrostatic Discharge Sensitive (ESDS) components or parts. Therefore, certain procedures/steps are identified by
the use of the symbol .
. This symbol is used in two ways:
CAUTION
All procedures and/or steps identified as must be followed exactly as written and according to
accepted ESDS device handling procedures. Failure to comply WILL RESULT in ESDS damage.
a. When the ESDS symbol is placed between a paragraph number and title
, all of that
paragraph, including all subparagraphs, is considered ESDS device handling procedure.
b. When the ESDS symbol is placed between a procedure/step number and the text
that procedure is considered an ESDS device handling procedure.
, all of
1-10. ABBREVIATIONS AND ACRONYMS: The following list contains abbreviations used throughout this manual.
Abbreviations and acronyms that are not listed conform to MIL-STD-12D.
DUT
ESDS
DIB
TBD
Device Under Test
Electrostatic Discharge Sensitive
Device Interface Bus
To Be Determined
1-11. SAFETY CONSIDERATIONS: The Switch unit and all related documentation must be reviewed for
familiarization with safety markings and procedures before any operation and/or service. Refer to the SAFETY
SUMMARY located at the beginning of this manual for a summary of safety information and procedures. Following
these simple safety precautions will ensure safe operation and service of the Switch unit.
1-12. POWER REQUIREMENTS: MCE / Weinschel supplies a detachable power cable (P/N 068-21) to connect an
100 to 240 Vac power source with a frequency between 50 to 60 HZ to the Switch unit. To minimize shock hazard, the
instrument chassis must be connected to an electrical ground. Using the supplied three-conductor power cable
ensures that the instrument can be firmly connected to the ac power source and electrical ground (safety ground) at a
grounded power outlet. Refer to paragraph 4-2 (Initial Setup) before applying any power to the instrument.
1-13. ENVIRONMENTAL REQUIREMENTS: This instrument performs best within its specifications when operated
within a controlled environment having an ambient temperature of 0°± 50°C, Relative Humidity of up to 95% non
condensing, and a altitude of less than 40,000 feet. Operating beyond these limits can affect the accuracy and
performance of the instrument and damage internal circuitry.
MCE / Weinschel Corporation
6
Model 8501
IM-357
2. SPECIFICATIONS:
2-1. GENERAL SPECIFICATIONS:
Input Power Requirements
ac 100 to 240 Vac, 50/60 Hz, 50 Watts
Environmental
Operating Temperature
Storage Temperature:
Humidity:
Altitude:
IEEE-488 Bus(1)
Connector:
Protocols:
Indicators:
RS-232 Bus(2)
Connector:
9-pin male D
Signals: TXD, RXD, RTS, CTS, DTR, GND
Baud Rates:
2400, 9600, 19200, and 38400
Data Bits:
8
Handshaking:
None, RTS/CTS, XON/XOFF
Parity:
None, Odd, Even
Indicators:
Tx (Transmit) and Rx (Receive)
RS-422 Bus(3)
RS-485 Bus(4)
Connector:
Signals:
Baud Rates:
Data Bits:
Handshaking:
Parity:
Indicators:
RF Characteristics
0 to +50°C
67° to +167 °F (-55° to +75°C)
96%
40,000' (12,192M)
24-pin per IEEE-488.1
per IEEE-488.2
Remote (RMT), Listen (LSN), Talk (TLK), SRQ (SRQ)
9-pin male D
TXD+, TDX-, RXD+, RTX-, RTS+, RTS-, CTS+, CTS-,
and signal GND
2400, 9600, 19200, and 38400
8
None, RTS/CTS, XON/XOFF
None, Odd, Even
Tx (Transmit) and Rx (Receive)
Frequency Range:
DC to 13 GHz
SWR (maximum):
Insertion Loss (dB maximum):
Isolation (dB maximum):
DC to 3
1.25
0.25
70
3 to 5
1.45
0.30
60
5 to 11
1.70
0.50
50
11 to 13
1.70
0.65
50
RF Average Power Handling (CW): 100 W to 3 GHz
50 W to 13 GHz
Hot Switch Cycling:
100K @ 100 Watts CW @ 2 GHz
Port Connectors:
Type N Female
NOTES:
1. GPIB/IEEE-488 model allows user-selectable addresses.
2. RS-232 can be used with standard PC serial port for short and medium distances (up to approximately 50 ft).
3. RS-422: designed for very long distance communications (4000 ft) and & optimized as a single node protocol, typically with one device
connected to a single port.
4. RS-485: designed for very long distance communications (4000 ft) & optimized for multi-drop connections that can used to create a
low cost network.
MCE / Weinschel Corporation
7
Model 8501
IM-357
2-2. PHYSICAL DIMENSIONS:
NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise
3. INSTALLATION:
3-1. RACKMOUNTING: Standard 8501 High Power Switch Units are shipped with four plastic feet mounted to the
bottom cover, this allows the user to place the instrument on any bench or to stack the with other Weinschel
instruments. The Model 8501 can also be rack mounted as a single unit using Rack Mounting Kit (P/N 193-8033-1) or
two Model 8501’s can be mounted together using Rack Mounting Kit (P/N 193-8033-2). Using these kits will allow the
Model 8501 to be mounted in any rack or cabinet that is designed according to EIA RS-310 or MIL-STD-189.
3-2. INITIAL SETUP: The following initial setup procedures should be performed prior to operating the Switch unit.
a. Perform inspection paragraph 1-5 prior to connecting the 8501 Series to any power source.
b. Check that the external power source outputs to the 8501 Series are in accordance with
Section 2, Specifications.
c.
Install the 8501 Series into a cabinet or rack, if desired.
d. Using the supplied power cord connect the 8501 Series to the external power source.
e. Setup the IEEE-488 bus address or RS-232 Communications options for your application using
paragraph 5.
3-3 INPUT/OUTPUT OPTIONS: The following paragraphs provide a description of the connections that can be made
to the 8501 Series Switch unit. Figure 1 shows the location of these connectors and switches.
WARNING
Sufficient power levels are present at the Power Input Assembly to cause personal injury.
Ensure that the instrument power cord is DISCONNECTED before attempting to change
fuses.
MCE / Weinschel Corporation
8
Model 8501
IM-357
Figure 1. Front & Rear Panel Connectors
3-3.1 POWER ENTRY MODULE ASSEMBLY: The Power Entry Module Assembly located on the rear panel contains
a three-prong ac power input connector and a fuse drawer assembly (Figure 1). The Fuse Drawer Assembly
contains the line voltage fuse (Weinschel P/N 052-1-1.5). The Model 8501 uses a T 1.5A, 250 Vac fuse which is 5 x
20 mm in size. Refer to paragraph 6-4 for replacement of the fuse.
The AC Power Connector, located on the left side of XF1 (Figure 1), is a plug-type, prong insert connector with three
conductors for connection of the power cord (P/N 068-21) to the Power Supply Assembly located within the Switch
unit. This connector also grounds the chassis of the Switch unit when the ac power cord is connected to a grounded
wall outlet. If necessary, use a three prong to two-prong adapter and connect the adapter’s ground lead to the outlet
plate retaining screw.
The Power ON/OFF Switch is located on the rear panel and in part of the Power Entry Module Assembly. Placing the
POWER ON/OFF switch in the ON position applies power to the instrument.
CAUTION
When applying an RF signal to the RF INPUT connector, DO NOT exceed the maximum allowable
power level specifications of the Model 8501.
3-3.2. SWITCH PORT CONNECTORS: A typical 8501 Series Switch unit contains six standard type N holes on the
front and rear panel allowing for single or dual switch configurations. Standard Model 8501’s are supplied with Type
N female connectors that can be mounted on the front or rear panel. These connectors provide a input and output port
where various types of RF signals can be applied to the devices internally mounted in the Model 8501 (Connector
location specified by customer when ordering).
MCE / Weinschel Corporation
9
Model 8501
IM-357
4. FRONT PANEL CONTROLS & INDICATORS:
The following paragraphs provide setup and general guidelines for operating the 8501 Series SmartStep
Switch unit and its different bus configurations.
Figure 2. 8501 Series Front Panel
4-1. FRONT PANEL LEDS: The front panel contains four LED indicators that are used to provide communication and
status information. The LED usage is as follows:
LED
RMT
LSN
TLK
SRQ
DESCRIPTION
Remote/Local Status
On : Remote
Off : Local
Listen (also Serial RX)
Flashes when data is received
Talk (also Serial TX)
Flashes when data is transmitted
Service Request
On : Requesting service
Off : Not requesting service
4-2. SWICH CONTROLS & LEDS: Each switch contains a front panel switch labeled S1 or S2. When
using the Model 8501 in the manual mode this switch allows the user to toggle between ports 1 and 2 of the
selected switch. When illuminated the switch LEDs indicate which port is selected.
MCE / Weinschel Corporation
10
Model 8501
IM-357
5. REMOTE OPERATION:
The following paragraphs provide setup and general guidelines for operating the Model 8501 using an
external controller.
5-1. IEEE-488 INTERFACE BUS CONNECTOR: Joining the Model 8501 to a system controller requires the
connection of IEEE-488 control bus cable to the IEEE-488 INTERFACE BUS connector located on the rear panel.
Figure 3 shows the connector’s contact pin numbering scheme and lists the signal designator for signal present at
each contact pin.
PIN No.
SIGNAL LINE
PIN No.
SIGNAL LINE
1
DIO 1
13
DIO 5
2
DIO 2
14
DIO 6
3
DIO 3
15
DIO 7
4
DIO 4
16
DIO 8
5
EOI (24)**
17
REN (24)**
6
DAV
18
GND (6)*
7
NRFD
19
GND (7)*
8
NDAC
20
GND (8)*
9
IFC
21
GND (9)*
10
SRQ
22
GND (10)*
11
ATN
23
GND (11)*
12
SHIELD
24
GND, LOGIC
* GND (N) refer to the signal ground return of the referenced pin.
** Return pin on pin 24.
Figure 3. IEEE-488 Interface Bus Pin Locations
5-2. GPIB ADDRESS/SERIAL COMMUNICATIONS SETTINGS: The GPIB Bus Address and Serial Communications
options are programmed via an internal 8 position DIP switch SW1 which is located on the rear panel. The switch is
shared between the two functions, with SW1-1 controlling the selection. When SW1-1 is OFF, the remaining switches
set the GPIB bus address. Likewise, when SW1-1 is ON, the switches are used to select the various serial options,
including baud rate, parity, and handshaking. Refer to Figure 4 for switch location.
MCE / Weinschel Corporation
11
Model 8501
IM-357
To configure the IEEE-488 bus address or serial communications parameters, select the appropriate switch setting
using the tables located in below (Figure 4).
GPIB
SW1
Serial
Serial Parameters
SP
1
SP
Mode Select
On = Serial parameters
Off = GPIB address
---
2
Echo
Echo Echo Enable
On = Echo received data
Off = No echo
---
3
HndshkSel
Handshaking Select
On = RTS/CTS
Off = XON/XOFF
A4 (16)
4
HndshkEna
Handshake Enable
On = Enabled
Off = Disabled
A3 (8)
5
ParitySel
Parity Select
On = Odd
Off = Even
A2 (4)
6
ParityEna
Parity Enable
On = Enabled
Off = Disabled
A1 (2)
A0 (1)
7
8
BR1
BR2
BaudRate Select (see below)
BaudRate Select
BR1
BR0
RATE
0
0
1
1
0
1
0
1
2400
9600
19200
38400
Note: The GPIB Bus address is selectable from 0 to 30 via the rear
panel dip switch. This switch is factory set to 10.
IEEE-488 Address Truth Table
Switch Number
Decimal Weight
4
16
5
8
6
4
7
2
8
1
Address:
0
1
2
3
4
5
6
7
8
9
10
20
30
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
1
1
0
1
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
Figure 4. Internal Dip Switch
MCE / Weinschel Corporation
12
Model 8501
IM-357
5-3. IEEE-488 (GPIB) Bus Operation
The internal functions of Model 8501 are controlled via an IEEE-488 bus and an external controller. The front
panel LSN and RMT indicators (Figure 2) are used as status indicators for the Model 8501 SmartStep Interface’s
IEEE-488 bus operation. During bus operation a flashing LSN indicates that the Model 8501 is receiving. The RMT
indicator is illuminated when the Model 8501 is in the remote state.
The table below summarizes the IEEE-488.1 interface functions that are implemented by the Model 8501.
Interface Function
Subset
Description
Source Handshake
SH1
Fully implemented
Acceptor
Handshake
AH1
Fully implemented
Talker
T6
All basic Talker functions
No extended addressing
Listener
L4
All basic Listener functions.
No extended addressing
Service Request
SR1
Fully implemented
Remote/Local
RL1
Fully implemented
Parallel Poll
PP0
No Parallel Poll Capability
Device Clear
DC1
Fully implemented
Device Trigger
DT0
No Trigger
Controller
C0
No Controller Functions
Electrical Interface
E2
All tri-state drivers
The GPIB interface of the 8501 is IEEE-488.2 compliant. The 8501 recognizes instructions and data sent via
the GPIB interface in the form of program messages comprised of ASCII characters. A program message is
comprised of a sequence of program message units separated by semicolons and terminated by a line terminator
(LINE END). A line terminator takes the form of an ASCII LF character (0AH), or an EOI signal asserted with the last
data byte, or both. The 8501 program message units may be divided into two syntax groups: commands and queries.
Refer to the section on command syntax for more information.
MCE / Weinschel Corporation
13
Model 8501
IM-357
5-4. Serial Operation: The serial interface (RS232/RS422) provides a means of remotely programming the 8501 via
external computer. The 8501 provides for user-selectable communications parameters via a DIP switch (SW1),
including baud rate, data format, and handshaking method. LED indicators are provided for transmit (TX) and receive
(RX) activity. Selection between RS232/RS422 mode is controlled via an internal 4 position DIP switch SW2, which
also provides for user-selectable 120 ohm terminations for the RS422 receiver lines. The RS422 mode transceivers
are electrically compatible with RS485.
SW2
RS232
RS422
RS485
User
Select
1
OFF
2
OFF
User
Select
3
4
OFF
ON
ON
OFF
Description
CTS Termination
On = Termination
Off = No Termination
RXD Termination
On = Termination
Off = No Termination
RI/RTS Select
Serial Mode
On = RS232
Off = RS422
The data format includes a start bit, eight data bits, and one stop bit (N81). The Baud Rate may be set to
2400, 9600, 19200, or 34800. Parity selections include settings for None, Even, or Odd parity. Handshaking may be
enabled, if desired, and the method may be set to either hardware (RTS/CTS) or software (XON/XOFF). For
interactive terminal use, echoing may be enabled, in which the 8210A will echo all characters received back to the
terminal.
All data and commands are encoded using the ASCII character set. The syntax for commands is the same as
for GPIB operation, and uses the syntax structure defined by IEEE 488.2, with the exception of the command
termination rules. Commands sent to the 8210A may be terminated with either an ASCII CR (0x0D) or ASCII LF
(0x0A) character. By default, all responses from the 8210A are terminated in an ASCII CR/LF sequence (0x0D
followed by 0x0A).
Software handshaking uses the XON/XOFF scheme in which an ASCII DC3 (0x13) character is transmitted
by the receiver to indicate that data transmission should be halted (XOFF), and an ASCII DC1 (0x11) character is
transmitted to indicate that data transmission may continue (XON). Hardware handshaking utilizes the RTS and CTS
lines. When the RTS output signal is asserted true, the unit is ready for data. This signal should be connected to the
external computer's CTS input signal, so that when the receiver is ready, the transmitter may send data. When the
unit is not ready for data, it unasserts the RTS signal, halting data transmission. Likewise, the unit monitors the CTS
input signal during data transmission, halting transmission if the external computer unasserts it's RTS signal. In
addition, the 8501 unasserts the RTS signal while command execution is in progress.
For those systems incorporating local front panel controls, the serial port can lockout local users, providing a Remote/
Local function similar to that of GPIB operation.
MCE / Weinschel Corporation
14
Model 8501
IM-357
5-4.1. RS-232 Operation: The RS-232 Serial port is a 9-pin connector that is compatible with the pin-out of the serial
port on a PC. It allows the use of a null-modem style cable. The pin-out for the connector is show below. For clarity,
the signal names and directions are relative to the 8501.
Pin
1
2
3
4
5
6
7
8
9
Signal Name
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Description
unused
Receive data
Transmit data
Signals DTE is on-line
Ground
unused
Signals DTE is ready
Signals DCE is ready
unused
Direction
--input
output
output
----output
input
---
The DTR signal is asserted when power is on, indicating that the unit is ready.
RS232
9-pin DB9
Pinout
DSR
RTS
CTS
RI
6
7
8
9
1
2
3
4
5
DCD
RxD
TxD
DTR
GND
Null Modem Cable
MCE / Weinschel Corporation
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
15
Model 8501
IM-357
5-4.2. RS-422/485 Operation: The RS-422/RS-485 Serial mode is useful in applications requiring long cable lengths
(up to 5000 ft at 9600 baud), or in electrically noisy environments. All communication parameters available for the
RS232 port are also available under RS-422 operation (baud rate, handshaking, etc). Full Duplex operation is
supported. The RS-422 port utilizes a 9-pin connector. The pin-out for the connector is show below. For clarity, the
signal names and directions are relative to the 8501.
Pin
1
2
3
4
5
6
7
8
9
Signal Name
RxD+
RxDTxDTxD+
GND
CTS+
RTSCTSRTS+
Description
Receive data
Receive data
Transmit data
Transmit data
Ground
Clear To Send
Request To Send
Clear To Send
Request To Send
Direction
input
input
output
output
--input
output
input
output
RS422
9-pin DB9 Pinout
CTS+
RTS CTS RTS+
MCE / Weinschel Corporation
6
7
8
9
1
2
3
4
5
RXD+
RXDTXDTXD+
GND
16
Model 8501
IM-357
5-5. Status Reporting
The 8501 implements the 488.2 Status Reporting Structure, which utilizes the IEEE488.1 status byte with
additional data structures and rules. The Status Byte Register can be read with either a serial poll (IEEE-488
operation only) or the *STB? common query command. The Service Request Enable Register (SRE) allows the user
to select which bits in the Status Byte Register may cause service requests. A bit value of one indicates that the
corresponding event is enabled, while a bit value of zero disables an event. The Service Request Enable Register
may be accessed with the *SRE and *SRE? common commands. The Status Byte Register may be cleared with the
*CLS common command, with the exception of the MAV bit, which is controlled by the operation of the Output Queue.
The SRE Register is set to 0 at power-on, disabling all events.
Status Byte Register/ Service Request Enable Register Formats
D7
D6
RQS
D5
ESB
D4
MAV
D3
D2
EEQ
D1
D0
Bit
Mnemonic
Description
6
RQS
Request Service: This bit, if set, indicates that the device is asserting the SRQ signal.
5
ESB
Event Status Bit: This bit is true when an enabled event in the Event Status Register is
true.
4
MAV
Message Available: This bit is true when there is valid data available in the output queue.
2
EEQ
Error/Event Queue: This bit is true when there is Error/Event data available in the
Error/Event queue.
The Standard Event Status Register is used to report various IEEE 488.2-defined events. The register
contents may be accessed with the *ESR? command. An Event Status Enable Register allows the user to select
which bits in the ESR that will be reflected in the ESB summary message bit of the Status Byte Register. The Event
Status Enable Register may be accessed with the *ESE and *ESE? common commands. The Event Status Register
is cleared by an *ESR? query or *CLS common command. The ESE Register is set to 0 at power-on, disabling all
events.
Standard Event Status Register/ Standard Event Status Enable Register Formats
D7
ON
D6
URQ
D5
CME
D4
EXE
D3
DDE
D2
QYE
D1
RQC
D0
OPC
Bit
Mnemonic
7
PON
Power On: This bit indicates that the device has powered-on
6
URQ
User Request: This event bit indicates that a local control is causing a
User Request
5
CME
Command Error: The parser has detected a syntax error in the current command.
4
EXE
Execution Error: The command could not be properly executed due to
an illegal input range or other inconsistent data.
3
DDE
Device Dependent Error: A command could not properly complete due to some
device specific error
2
QYE
Query Error: This bit indicates that either an attempt has been made to read data
when there was none present, or that data in the Output Queue has been lost
1
RQC
Request Control: The device is requesting control (not implemented)
0
OPC
Operation Complete: This bit is generated in response to an *OPC command. It
indicates that the ITS 2000 has completed all pending operations.
MCE / Weinschel Corporation
Description
17
Model 8501
IM-357
The Status Reporting Registers may be used for serial communications, with certain limitations. The Status
Byte Register can only be read via the *STB? query command, as the comm port does not provide for a serial poll
operation. Also, as data in the Output Queue is sent automatically during serial operation, the MAV message available
bit in the STB serves no purpose.
5-6. GENERAL SYNTAX STRUCTURE: The following paragraphs outline the general syntax and command structure
for the Model 8501. This structure is common to all bus flavors of the Model 8501.
NOTE
In the descriptions that follow, the term whitespace is used to define a sequence
of one or more combinations of ASCII Space (20h), Carriage return (0Dh), or
Tab (09h) characters.
5-6.1 SYNTAX OF QUERIES: A query message unit is made up of a query header ending in an ASCII question mark
character ’?’ (3FH), followed by optional whitespace, and ended by a program message terminator. To form a multiple
query, separate the individual program message units with a semicolon.
Examples :
"ATTN?"
"ASSIGN?"
b. Multiple Query Commands:
"ATTN?; ASSIGN?"
5-6.2 SYNTAX OF COMMANDS: A command message unit is made up of a command header, optionally followed by
an argument and units, and ended by a program message terminator. If multiple commands are made on the same
program line, separate the individual command messages with a semicolon.
Arguments - The 8501 supports a variety of argument types that can be used in program commands.
These types are:
•
Character Program Data
•
Integer Numeric Program Data
•
Real Numeric Program Data
Each data type has its own rules of syntax. The following paragraphs provide the syntax rules for each of the
argument types listed above.
Character Program Data-This data type is comprised of the set of printable ASCII characters (excluding those
used as delimiters). Character program data represents alpha or alphanumeric strings. The use of alpha
characters is case-insensitive. If the first character of the string is not an alpha character, then the string must be
delimited with either the ASCII single-quote (’) or double-quote (") character in order to distinguish the string from
a numeric data type.
Examples:
ATTEN1
ON
"150T"
Integer Numeric Program Data-This data type is used to represent integer, binary, or hexidecimal numeric
information, all of which may be used interchangeably. Integer data is comprised of the numeric digits ’0’-’9’,
binary data is comprised of the digits ’0’ and ’1’ preceded by the characters ’#B’, and hexidecimal data is
comprised of the digits ’0’-’9’, and the letters ’A’-’F’, preceded by the characters ’#H’ or the C language style
prefix ’0x’.
Examples:
MCE / Weinschel Corporation
123 (integer)
#H55 (hex)
0xAA (hex)
#B1010 (binary)
18
Model 8501
IM-357
Real Numeric Program Data-This data type includes decimal numbers containing a sign, decimal point, and/or
an exponent. The format is as follows: [sign]digits[.[digits][E[sign]digits]]
2
2.5
-35.25E+2
Examples:
In the command descriptions that follow, argument types are also described using the following additional
conventions to indicate the relative size of the parameter:
byte
- used to indicate an 8-bit unsigned integer
word
- used to indicate a 16-bit unsigned integer
int8
- 8-bit integer
int16
- 16-bit integer
int32
- 32-bit integer
string
- character data, including the max number of characters allowable.
(i.e., string8 has a max of 8 chars)
5-6.3 OUTPUT DATA FORMAT: Output data from the Model 8501 consists of a series of ASCII digits and message
strings, terminated with an ASCII Line-Feed character (0AH), in response to a program message that contains one or
more query commands. In the case of multiple query commands in the same program message, the data resulting
from each of the individual message units will be separated by an ASCII comma (2CH) character.
5-6.4 NOTATIONAL CONVENTION.
[]
Brackets indicate optional arguments or parameters.
{}
One and only one of the enclosed entries must be selected unless the field is also
surrounded by brackets, in which case it is optional.
...
Ellipses indicate that the preceding argument or parameter may be repeated.
[,...]
The preceding item may be repeated, but each repetition must be separated by a comma.
MCE / Weinschel Corporation
19
Model 8501
IM-357
5-8. 488.2 COMMON COMMANDS
*CLS
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Clears the Status Byte and Event Status Registers.
*CLS
none
This function is used to clear the Status Byte and the Event Status Registers.
none
*CLS
*ESE
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Sets the Event Status Enable Register.
*ESE mask
mask integer bitmask
This function is used to set the Event Status Enable Register to the value specified by mask.
none
*ESE 255
*ESE?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Reads the Event Status Enable Register.
*ESE?
none
This function is used to read the Event Status Enable Register.
mask integer register mask
*ESE? returns the following ’255’
*ESR?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Reads the Event Status Register
*ESR?
none
This function is used to read the Event Status Register. Reading the register clears it.
reg integer register
*ESR? returns the following ’128’
*SRE
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Sets the Status Byte Enable Register
*SRE mask
mask integer bitmask
This function is used to set the Status Byte Enable Register to the value specified by mask.
none
*SRE 255
*SRE?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Reads the Status Byte Enable Register.
*SRE?
none
This function is used to read the Status Byte Enable Register.
mask integer register mask
*SRE? returns the following ’255’
*STB?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Reads the Status Byte Register.
*STB?
none
This function is used to read the Status Byte Register.
reg integer register
*STB? returns the following ’96’
*IDN?
Function:
Syntax:
Argument(s):
Remarks:
Reads the system identification information.
*IDN?
none
This function is used to read the system identification information, which is a string consisting of the
following data: manufacturer, model, serial number, and firmware version.
mfg integer count of devices
*IDN? returns the following ’Weinschel,8501 Series, 123, 1.00A’
Return Value:
Example(s):
MCE / Weinschel Corporation
20
Model 8501
IM-357
*RST
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Performs a device reset.
*RST
none
This function is used to reset the device.
none
*RST
*OPC
Function:
Syntax:
Argument(s):
Remarks:
Operation complete service request.
*OPC
none
This function generates the Operation Complete message (OPC) in the Standard Event Status
Register when all pending device operations have finished.
none
*OPC
Return Value:
Example(s):
*OPC?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
*WAI
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
Operation complete query
*OPC?
none
This function loads a ’1’ into the output queue when the Program Message Unit is executed. Its
primary use is to provide an indication of command completion by including the command as the
last one in a series of commands.
1 integer command completed
SAVE ASSIGN; *OPC? returns a ’1’ when the SAVE ASSIGN command completes.
Wait To Continue
*WAI
none
This function prevents the8501 Series from executing any further commands or queries until there
are no pending operations. The8501 Series executes all commands sequentially, and does not
allow overlapping commands.
none
*WAI
MCE / Weinschel Corporation
21
Model 8501
IM-357
5-9. SWITCH CONTROL COMMANDS
SWITCH
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
SWITCH?
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
SWITCH? GETCAP
Function:
Syntax:
Argument(s):
Remarks:
Return Value:
Example(s):
MCE / Weinschel Corporation
Set switch value
SWITCH name setting (specific form) or
SWITCH setting (non-specific form)
name string10 switch name
setting integer16 desired switch setting
This function sets the outputs of switch name to setting. This command may be used
with both physical and virtual switch devices supporting the SwitchProtocol. The
parameter name must have been previously assigned using either the ASSIGN or
ASSIGN SWITCH command. The non-specific form of this command will set all
switch devices found during the configuration process to the value setting. It may be
used to initialize the system, or as an easy method of programming systems that
contain a single switch. Also, this form allows the value of atten to be specified as -1,
which results in each device being programmed to it’s maximum attenuation value.
none
SWITCH S1 1
Read switch setting
SWITCH? name (specific form) or
SWITCH? (non-specific form)
name string10 switch name
In the specific form, this function reads the setting of switch name. This command
may be used with both physical and virtual switch devices supporting the
SwitchProtocol. The parameter name must have been previously assigned using
either the ASSIGN or ASSIGN SWITCH command. The non-specific form may be
used in systems where there is only a single switch.
setting integer16 setting
SWITCH? S1 returns ’1’
Reads the capability of a switch
SWITCH? GETCAP name
name string10 switch name
This function reads the capability information of switch name. This command may be
used with both physical and virtual switch devices supporting the SwitchProtocol. The
parameter name must have been previously assigned using either the ASSIGN or
ASSIGN SWITCH command. The capability information includes the switch mask
value of the device, and the operational mode.
mask integer16 switch output mask
mode integer operational mode (0=encoded, 1=decoded)
SWITCH? GETCAP S1 returns ’7, 1’
22
Model 8501
IM-357
6. MAINTENANCE:
The following paragraphs provide general inspection and maintenance guidelines for the 8501 Series
SmartStep High Power Switch Units.
6-1. INSPECTION: Perform a visual inspection in conjunction with the maintenance activities schedule when a
malfunction is suspected, or whenever an assembly is removed or replaced.
6-2. PREVENTIVE MAINTENANCE: While the 8501 requires very little preventive maintenance, it should not be
subjected to physical abuse, severe mechanical shock, high humidity, or operating temperatures outside the
specification range. The instrument should be kept free of excessive dirt and dust, since these can interfere with
connector functions and with normal heat dissipation. For cleaning instructions refer to paragraph 6-3 (special
cleaning instructions). The following paragraphs provide the preventive maintenance that is to be performed on the
Unit.
Care should be taken to prevent strain on the interconnecting cables, since damage here may not always be
apparent. Occasionally check the external cables and connectors for signs of cracked insulation and/or bent or worn
pins. Tests show that connectors must be clean for accuracy and stability. This requires an inspection and cleaning of
each connector immediately before use. For connector cleaning instructions, refer to paragraph 6-3. When cleaning
precautions are observed regularly, connectors can maintain their stability for over several thousand connection
cycles. Refer to Appendix A for more information about cables and connectors.
6-3. SPECIAL CLEANING INSTRUCTIONS: The cleaning procedures for 8501 are divided into five general groups:
microwave coaxial cable assemblies, circuit card and modules; machined surfaces and hardware, chassis cleaning,
and connector cleaning.
6-3.1. MICROWAVE COAXIAL CABLE ASSEMBLIES: Appendix A (located at the end of this manual) provides all
the necessary procedures for care, cleaning, and handling of microwave coaxial cable assemblies.
6-3.2 CIRCUIT CARDS AND MODULES: A protective coating is applied to circuit cards for protection from moisture,
arcing, short-circuiting, and abrasion. To remove light dirt from circuit cards and modules proceed as follows:
CAUTION
•
DO NOT use a nylon bristle brush in the solvent as the bristles may dissolve and cause
damage to the circuit card or component.
•
DO NOT use ultrasonic cleaning on parts or assemblies containing electrical or electronic
components.
•
DO NOT bend pins of electrical connectors when using fiber-bristle brush.
a. Briskly brush isopropyl alcohol onto area to be cleaned with fiber-bristle brush.
b. Carefully remove residue with a clean lint-free cloth and repeat step "a" as a rinse.
WARNING
Compressed air used for cleaning and/or drying can create airborne particles that may
enter the eye. Goggles/ faceshields should be worn. DO NOT direct air stream towards
self or other personnel. Pressure should be restricted to a maximum 15 psi to avoid
personal injury.
c.
When parts are thoroughly clean, dry parts using 5 psi of clean moisture free compressed air or
preferably dry nitrogen (pressurized spray will work well).
MCE / Weinschel Corporation
23
Model 8501
IM-357
6-3.3 MACHINED SURFACES AND HARDWARE: To remove light dirt and dust from mechanical parts such as
castings, covers and other hardware proceed as follows:
WARNING
Compressed air used for cleaning and/or drying can create airborne particles that may
enter the eye. Goggles/ faceshields should be worn. DO NOT direct air stream towards
self or other personnel. Pressure should be restricted to a maximum 15 psi to avoid
personal injury.
CAUTION
•
Under no circumstances use a wire brush, steel wool, or abrasive compound. Using
these items will cause extensive damage to the instrument's surface.
•
DO NOT use a nylon bristle brush in solvent as the bristles may dissolve and cause
damage to the circuit card or component.
a. Use 5 psi of clean, moisture-free compressed air or preferably dry nitrogen to blow loose dirt and dust
from surface of item.
b. Briskly brush isopropyl alcohol onto area to be cleaned with a fiber-bristle brush.
c.
Remove residue with lint-free cloth and repeat step "b" as a rinse.
d. When parts are thoroughly clean, dry parts using 5 psi of clean, moisture-free compressed air or
preferably dry nitrogen.
e. Clean smaller mechanical parts or hardware by dipping into a container of isopropyl alcohol. Remove dirt
by brushing with fiber-bristle brush after parts have been immersed for several hours.
f.
Remove parts from isopropyl alcohol and rinse by immersing into a different container of isopropyl
alcohol.
g. When parts are thoroughly cleaned, dry parts using 5 psi of clean, moisture-free compressed air or
preferably dry nitrogen.
6-3.4 CHASSIS CLEANING: Clean chassis using a lint-free cloth moistened with water and mild detergent. For
harder to clean areas, such as inside corners of chassis, use a vacuum cleaner.
6-3.5 CONNECTOR CLEANING: Where small amounts of rust, corrosion, and/or oxide deposits are present on
connectors, clean externally with a soft-bristle brush, aluminum wool, or internally with an acid brush; then wash with
a non-corrosive solvent. MIL-C-83112 is recommended. Exercise care to ensure no metal filing or residue remains
inside the connector and the connector is thoroughly dry. Where rust, corrosion, and/or oxide deposits are present in
large quantities, replace the connector.
MCE / Weinschel Corporation
24
Model 8501
IM-357
6-4. LINE VOLTAGE FUSE REPLACEMENT: The following steps provide procedures to replace the line voltage
Fuse Assembly. This unit accepts a F1.5A, 250 Vac fuse for 115 Vac.
WARNING
Sufficient power levels are present at the Power Input Assembly to cause personal injury.
Ensure that the instrument power cord is DISCONNECTED before attempting to change
fuses.
CAUTION
DO NOT connect or apply power to this instrument until the Power Entry Module
Assembly has been adjusted to the operational line voltage.
a. Disconnect the power cord from the Power Entry Module Assembly.
b. Use a small screwdriver to carefully open the Fuse Drawer.
c. Slide out Fuse Drawer located in the center of the Power Entry Module Assembly.
d. Remove defective fuse and replace with the correct fuse (Refer to applicable parts list for
fuse part number).
e. Snap the Fuse Drawer shut and re-connect ac power cord.
MCE / Weinschel Corporation
25
Model 8501
IM-357
7. REPLACEABLE PARTS LIST:
This section lists and describes the parts located in Standard 8501 Series SmartStep High Power Switch
Units (P/N 193-70XX-X). The Replaceable Parts Lists (RPL) is intended for use in identifying, locating, and
requisitioning assemblies and components for the Model 8501.
7-1 UNDERSTANDING REFERENCE DESIGNATORS: All assemblies and electrical parts are identified by standard
reference designators (resistors R1, for example). Reference designators are used in parts lists and on parts
identification drawings. The title of a parts list or drawing contains the reference designator or the assembly or
subassembly to which it applies. The designators in the parts list, as a prefix, but omitted from the list to make it
easier to locate a specific part. To complete a reference designator in a parts list, precede the designator for the
specific part (DS1, for example) with the designator in the title (A6, for example) to form a complete reference
designator for the part (in this case, A6DS1).
7-2 ORDERING INFORMATION: When ordering parts from Weinschel, please include the following information:
•
MCE / Weinschel part number.
•
Description of the component or part.
•
Model and serial number of the instrument.
•
Assembly number and assembly revision (if any) from the assembly
(this information is on the component side of the PCB).
7-3 DRAWING NUMBER: The MCE / Weinschel part number consists of a basic number with a dash number. The
basic number should cross reference to a drawing number for most of the items. For those items that do not have a
drawing number, the manufacturers part number is provided.
7-4 REPLACEABLE PARTS LIST (RPL): This RPL contains a breakdown of the instrument into its major assemblies
and detailed parts. The following paragraphs describe the contents of each column of the RPL.
7-4.1 REFERENCE DESIGNATOR: This column contains reference designations arranged in alphanumerical
sequence. The letters A thru Z have precedence, followed by numerals 0 thru 9. In addition to the reference
designators that are listed, some mechanical parts are also listed. These items lack reference designators and are
included because they are considered subject to wear and/or breakage, or because they are custom (non-standard)
hardware or parts that might become lost or damaged. This column contains the word N/A for those items or parts not
having a reference designator.
7-4.2 DESCRIPTION: This column contains the nomenclature located in the title block of the engineering drawing by
the designing activity. The noun name is listed first, followed by modifiers and descriptive information to completely
identify the part or assembly.
7-4.3 PART NUMBER: This column contains the Weinschel part number assigned to an assembly, sub-assembly, or
detailed part. This also includes Weinschel numbers for specification control, source control, and altered items
drawings.
7-4.4 VENDOR PART NO.: This column contains manufacturers part numbers for those parts Weinschel purchases,
as off the shelf items and assigns Weinschel part numbers for internal control only. These parts may be ordered
through the manufacturer or Weinschel by the Weinschel part number.
7-4.5 CAGE CODE: This column provides the Commercial and Government Entity (CAGE) code on the same line as
the applicable part number. Codes, names, and addresses of venders with an assigned CAGE are listed in Cataloging
Handbook H4-1 and H4-2. Vendors that have not been assigned CAGE codes by the government are identified by the
word NONE in this column. The names and addresses of these venders can be obtained from Weinschel. Part
numbers that have no CAGE numbers listed are manufactured or altered by Weinschel.
7-4.6 ASSEMBLY AND COMPONENT LOCATION: The assembly/component location and schematic diagrams for
the different 8501 series models are located in rear of this manual by the drawing number. Drawing find numbers
have also been included to help locate components or hardware.
MCE / Weinschel Corporation
26
Model 8501
IM-357
Model 8501-1-F & R High Power Switch Unit Assembly Replaceable Parts List (P/N 193-8091-1):
Find
No.
Part Number
Description
Quantity
Used
Reference
Designator
1
193-8090
2
193-8089
ENCLOSURE, MODIFIED
1
NA
OVERLAY
1
3
193-8092
SUPPORT, SWITCH
NA
1
NA
NA
4
193-8093
CHASSIS
1
5
193-8095-000
ASSY, PCB, DUAL HIGH-POWER SWITCH
1
A3
6
193-9252
ASSY, CABLE, DC TO POWER SUPPLIES
1
W5
7
193-8103
ASSY, CABLE, 15V PSU TO CONTROLLER/
1
W4
CAGE
Code
Vendor
Part Number
HI PWR SWITCH
8
193-8070
ASSY, SWITCH
1
S1
9
193-8023-001
ASSY, PCB, CONTROLLER, W/IEEE CONN
1
A1
10
193-9126-000
ASSY, PCB, ADDRESS SWITCH
1
A5
11
193-9612
CLAMP, ADDRESS CABLE
1
NA
12
193-8005-1
ASSY, CABLE RS232, CONT TO R/P
1
W3
13
001-400-15
PSU SWITCHER, +15V DC, 3.3A
1
A2
60975
GLC50-15
14
001-400-28
PSU SWITCHER, +28 VDC, 1.8 AMP
1
A6
60975
GLC50-28
15
193-9159
ASSY, CABLE, GND
1
W1
5245
PSOSXSS6B
393
16
051-40
FUSE HOLDER, POWER INPUT, W/SWITCH
1
XF1
17
193-9193
ASSY, CABLE, CONTROLLER TO FRONT
1
W6
18
074-761-2
HOLE PLUG 5/8 HOLE, NYLON BLK
9
NA
83330
19
052-1-1/5
FUSE 1.5 AMP, 250V
1
F1
75915
312.01.5
20
062-184-5
CONN SCREW LOCK, FEMALE
2
NA
71468
D20418-2
21
068-39-2
CABLE ASSY, 16 COND RIBBON,
1
W2
D-KEY
A8PPG-1606M-ND
17250
PANEL DISPLAY
6 INCH LG
22
193-8075-1
ASSY, CABLE 28V DC POWER
1
W7
23
068-21
CORD PWR 3-CONDUCTOR
1
NA
16428
1
NA
779
554808-1
DTCH 7.5FT 10A-125V
NEMA5-15P/IEC320-C13
24
062-380-1
SCREW LOCK, HARDWARE
KIT, METRIC, #6-32
UNC-2A EXT THDS
25
090-285
*NAMEPLATE HIGH VOLTAGE
1
NA
26
090-353
* LABEL GROUND
1
NA
NA
27
090-467
*LABEL, POWER INPUT
1
28
090-301-1
* LABEL STD 1.0 X .50 IN
1
NA
30
MS51957-17
SCR PAN HD 4-40 X 1/2 LG
11
NA
31
MS15795-803
WASHER FLAT .125 ID .250 OD
16
NA
32
MS35338-135
WASHER LOCK #4
22
NA
33
MS51957-14
SCR PAN HD 4-40 X 5/16 LG
9
NA
34
MS24693-C3
SCR FLAT HD 4-40 X 5/16 LG 100
6
NA
35
MS35649-244
NUT HEX #4
3
NA
36
MS51957-15
SCR PAN HD 4-40 X 3/8 LG
2
NA
37
MS51859-2
WASHER FLAT #4 NYLON
2
NA
38
MS51957-22
SCR PAN HD 4-40 X 11/4 LG
2
NA
40
074-965
SPACER, ROUND, UNTHREADED .937 LG
2
NA
4729
S337-M07-F09-G
6383
SST2S
X .141 ID, .187 OD
41
074-170-2
CABLE TIE
1
NA
49
193-8094
WIRING DIAGRAM, MODEL 8501
0
NA
50
089-3557
ICD, HI POWER SWITCH, 8501
0
NA
73
090-445
* LABEL, REFERENCE INSTRUCTION
1
NA
1
NA
MANUAL
74
090-354
* LABEL WARNING, HIGH VOLTAGE
Refer to MCE/Weinschel Drawing 193-8091 for parts location.
MCE / Weinschel Corporation
27
Model 8501
IM-357
Model 8501-2-F & R High Power Switch Unit Assembly Replaceable Parts List (P/N 193-8091-2):
Find
No.
Part Number
Description
Quantity
Used
Reference
Designator
1
193-8090
2
193-8089
ENCLOSURE, MODIFIED
1
NA
OVERLAY
1
3
193-8092
SUPPORT, SWITCH
NA
1
NA
NA
4
193-8093
CHASSIS
1
5
193-8095-000
ASSY, PCB, DUAL HIGH-POWER SWITCH
1
A3
6
193-9252
ASSY, CABLE, DC TO POWER SUPPLIES
1
W5
7
193-8103
ASSY, CABLE, 15V PSU TO CONTROLLER/
1
W4
S1, S2
CAGE
Code
Vendor
Part Number
HI PWR SWITCH
8
193-8070
ASSY, SWITCH
2
9
193-8023-001
ASSY, PCB, CONTROLLER, W/IEEE CONN
1
A1
10
193-9126-000
ASSY, PCB, ADDRESS SWITCH
1
A5
11
193-9612
CLAMP, ADDRESS CABLE
1
NA
12
193-8005-1
ASSY, CABLE RS232, CONT TO R/P
1
W3
13
001-400-15
PSU SWITCHER, +15V DC, 3.3A
1
A2
60975
GLC50-15
14
001-400-28
PSU SWITCHER, +28 VDC, 1.8 AMP
1
A6
60975
GLC50-28
15
193-9159
ASSY, CABLE, GND
1
W1
5245
PSOSXSS6B
393
16
051-40
FUSE HOLDER, POWER INPUT, W/SWITCH
1
XF1
17
193-9193
ASSY, CABLE, CONTROLLER TO FRONT
1
W6
18
074-761-2
HOLE PLUG 5/8 HOLE, NYLON BLK
6
NA
83330
19
052-1-1/5
FUSE 1.5 AMP, 250V
1
F1
75915
312.01.5
20
062-184-5
CONN SCREW LOCK, FEMALE
2
NA
71468
D20418-2
21
068-39-2
CABLE ASSY, 16 COND RIBBON,
1
W2
D-KEY
A8PPG-1606M-ND
17250
PANEL DISPLAY
6 INCH LG
22
193-8075-1
ASSY, CABLE 28V DC POWER
1
W7
23
068-21
CORD PWR 3-CONDUCTOR
1
NA
16428
1
NA
779
554808-1
DTCH 7.5FT 10A-125V
NEMA5-15P/IEC320-C13
24
062-380-1
SCREW LOCK, HARDWARE
KIT, METRIC, #6-32
UNC-2A EXT THDS
25
090-285
*NAMEPLATE HIGH VOLTAGE
1
NA
26
090-353
* LABEL GROUND
1
NA
NA
27
090-467
*LABEL, POWER INPUT
1
28
090-301-1
* LABEL STD 1.0 X .50 IN
1
NA
30
MS51957-17
SCR PAN HD 4-40 X 1/2 LG
11
NA
31
MS15795-803
WASHER FLAT .125 ID .250 OD
16
NA
32
MS35338-135
WASHER LOCK #4
24
NA
33
MS51957-14
SCR PAN HD 4-40 X 5/16 LG
9
NA
34
MS24693-C3
SCR FLAT HD 4-40 X 5/16 LG 100
6
NA
35
MS35649-244
NUT HEX #4
3
NA
36
MS51957-15
SCR PAN HD 4-40 X 3/8 LG
2
NA
37
MS51859-2
WASHER FLAT #4 NYLON
2
NA
38
MS51957-22
SCR PAN HD 4-40 X 11/4 LG
4
NA
40
074-965
SPACER, ROUND, UNTHREADED .937 LG
4
NA
4729
S337-M07-F09-G
6383
SST2S
X .141 ID, .187 OD
41
074-170-2
CABLE TIE
1
NA
49
193-8094
WIRING DIAGRAM, MODEL 8501
0
NA
50
089-3557
ICD, HI POWER SWITCH, 8501
0
NA
73
090-445
* LABEL, REFERENCE INSTRUCTION
1
NA
1
NA
MANUAL
74
090-354
* LABEL WARNING, HIGH VOLTAGE
Refer to MCE/Weinschel Drawing 193-8091 for parts location.
MCE / Weinschel Corporation
28
Model 8501
IM-357
9. ACCESSORIES:
Part Number
Description
193-8033-1
Rack Mounting Kit, Single 8501
193-8033-2
Rack Mounting Kit, Dual 8501
10. CONTACTING MCE/WEINSCHEL:
In the event of a malfunction, contact MCE/Weinschel Corporation. An apparent malfunction of an instrument
or component may be diagnosed over the phone by first contacting the Customer Service Department at
MCE/Weinschel Corporation. DO NOT send the instrument or component back to the factory without prior
authorization. When it is necessary to return an item, state the symptoms, catalog and type number of the instrument
or component, and date of original purchase. Also write the Company name and your name and phone number on a
card and tape the card to the item returned. Page provides further information regarding preparation of a unit for
reshipment. Contact Weinschel Corporation Customer Service Department as follows:
Via mail:
MCE / Weinschel Corporation
5305 Spectrum Drive
Frederick, MD 21703-7362
U.S.A.
Via Telefax:
301-846-9116
Via Phone:
Call TOLL FREE 800-638-2048
Toll call # 301-846-9222
Via Website:
www.weinschel.com
Via e-mail:
[email protected]
MCE / Weinschel Corporation
29
Model 8501
IM-357
11. MCE / WEINSCHEL WARRANTY:
PRODUCTS - MCE/Weinschel Corporation warrants each product it manufactures to be free from defects in material
and workmanship under normal use and service anywhere in the world. MCE/Weinschel Corporation’s only obligation
under this Warranty is to repair or replace, at its plant, any product or part thereof that is returned with transportation
charges prepaid to MCE/Weinschel Corporation by the original purchaser within ONE YEAR from the date of
shipment.
The foregoing Warranty does not apply MCE/Weinschel Corporation’s sole opinion to products that have been subject
to improper or inadequate maintenance, unauthorized modifications, misuse, or operation outside the environmental
specifications for the product.
SOFTWARE PRODUCTS- MCE/Weinschel Corporation software products are supplied without representation or
Warranty of any kind. MCE/Weinschel Corporation, therefore, assumes no responsibility and will not accept liability
(consequential or otherwise) arising from the use of program materials, disk, or tape.
The Warranty period is controlled by the Warranty document furnished with each product and begins on the date of
shipment. All Warranty returns must be authorized by MCE/Weinschel Corporation prior to their return.
MCE/Weinschel Corporation’s Quality System Certified to:
© 2002 MCE / Weinschel Corporation
MCE / Weinschel Corporation
30
APPENDIX A
APPENDIX A
CARE AND HANDLING OF MICROWAVE COAXIAL
CABLE ASSEMBLIES
A-1 CARE AND HANDLING OF ASSEMBLIES.
A-3 MAKING INITIAL CONNECTIONS.
To ensure accurate measurements and optimal
performance of Weinschel products, the microwave coaxial
cable assemblies used in system and test setups must be
properly used and maintained. Proper connections, routine
inspection of all cables, and cleaning of the connectors are
extremely important procedures which can prolong the
longevity and accuracy of equipment.
Exercise caution when mating cables. Poor connections
lead to poor system performance. They can also damage not
only the cable assembly, but more significantly, front or rear
panel connectors on the equipment itself which may be more
difficult to repair.
A-2 CABLE INSPECTION.
Routinely check external cables for signs of cracked
insulation, dents, twists, flattening, signs of jacket abrasion, or
other signs of abuse. Wrinkles in the jacket indicate that the
minimum bend radius has been exceeded. Most often, this
occurs near the marker tubes and connectors.
Also inspect the connector interfaces for the following:
•
•
•
•
•
•
•
Bent pins (male).
A-3.2 MATING CONNECTORS. Gent ly mate the
connectors by hand, taking care not to force the coupling nut
at the slightest resistance. It is often possible to feel whether
or not the pins are mated. If the coupling nut is difficult to
turn, either the pins are not mated, the coupling nut is
cross-threaded, or one of the connectors has been damaged by
excess torque.
Bent or missing tines (female).
Worn or chipped plating.
Damaged or displaced dielectric inserts.
Thread damage.
Folded or mushroomed outer interface rims.
Mushroomed pin shoulders (male) or tine ends
(female).
• Score lines on pins and outer interface rims
visible to the unaided eye.
• Recessed or protruding pins.
It is advisable to clean the connectors prior to inspection to
make subtle damage more apparent. If any of the above is
noted, replace the assembly before its further use results in
equipment damage. Also inspect the mating connectors for
similar damage.
Inspect the connector interface for signs of debris. Debris
may be in the form of:
•
•
•
•
A-3.1 ALIGNING CONNECTORS. Align the center
lines of two connectors before actual mating. Male retaining
nuts contain a small amount of necessary play which may make
it possible to mate the threads without the pins being properly
aligned. Pin misalignment can damage pins and dielectric
inserts.
Plating chips or other metal particles.
Dust or dirt.
Oily films.
Other miscellaneous foreign particles.
Never hold a male connector coupling nut
stationary while screwing a female connector into it. This
rotation can erode the plating and damage both the outer
interface rim as well as the pin. If the pins become locked,
serious damage can result to both the equipment and the cable
assembly.
A-4 ENSURING PROPER CONNECTOR TORQUE.
A-4.1 OVERTORQUING. Once connectors have been
properly mated, apply only the proper amount of torque.
Overtorquing damages both connectors involved. Also, a
connector which has been damaged by overtorquing, in turn,
damages every connector to which it is subsequently mated.
It usually leads to poor system performance as well.
Overtorque can cause:
•
•
•
•
•
•
•
•
Bent pins.
Recessed or protruding pins.
Recessed or protruding dielectrics.
Chipped plating.
Damaged coupling threads.
Coupling nut retaining ring damage.
Mushroomed outer interface shells.
Mushroomed pin shoulders.
If signs of debris are present, clean the connector interface
as directed in Paragraph A-6.
A-i
CARE & HANDLING OF COAXIAL CABLES
A-4.2 HEX-NUT TYPES. To mate a connector of the
hex-nut type, always use a torque wrench set to the correct
torque value. Tighten the connector slowly until the wrench
snaps. Tightening too quickly can cause the wrench to exceed
its set limit. Do not snap the wrench more than once as this
also causes overtorque.
A-4.3 KNURLED NUTS. T ighten connectors with
knurled nuts by hand. If this does not provide sufficient
tightness use a hex-nut connector and torque wrench instead.
Never use pliers to tighten a connector. Table A-1
recommends torque specifications for the various types of
connectors.
Table A-1. Recommended Torque Values
Connector
Recommended
Torque
GPC-7 (7mm) w/hex nut
14 in/lbs ± 1 in/lbs
Type N w/hex nut
14 in/lbs ± 1 in/lbs
SMA, 2.92mm, 3.5mm
2.4mm, WPM, WPM-3
WPM-4
7.5 in/lbs ± 0.5 in/lbs
Type N & TNC (knurled)
Hand-tight
BNC (knurled)
Hand-tight
A-5 PROPER CABLE HANDLING.
Never exceed the minimum bend radius specified for a
cable. Guard against tight bends at the end of connector strain
relief tubing, or at the ends of marker tubing where they may
be less noticeable. Although cable bend may seem slight, the
actual radius of the bend at the point of angular departure may
be far smaller than the acceptable radius.
Never pinch, crush or drop objects on cable assemblies.
Also, do not drag a cable over sharp edges as this will pinch it
and cause it to exceed the minimum bend radius.
Never use a cable assembly to pull a piece of equipment.
Cables and connectors are not designed to support or move
equipment.
A-ii
A-5.1 SECURING CABLES. Use toothed, rubber-lined
"P-clamps" to hold cables in place. If it is necessary to use
tie-wraps, use the widest possible wrap and the lowest setting
on the gun to ensure the minimum pressure on the cable.
A-5.2 STORING CABLES.W he n st oring cables,
minimize cable "set" by coiling them in large diameters (1 or
2 feet). Unroll the cable properly when it is ready to be used;
do not pull the loops out hastily. Similarly, re-roll them when
storing them away again.
A-6 CLEANING CONNECTOR INTERFACES.
Use the following guidelines in cleaning connector
interfaces:
a. Do not use chlorinated solvents including common tap
water. These solvents are extremely penetrating and
sometimes ruin otherwise good devices and assemblies.
b. Moisten a cotton swab with isopropyl alcohol. Roll
the swab on a paper towel to remove excess.
c. Use the moistened cotton swab to wipe away debris.
Do not try to dissolve the debris by overwetting the swab.
d. Repeat the cleaning process using additional swabs as
necessary. If metallic particles are embedded in the
dielectric, use an eyeglass and a sharp pick in an attempt
to dislodge them. Swab again.
e. When satisfied that the interfaces are clean, blow them
dry with dry compressed air, or preferably dry nitrogen
(pressurized spray cans work well). Do not use breath.
f. Clean the mating connectors. These may be the source
of the debris.
">