Agilent Technologies 87050A Option K24 Manual

Agilent Technologies
87050A Option K24
User’s and Service Guide
Multiport Test Set
Use this manual with the following documents:
PNA Series Network Analyzer On-line Help System and Application Note 1408-12
8719D/20D/22D Network Analyzer User’s Guide, Part Number 08720-90288
8753D Network Analyzer User’s Guide, Part Number 08753-90257
8753E Network Analyzer User’s Guide, Part Number 08753-90367
8719D/20D/22D Network Analyzer Service Guide, Part Number: 08720-90292
8753D Network Analyzer Service Guide, Part Number: 08753-90261
8753E Network Analyzer Service Guide, Part Number: 08753-90374
Manufacturing Part Number: 87050-90022
Printed in USA: November 2009
Supersede: April 2008
© Copyright Agilent Technologies, Inc. 2002, 2007-2009

ii
Warranty Statement
THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT
TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE
MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, AGILENT DISCLAIMS ALL
WARRANTIES, EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. AGILENT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR
PERFORMANCE OF THIS DOCUMENT OR ANY INFORMATION CONTAINED HEREIN.
SHOULD AGILENT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH
WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT
WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL
CONTROL.
DFARS/Restricted Rights Notice
If software is for use in the performance of a U.S. Government prime contract or
subcontract, Software is delivered and licensed as “Commercial computer software” as
defined in DFAR 252.227-7014 (June 1995), or as a “commercial item” as defined in FAR
2.101(a) or as “Restricted computer software” as defined in FAR 52.227-19 (June 1987) or
any equivalent agency regulation or contract clause. Use, duplication or disclosure of
Software is subject to Agilent Technologies’ standard commercial license terms, and
non-DOD Departments and Agencies of the U.S. Government will receive no greater than
Restricted Rights as defined in FAR 52.227-19(c)(1-2) (June 1987). U.S. Government users
will receive no greater than Limited Rights as defined in FAR 52.227-14 (June 1987) or
DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data.

iii
Safety Notes
The following safety notes are used throughout this document. Familiarize yourself with
each of these notes and its meaning before performing any of the procedures in this
document.
WARNING Warning denotes a hazard. It calls attention to a procedure
which, if not correctly performed or adhered to, could result in
injury or loss of life. Do not proceed beyond a warning note
until the indicated conditions are fully understood and met.
CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not
correctly performed or adhered to, could result in damage to or
destruction of the instrument. Do not proceed beyond a caution sign
until the indicated conditions are fully understood and met.
Definitions
•Specifications describe the performance of parameters covered by the product warranty
(temperature –0 to 55 °C, unless otherwise noted.)
•Typical describes additional product performance information that is not covered by the
product warranty. It is performance beyond specification that 80% of the units exhibit
with a 95% confidence level over the temperature range 20 to 30 °C. Typical
performance does not include measurement uncertainty.
•Nominal values indicate expected performance or describe product performance that is
useful in the application of the product, but is not covered by the product warranty.
•Characteristic Performance describes performance parameter that the product is
expected to meet before it leaves the factory, but is not verified in the field and is not
covered by the product warranty. A characteristic includes the same guard bands as a
specification.

iv

Contents
Contents-1
87050A Option K24
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
87050A Option K24 Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Verifying the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Environmental Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Equipment Heating and Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Required Conditions for Accuracy Enhanced Measurement . . . . . . . . . . . . . . . . . . . . . . . 6
Dimensions and Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Front and Rear Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Line Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ports 1–24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Transmission and Reflection Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Ground Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Port Connection Status LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Parallel Port Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Parallel Port Output Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Printer/Test Set Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
GPIB Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Line Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Available Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Setting the Test Set Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Typeface Key Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Computer Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Network Analyzer Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Calibrating the Test System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Making Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Measuring Reflection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Measuring Transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
System Theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
A1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
A2 Front Panel Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
A3 Controller Board (Mother Board) and Switch Driver Board (Daughter Board) . . . . . . 28
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Return Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Assembly Replacement and Post-Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Contents-2
Contents
Connector Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Troubleshooting and Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
General Troubleshooting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Troubleshooting Power Supply Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Troubleshooting the Front Panel Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Troubleshooting the Controller and Switch Driver Boards . . . . . . . . . . . . . . . . . . . . . . . . . .49
Safety and Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Before Applying Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Connector Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Statement of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
General Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Battery Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Compliance with German Noise Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
EMC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Electrostatic Discharge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Agilent Support, Services, and Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Service and Support Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Contacting Agilent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Shipping Your Analyzer to Agilent for Service or Repair . . . . . . . . . . . . . . . . . . . . . . . . . . .57

User’s and Service Guide 1
87050A Option K24

2User’s and Service Guide
87050A Option K24 Description
Description
The Agilent 87050A Option K24 Multiport Mechanical Switching Test Set is designed for
use with 50 Ωnetwork analyzers such as the Agilent PNA E8362B, PNA-L N5230A,
8719D/E, 8720D/E, 8722D/E and 8753D/E.
The Test Set provides the ability to make single connection, multiple measurements of
multiport devices with up to 24 ports, such as distribution amplifiers, taps, switches and
couplers. Throughput is increased by reducing the number of device reconnects the
operator must perform. Switching is performed with mechanical switches.
The test set can be controlled by using an external GPIB controller, or parallel control
NOTE This User’s and Service Guide documents the use of the test set with an
Agilent 8720D or the PNA E8362B.
87050A Option K24 Options
UK6
Option UK6 provides a commercial calibration certificate including actual test data. Data
includes test results of 95 tests including reflection, transmission, and isolation from all
test ports.
Rack Ear Mounts
Option 908 (5062-3974) provides rack mounts that make it quick and easy to install or
remove the test set from a mainframe.
For further information on these options please contact Agilent Technologies. Refer
to "Contacting Agilent" on page 57.

User’s and Service Guide 3
87050A Option K24 Verifying the Shipment
Verifying the Shipment
After the test set has been unpacked, keep the original packaging materials so they can be
used if you need to transport the instrument.Inspect the test set and all accessories for any
signs of damage that may have occurred during shipment. If your test set or any
accessories appear to be damaged or missing refer to "Contacting Agilent" on page 57.
Table 1 87050A Option K24 Accessories Supplied
Description Agilent Part Number Quantity
Power Cord See Figure 7 on page 14 1
Adapter, 3.5 mm to APC-7 1250-1747 2
RF Cable (SMA to SMA) 5062-6682 2
Front Handle Kit 5063-9228 1
Rack Mount Kit 5063-9235 1
Parallel Port Interface Cable 8120-6818 1
RF Cable (Connect Option K24
trans and refl ports to the analyzer)
08720-20245 2
3.5 mm Connector 85052-60012 2
User’s and Service Guide 87050-90022 1

4User’s and Service Guide
87050A Option K24 General Specifications
General Specifications
Table 2 Agilent 87050A Option K24 Specifications
Parameter Specification
Frequency Range 50 MHz to 20 GHz
Isolation
0.50 GHz to 1.3 GHz ≥ 85 dB
1.3 GHz to 3.0 GHz ≥ 100 dB
3.0 GHz to 6.0 GHz ≥ 95 dB
Return Loss
0.50 GHz to 1.3 GHz ≥ 24 dB
1.3 GHz to 3.0 GHz ≥ 20 dB
3.0 GHz to 6.0 GHz ≥ 14 dB
6.0 GHz to 12.4 GHz ≥ 12 dB
12.4 GHz to 20 GHz ≥ 8 dB
Insertion Loss
0.5 GHz to 6.0 GHz ≤ 2.5 dB
6.0 GHz to 12.4 GHz ≤ 3.5 dB
12.4 GHz to 20 GHz ≤ 4.5 dB
Phase Deviation
Reflection Port to Ports 1–24
(0.5 GHz to 6.0 GHz)
± 10°
Transmission Port to Ports 1–24
(0.5 GHz to 6.0 GHz)
± 10°
Reflection Port to Ports 1–24
(6.0 GHz to 20 GHz)
± 35°
Transmission Port to Ports 1–24
(6.0 GHz to 20 GHz)
± 35°
Input Power Damage Level > 1 Watt (RF +dc)

User’s and Service Guide 5
87050A Option K24 General Specifications
Power Requirements
NOTE Refer to your network analyzer documentation for specifications and power
requirements.
Verify that the required ac power is available at all necessary locations before installing
the Test Set to the PNA.
• Air conditioning equipment (or other motor–operated equipment) should not be placed
on the same ac line that powers the Test Set and PNA.
• The line power module on your test set is an autoranging input.
• Ensure that the available ac power source meets the following requirements:
— 100/120/220/240 Vac
— 50/60 Hz
—40Watts
Specifications for the 87050A Mechanical Switching Multiport Test Set are characteristics
for the system performance of the PNA and test set. Actual performance of the system is
based on the customers PNA that is used with the test set.
WARNING This is a Safety Class I product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall be
inserted only into a socket outlet provided with a protective earth
contact. Any interruption of the protective conductor, inside or
outside the instrument, is likely to make the instrument dangerous.
Intentional interruption is prohibited.
CAUTION This product has an autoranging line voltage input. Be sure the supply
voltage is within the specified range. If the ac line voltage does not fall within
these ranges, an autotransformer that provides third wire continuity to earth
ground should be used.

6User’s and Service Guide
87050A Option K24 General Specifications
Environmental Requirements
Operating Environment
Indoor use only
Operating Temperature: 0 to 55 °C (32 °F to 104 °F)
Storage Temperature: -40 °C to +70 °C (–40 °F to +158 °F)
Altitude: 10,000 feet (3,000 meters)
Enclosure Protection IP 2 0
Environmental Tests
The 87050A Option K24 complies with all applicable safety and regulatory requirements
for the intended location of use and have been evaluated to assure that they are consistent
with Agilent quality and reliability goals.
Equipment Heating and Cooling
If necessary, install air conditioning and heating to maintain the ambient temperature
within the appropriate range. Air conditioning capacity must be consistent with the power
ratings given on Page 5.
Required Conditions for Accuracy Enhanced Measurement
Accuracy–enhanced (error–corrected) measurements require the ambient temperature of
the PNA and Test Set to be maintained within ± 1 °C of the ambient temperature at
calibration.
CAUTION This product is designed for use in Installation Category II, and Pollution
Degree 2.

User’s and Service Guide 7
87050A Option K24 General Specifications
Dimensions and Space Requirements
Standard installation of the 87050A Option K24 and PNA includes configuration and
installation on a customer provided lab bench or table top of adequate size and strength.
Figure 1 Agilent 87050A Option K24 Physical Dimensions
Table 3 Instrument Dimensions
Model Weight Height Width Depth
E8362B 29 kg (64 lb) 26.7 cm
(10.5 in)
42.5 cm
(16.7 in)
42.6 cm
(16.8 in)
N 5 2 3 0 A 24.9 kg
(55 lb, ±0.5 lb)
26.7 cm
(10.5 in)
42.5 cm
(16.7 in)
42.6 cm
(16.8 in)
87050A Opt K24 9 kg (19.8 lb) 17.8 cm
(7 in)
42.5 cm
(16.7 in)
50 cm
(19.7 in)

8User’s and Service Guide
87050A Option K24 General Specifications
Ventilation Requirements
ESD (electrostatic discharge) must be eliminated by use of static-safe work procedures and
an anti-static bench mat.Refer to “Electrostatic Discharge Protection” on page 56.
The 87050A Option K24 and the PNA are listed in “Environmental Requirements” are
listed on Page 6. Note that these requirements are the same as those of the E8362B and
N5230A PNA-L. The E8362B and N5230A PNA-L provides front panel access to the source
outputs, receiver inputs and couplers for use with the multiport test sets.
CAUTION Ventilation Requirements: When installing the instrument in a cabinet, the
convection into and out of the instrument must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the instrument by 4 °C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
forced convection must be used.
Figure 2 Ventilation Clearance Requirements
CAUTION If the total power dissipated in the cabinet is greater than 800 watts, forced
convection must be used.

User’s and Service Guide 9
87050A Option K24 Front and Rear Panel Features
Front and Rear Panel Features
This chapter contains information on the ports and switches found on the front and rear
panels of the test set.
Figure 3 Front Panel
Line Power Switch
The Test Set line power switch is located at the bottom left corner of the front panel. See
Figure 3. The line power switch turns the power to the test set on or off.
The front panel line switch disconnects the mains circuits from the mains supply after the
EMC filters and before other parts of the instrument.
Ports 1–24
Ports 1 through 24 are 50 Ω, 3.5 mm connectors that are used to connect to the device
under test.
CAUTION Do not input more than 1 watt, RF and DC combined, to these ports or
damage to the internal RF switches or the analyzer may occur.
Reflection 50 ΩTransmission 50 Ω
Ground Connector
Port Connection
Status LCD Test Ports 1–24
Line Power Switch

10 User’s and Service Guide
87050A Option K24 Front and Rear Panel Features
Figure 4 Physical Characteristics of the 3.5 mm Connector
Transmission and Reflection Ports
The Transmission and Reflection Ports are female 3.5 mm 50 Ωconnectors. A 50 Ωcable
connects directly to the Port 1/Port 2 or Reflection/Transmission port of the network
analyzer using the cable (08720-20245) that was shipped with your Test Set.
CAUTION Refer to your analyzer documentation for damage limits to the RF OUT port.
Verify that your test setup will not cause those limits to be exceeded.
Ground Connector
The Ground connector provides a convenient front panel ground connection for a standard
banana plug.
Port Connection Status LCD
The Port Connection Status LCD provides visual feedback of which port(s) are connected to
the Transmission and Reflection ports of the test set. When the LCD displays a path
connection, all other corresponding test ports are internally terminated in 50 Ω.

User’s and Service Guide 11
87050A Option K24 Front and Rear Panel Features
Figure 5 Rear Panel
Parallel Port Input Connector
This input is connected to the network analyzer. The analyzer provides control signals that
drive the switches inside the test set. In pass-through mode, it also accepts signals
required to drive a printer.
Parallel Port Output Connector
The output from this connector is used either to control another test set, or to control a
printer, depending upon how the Printer/Test Set switch is set.
Printer/Test Set Switch
This switch determines the function of the Parallel Port Output connector. When switched
to Printer, the Parallel Port Output will pass through printer driver signals. When
switched to Test Set, an additional test set can be controlled from the Parallel Port Output
connector.
GPIB Connector
This connector allows the test set to be connected directly to a controller, as shown in
Figure 5.
Parallel Port Input
Parallel Port Output
Printer/Test Set
Switch
GPIB connector
Address Switch
Line Module

12 User’s and Service Guide
87050A Option K24 Front and Rear Panel Features
Address Switch
The address switch sets the GPIB or parallel address of the test set. See “Setting the Test
Set Address Switch” on page 16 for information.
Line Module
The line fuse and a spare reside within the line module. Figure 6 illustrates where the
fuses are and how to access them.
Figure 6 Line Module
Available Fuse
• Fuse (F 3 A/250 V, part number 2110-0780) UL listed and CSA certified.

User’s and Service Guide 13
87050A Option K24 Power Cables
Power Cables
The line power cable is supplied in one of several configurations, depending on the
destination of the original shipment.
Each instrument is equipped with a three-wire power cable. When connected to an
appropriate ac power receptacle, this cable grounds the instrument chassis. The type of
power cable shipped with each instrument depends on the country of destination. See
Figure 7 on page 14 for the part numbers of these power cables. Cables are available in
different lengths. See "Contacting Agilent" on page 57 for descriptions and part numbers
of cables other than those described in Figure 7.
CAUTION Always use the three-prong ac power cord supplied with this product. Failure
to ensure adequate grounding by not using this cord may cause damage to the
product.
WARNING This is a Safety Class I product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only
be inserted in a socket outlet provided with a protective earth
contact. Any interruption of the protective conductor, inside or
outside the instrument, is likely to make the instrument dangerous.
Intentional interruption is prohibited.

14 User’s and Service Guide
87050A Option K24 Power Cables
Figure 7 Power Cable and Line (Mains) Plug Part Numbers
LN
E
250V
250V
LN
E
250V
E
LN
NL
E
250V
125V
EE
NNLL
EE
NNLL
220V
230V
250V
E
LN
NL
E
N
E
L
125V
EE
NNLL
EE
NNLL
Plug Type
a
Cable
Part
Number Plug
Description
b
8120-8705 Straight
BS 1363A 229 (90) Mint Gray
Length
cm (in.) Cable Color For Use
in Country
90
90
Option 900
United Kingdom, Hong
Kong, Cyprus, Nigeria,
Singapore, Zimbabwe
Mint Gray
229 (90)
8120-8709
8120-1369
8120-0696
Straight
AS 3112 Option 901
Argentina, Australia,
New Zealand, Mainland
China
210 (79)
200 (78)
Gray
Gray
8120-1378
8120-1521
8120-4753
8120-4754
Straight
NEMA 5-15P
Straight
NEMA 5-15P
90
90
203 (80)
203 (80)
Jade Gray
Jade Gray
Gray
Gray
229 (90)
229 (90)
Option 903
United States, Canada,
Brazil, Colombia,
Mexico,Philippines,
Saudi Arabia, Taiwan
Option 918
Japan
Option 902
Continental Europe,
Central African Republic,
United Arab Republic
Mint Gray
Mint Gray
200 (78)
200 (78)
Straight
CEE 7/VII
90
8120-1689
8120-1692
8120-2104
8120-2296
Straight
SEV Type 12
90
200 (78)
200 (78)
200 (78)
200 (78)
200 (78)
200 (78)
200 (78)
200 (78)
8120-2956
8120-2957
8120-4211
8120-4600
8120-5182
8120-5181
Straight
SR 107-2-D
90
Straight
IEC 83-B1
Straight
SI 32
90
90
Gray
Gray
Gray
Gray
Option 906
Switzerland
Option 912
Denmark
Option 917
South Africa, India
Option 919
Israel
Mint Gray
Mint Gray
Jade Gray
Jade Gray
a. E =earth ground, L = line, and N = neutral.
b. Plug identifier numbers describe the plug only. The Agilent Technologies part number is for the complete cable assembly.