Anritsu ML2400A Series User manual

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ML2400A SERIES
POWER METER
OPERATION MANUAL
P/N: 10585-00013
REVISION: C
PRINTED: AUGUST 1999
COPYRIGHT 1999 ANRITSU
ANRITSU LTD (EMD)
RUTHERFORD CLOSE
STEVENAGE
HERTS
SG1 2EF

WARRANTY
The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and
workmanship for one year from the date of shipment.
ANRITSU's obligation covers repairing or replacing products which prove to be defective during the
warranty period. Buyers shall prepay transportation charges for equipment returned to ANRITSU for
warranty repairs. Obligation is limited to the original purchaser. ANRITSU is not liable for
consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to ANRITSU connectors that have failed due to normal
wear. Also, the warranty does not apply to defects resulting from improper or inadequate
maintenance by the Buyer, unauthorized modification or misuse, or operation outside of the
environmental specifications of the product. No other warranty is expressed or implied, and the
remedies provided herein are the Buyer's sole and exclusive remedies.
TRADEMARK ACKNOWLEDGMENTS
V Connector and K Connector are registered trademarks of ANRITSUCompany.
HP 436A, HP 437B, HP 438A, Deskjet, and HP 340 Deskjet are registered trademarks of
Hewlett-Packard Company. Adobe Acrobat and Acrobat Reader are trademarks of Adobe Systems
Incorporated.
NOTICE
ANRITSU Company has prepared this manual for use by ANRITSU Company personnel and
customers as a guide for the proper installation, operation and maintenance of ANRITSU Company
equipment and computer programs. The drawings, specifications, and information contained herein
are the property of ANRITSU Company, and any unauthorized use or disclosure of these drawings,
specifications, and information is prohibited; they shall not be reproduced, copied, or used in whole
or in part as the basis for manufacture or sale of the equipment or software programs without the
prior written consent of ANRITSU Company.

Safety Symbols
To prevent the risk of personal injury or loss related to equipment mal-
function, ANRITSU Company uses the following symbols to indicate
safety-related information. For your own safety, please read this infor-
mation carefully BEFOREoperating the equipment.
Symbols used in manuals
DANGERIndicates a very dangerous procedure that could result in serious injury
or death if not performed properly.
WARNINGIndicates a hazardous procedure that could result in serious injury or
death if not performed properly.
CAUTIONIndicates a hazardous procedure or danger that could result in light-to-
severe injury, or loss related to equipment malfunction, if proper pre-
cautions are not taken.
Safety Symbols Used on Equipment and in Manuals
(Some or all of the following five symbols may or may not be used on all ANRITSU equipment. Inaddition,
there may be other labels attached to products that are not shown in the diagrams in this manu al.)
The following safety symbols are used inside or on the equipment near
operation locations to provide information about safety items and op-
eration precautions. Ensure that you clearly understand the meanings
of the symbols and take the necessary precautions BEFOREoperating
the equipment.
This symbol indicates a prohibited operation. The prohibited operation
is indicated symbolically in or near the barred circle.
This symbol indicates a compulsory safety precaution. The required op-
eration is indicated symbolically in or near the circle.
This symbol indicates warning or caution. The contents are indicated
symbolically in or near the triangle.
This symbol indicates a note. The contents are described in the box.
These symbols indicate that the marked part should be recycled.
ML2400A OMSAFETY- 1

SAFETY-2ML2400A OM
When supplying AC power to this equipment, connect the accessory 3-
pin power cord to a 3-pin grounded power outlet. If a grounded 3-pin
outlet is not available, use a conversion adapter and ground the green
wire, or connect the frame ground on the rear panel of the equipment to
ground. If power is supplied without grounding the equipment, there is
a risk of receiving a severe or fatal electric shock.
WARNING
This equipment cannot be repaired by the operator. DO NOTattempt to
remove the equipment covers or to disassemble internal components.
Only qualified service technicians with a knowledge of electrical fire and
shock hazards should service this equipment. There are high-voltage
parts in this equipment presenting a risk of severe injury or fatal elec-
tric shock to untrained personnel. In addition, there is a risk of damage
to precision components.
WARNING
Repair
For Safety
WARNING
Always refer to the operation manual when working near locations at
which the alert mark, shown on the left, is attached. If the operation,
etc., is performed without heeding the advice in the operation manual,
there is a risk of personal injury. In addition, the equipment perform-
ance may be reduced.
Moreover, this alert mark is sometimes used with other marks and de-
scriptions indicating other dangers.
If this equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
WARNING

Table of Contents
Chapter 1 - General Information
1-1 Scope of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-4 Identification Number . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-5 Power Meter Models, Options, and Accessories . . . . . . . . . . . . . 1-2
1-6 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2 - Installation
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-3 Sensor Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-4 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-5 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . 2-3
2-6 Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-7 Battery Charging, Removal and Replacement. . . . . . . . . . . . . . 2-9
2-8 Storage and Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Chapter 3 - Connections
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-3 Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Chapter 4 - Front Panel Operation
4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3 Power-On Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-4 Sensor Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-5 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-6 Trigger Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4-7 System Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
4-8 Cal/Zero Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
ML2400A OM i

Chapter 5 - Procedures
5-1 Introduction................................5-1
5-2 Power Measurement...........................5-1
5-3 Zeroing the Sensor............................5-1
5-4 Sensor Calibration............................5-2
5-5 Sensor Zero/Cal..............................5-3
5-6 Performance Verification.........................5-4
5-7 Printer Connection............................5-4
5-8 GPIB Remote Operation.........................5-4
5-9 Serial Remote Operation.........................5-5
5-10 RS232 Modem Support.........................5-6
5-11 Profile Operation Mode........................5-11
5-12 Source Sweep Mode..........................5-17
5-13 Power vs. Time Mode..........................5-19
5-14 User Cal Factors............................5-19
5-15 Optimizing Readings..........................5-21
5-16 Operator Maintenance.........................5-25
Chapter 6 - GPIB Operation
6-1 Introduction................................6-1
6-2 Typographic Conventions.........................6-1
6-3 Data I/O Formats.............................6-1
6-4 Query Commands.............................6-4
6-5 GPIB PCCard Setup...........................6-5
6-6 Using 488.1 GPIB.............................6-6
6-7 Using 488.2 GPIB.............................6-7
6-8 Service Request Status (SRQ)......................6-9
6-9 Functional Groups............................6-10
6-10 ML24XXA Native Commands.....................6-12
6-11 GPIB Emulation Modes........................6-86
6-12 ML4803A Emulation Commands...................6-87
6-13 HP 436A Emulation Commands....................6-98
6-14 HP 437B Emulation Commands...................6-103
6-15 HP 438A Emulation Commands...................6-120
6-16 Programming Examples.......................6-131
iiML2400A OM

Appendix A - Specifications
A-1 IntroductionA-1
A-2 System Specifications..........................A-1
A-3 System Defaults.............................A-6
A-4 System Error Messages.........................A-11
Appendix B - GPIB Quick Reference
B-1 IntroductionB-1
B-2 ML24XXA Quick Reference.......................B-1
B-3 ML4803A Quick Reference.......................B-9
B-4 HP 436A Quick Reference.......................B-10
B-5 HP 437B Quick Reference.......................B-11
B-6 HP 438A Quick Reference.......................B-14
B-7 HP-IB Support.............................B-16
Appendix C - Menu Maps
C-1 IntroductionC-1
C-2 Sensor Menu ...............................C-1
C-3 Channel Menu..............................C-6
C-4 Trigger Menu...............................C-8
C-5 System Menu...............................C-9
C-6 Cal/Zero Menu.............................C-15
Index
ML2400A OMiii/iv

Chapter 1
General Information
1-1SCOPE OF THIS
MANUALThis manual provides installation and operation information for the Model ML2400A Series of ANRITSU Power Meters (Figure 1-1).
1-2INTRODUCTIONThis chapter provides information to familiarize the user with the basic
ML2400A Series Power Meter. Included is information about the equip-
ment identification number, models, options, and sensors.
1-3RELATED
MANUALSThis manual is one of a two manual set consisting of this Operation Manual, and the ML2400A/ML2430A Series Maintenance Manual
(Anritsu part number 10585-00003).
These manuals are available onCD ROM as Adobe Acrobat™ (*.pdf)
files. The files can be viewed using Acrobat Reader™, a freeware pro-
gram provided on the CD ROM. For price and availability, contact the
nearest Anritsu Customer Service Center or visit our web site at:
www .global.anritsu.com.
ML2400A OM1-1
Figure 1-1.ML2400A Series Power Meters

1-4IDENTIFICATION
NUMBERThe ML2400A Series ID number is affixed to the rear panel (see Figure 3-2). Please use the complete ID number when ordering parts or corre-
sponding with the Anritsu Customer Service department.
1-5POWER METER
MODELS, OPTIONS, AND
ACCESSORIES
The ML2400A Series Power Meter is available with either one or two
sensor inputs, and is delivered with a 1.5m sensor cable (ML2400A-20)
for each input. Model numbers, options, and accessories are listed be-
low.
Models
Model No.Number of Sensor Channels
ML2407ASingle Channel
ML2408ADual Channel
Options
Model No.Option
ML2400A-01Rack Mount, single unit
ML2400A-03Rack Mount, side-by-side
ML2400A-05Front Bail Handle
(Options -01 thru -05 are mutually exclusive.)
ML2400A-06Rear Panel Mounted Input A
ML2400A-07Rear Panel Mounted Input A & Reference
ML2400A-08Rear Panel Mounted Inputs A, B, & Reference
ML2400A-09Rear Panel Mounted Inputs A & B
(Options -06 thru -09 are mutually exclusive.)
ML2400A-113000 mA-h, NiMH Battery
ML2400A-12Front Panel Cover
(Can not be used with rack mounted units.)
ML2400A-13External Battery Charger
Accessories
Part No.Item
760-206Hard Sided Transit Case
D41310Soft Sided Carry Case with shoulder strap
ML2419ARange Calibrator
B41323Serial Interface Cable
MA2418A50 MHz, 0 dBm Reference Source
1-2 ML2400A OM
IDENTIFICATION NUMBERGENERAL
INFORMATION

1-6SENSORSThe following sensors, sensor options, and sensor accessories are avail-
able for use with the ML2400A Series Power Meters:
Power Sensors(–70 to + 20 dBm)
Model No.Range
MA2469A10 MHz – 14 GHz
(–60 to +20 dBm, nominal bw 1.2 MHz)
MA2472A10 MHz – 18 GHz
MA2473A10 MHz – 32 GHz
MA2474A10 MHz – 40 GHz
MA2475A10 MHz – 50 GHz
Thermal Sensors(–30 to + 20 dBm)
Model No.Range
MA2421A100 KHz to 18 GHz
MA2422A/B10 MHz – 18 GHz
MA2423A/B10 MHz – 32 GHz
MA2424A/B10 MHz – 40 GHz
MA2425A/B10 MHz – 50 GHz
High Accuracy Sensors(–64 to +20 dBm)
Model No.Range
MA2442A10 MHz – 18 GHz
MA2444A10 MHz – 40 GHz
MA2445A10 MHz – 50 GHz
Sensor Options
MA2400A-10Extra Cal Factor Freq., 0.01 – 40 GHz
Sensor Accessories
ML2400A-201.5m Sensor Cable
ML2400A-210.3m Sensor Cable
ML2400A-22 3m Sensor Cable
ML2400A-23 5m Sensor Cable
ML2400A-24 10m Sensor Cable
ML2400A-25 30m Sensor Cable
ML2400A-26 50m Sensor Cable
ML2400A-27 100m Sensor Cable
ML2400A-29Bulkhead Adapter
MA2499BAnritsu Sensor Adapter
MA2497AHP Sensor Adapter
1N75C5W Limiter, 0.01 – 3 GHz , Nm-f , 75W
1N50C5W Limiter, 0.01 – 18 GHz, Nm-f , 50W
1K50A5W Limiter, 0.01 – 20 GHz, Km-f, 50W
1K50B3W Limiter, 0.01 – 26 GHz, Km-f, 50W
42N75-205 Watt Attenuator , Nm-f , 75 Ω
42N50-205 Watt Attenuator , Nm-f , 50 Ω
42N50-3050 Watt Attenuator , Nm-f , 50Ω
42KC-205 Watt Attenuator , Km-f, 50 Ω
ML2400A OM1-3/1-4
GENERAL SENSORS
INFORMATION
NOTE
The use of sensor ca-
bles greater than 10
meters in length is not
recommended when
measuring pulses of
less than 10 ms.

Chapter 2
Installation
2-1 INTRODUCTION This chapter provides information for the initial inspection and preparation
for use of the ML2400A Series Power Meter. Shipping and storage informa-
tion is also included.
2-2 INITIAL
INSPECTION
Inspect the shipping container for damage. If the container or cushioning ma-
terial is damaged, retain until the contents of the shipment have been
checked against the packing list and the instrument has been checked for me-
chanical and electrical operation.
If the power meter is damaged mechanically, notify your local sales represen-
tative or Anritsu Customer Service Center. If either the shipping container is
damaged or the cushioning material shows signs of stress, notify the carrier
as well as Anritsu. Retain the shipping materials for the carrier's inspection.
2-3 SENSOR
HANDLING
The sensors are enclosed in a polycarbonate case to help prevent damage.
The sensor connectors, however, are exposed and are a critical part of the mi-
crowave instrument. Refer to the MA24XXA Series Power Sensor manual
(10585-00004) for detailed information on proper connector care.
2-4 POWER
REQUIREMENTS
The ML2400A Series Power Meter can be operated from either AC line
power, external DC power, or from the optional internal battery. The
ML2400A Series Power Meter is intended as an Installation (Overvoltage)
Category II, Insulation Category I device.
At power-on, the power meter will perform a brief power-on self test (POST).
If a POST error occurs, information and available options will be displayed on
the screen (See Chapter 4, page 4-3). If the POST is successful, the instru-
ment will load the last used configuration, unless Secure mode has been se-
lected (see Chapter 4, page 4-35, or Chapter 6, page 6-70).
AC Line
Power The ML2400A Series Power Meter can operate on
AC input power of 85-264V, 50-440 Hz, 40 VA maxi-
mum. The Power Meter automatically configures it-
self for the voltage applied. The AC line input is
protected by an internal fuse.
ML2400A OM 2-1

DC Power The ML2400A Series Power Meter can also operate
from a nominal external 12-24 VDC input in the ab-
sence of AC line power. DC line power is protected
by a fuse mounted inside the unit, on the main
board. A grounding terminal is provided on the rear
panel to ground the unit during operation from a
DC supply.
Battery
Power The ML2400A Series Power Meter can be operated
using the optional internal battery pack. During
battery operation, an icon will be displayed on
measurement screens indicating the state of charge.
When the remaining capacity reaches less than
10%, the icon will flash, indicating that charging
will soon be required. When running from battery
power, an estimate of typical-use running time
remaining can be viewed using the System menu
(see Chapter 4, Front Panel Operation). Note that,
due to power consumption considerations, GPIB and
serial remote operation are not available when the
power meter is running from the battery.
The AUTO POWER OFF feature is also available
through the System menu, and can be used to
automatically switch the unit to standby after a
specified period of inactivity to save battery power.
The timer can be set for 10 to 240 minutes, and any
key press will restart the timer. This same feature
will automatically switch the unit to standby when
the battery is fully discharged in order to minimize
the risk of over-discharge.
For optimum battery life, store the battery pack
at –20 to +50° C for short periods and –20 to +35° C
for long term storage.
The ML2400A Series Power Meter will operate from
AC or DC main power with this battery removed.
This battery is not used for the retention of nonvola-
tile memory functions. Refer to Section 2-7, Battery
Charging, Removal and Replacement, for further in-
formation.
Fuses The ML2400A Series Power Meter AC and DC input
lines are protected by internally mounted fuses.
These fuses should only be changed by qualified
service personnel. Replace only with fuses of the
same type and rating (AC fuse is 2A, 250V,
slow-blow; DC fuse is 3A, 125V, slow-blow).
2-2 ML2400A OM
POWER REQUIREMENTS INSTALLATION
NOTE
The ML2400A Series Power
Meter uses a high-capacity
Ni-MH battery (option
ML2400A-11). Over-discharge
canresultinapermanentlossof
battery capacity of as much as
20%.Ifthe unitistobestoredfor
anextendedperiod (longerthan
one week), remove the optional
battery pack so as to preclude
over-discharge.

Grounding The ML2400A Series Power Meter must be properly
grounded. Failure to ground the instrument could
be hazardous to operating personnel. The meter is
supplied with a three-conductor power cord. The in-
strument is properly grounded during AC line op-
eration when the plug is connected to a properly
installed three-prong receptacle. A grounding termi-
nal is provided on the rear panel to ground the unit
during operation from a DC supply.
2-5 ENVIRONMENTAL
REQUIREMENTS
The ML2400A Series Power Meter is designed to operate within the tempera-
ture range of 0 to 50° C with a maximum humidity of 90% at 40° C,
non-condensing. Full accuracy is specified at 5 to 35° C.
Although not recommended, operation in temperatures to –20° C
is possible. At these temperatures, however, the liquid crystal display may
exhibit excessively slow response. The soft sided carry case (part number
D41310) and optional front panel cover (option ML2400A-12) can be used to
help retain internally generated heat and may improve response.
2-6 RACK MOUNTING The ML2400A Series Power Meter can be ordered with rack mounting hard-
ware that allows the unit to be mounted into a standard equipment rack.
There are two rack mount option kits available:
qThe ML2400A-01 Rack Mount option allows the installation of a
single ML2400A in either the left or right side rack position.
qThe ML2400A-03 Rack Mount option allows side-by-side mount-
ing of two ML2400A Power Meters.
The Power Meter itself must be ordered from the factory as a rack
mount-ready unit. As such, it will be fitted with rack mount top and bottom
cases. These cases have extra mounting holes so that the rack mount kits can
be installed. Instructions for installing the rack mount kits follow.
ML2400A OM 2-3
INSTALLATION ENVIRONMENTAL REQUIREMENTS

ML2400A-01 Rack
Mount Installation This section describes the assembly procedure for fitting a single ML2400A
Power Meter (PM) unit into an instrument rack. The PM must be fitted with
rack mount top and bottom covers before the rack mount kit can be fitted.
The procedure involves fitting the support bracket to the PM. The PM can
then be loaded and secured in the rack position desired.
The required parts and tools are listed below:
Tools Required: Small Phillips screw driver
Large Phillips screw driver
Small Phillips torque screw driver 10cNm to 120cNm
Assembly drawing “ML2400A/01 RACK MOUNTED
LEFT OR RIGHT OPTION”
Assembly Procedure 1. Confirm the correct tools are available and the parts listed above are present.
Refer to diagram on page 2-5 throughout this procedure.
2. Fit the two handles 783-1055 to front plate 49362 and the front rack bracket
C37376 using 4 screws 900-795.
2-4 ML2400A OM
RACK MOUNTING INSTALLATION
Quantity
(each) Description Anritsu Part Number Max. Torque Setting
2HANDLE, PULL, CHASSIS, PLASTIC, HARDWARE 783-1055
4SPEED NUT 790-319
86-32, SST, WASHER, FLAT 900-345
4M4, 8.00 MM, PHH, SCREW, FLAT HEAD 900-795
4DECORATIVE SCREW 900-821
8M3X8, POS, SST, PATCHLOCK, SCREW, METRIC,
PAN HEAD 905-68 .4lbf.in
[45cN m]
6M3X5, POS, SST, PATCHLOCK, SCREW, METRIC,
PAN HEAD 905-72 .4lbf.in
[45cN m]
6SNAP RIVET, PLASTIC 788-575
1RACK MOUNT, SIDE, BRACKET C37276
1REAR SUPPORT, BRACKET, RACK MOUNT C41449
1RACK MOUNT, SUPPORT, BRACKET D41473
1BRACKET SUPPORT, BASE PANEL 49361
1FRONT FACE PLATE 49362
1POWER METER FITTED WITH RACK MOUNT TOP
AND BOTTOM COVERS ML2400A
Table 2-1 ML2400A-01 Rack Mount Kit Parts List

3. Lay the large support bracket D41473 next to the Power Meter as per the as-
sembly drawing. Note if the PM needs to be mounted on the left hand side of
the rack, simply lay the bracket on the PM,s right side. i.e. a mirror image of
the assembly drawing.
4. Locate the support bracket on the four PM case pillars. Secure with 4 screws
905-68 and 4 washers 900-345. (See max. torque settings page 2-4).
5. Locate the front rack mounting bracket C37276 at the front of the PM on the
other side to the large support bracket with two screws 905-68 and two
washers 900345. (See max. torque settings page 2-4).
6. Locate the rear bracket C41449 at the back of the PM on the other side to the
large support bracket with two screws 905-68 and two washers 900-345. See
maximum torque settings above. Locate the rear bracket C41449 at the back
of the PM on the other side to the large support bracket with two screws
905-68 and two washers 900-345. (See max. torque settings page 2-4).
7. Fit the front plate 49362 with 6 screws 905-72. (See max. torque settings
page 2-4).
8. Position the base panel 49361 as shown in the drawing, and secure with 6
snap rivets 788-575.
9. Fit the four speed nut 790-319 to the rack in the correct place to allow mount-
ing of the PM in the rack.
10. Slide the PM into the rack and secure with 4 decorative screws 900-821.
ML2400A OM 2-5
INSTALLATION RACK MOUNTING
49362
FRONT PLATE
900-795
X4
905-72
X6
SCREW
041473
SUPPORT
BRACKET
49361
BASE PANEL
788-575
X6
SNAP RIVET
PRESS DOWN CENTER
PIN USING A FLAT EDGE
905-68
X8
900-345
X8
C41449
RACKMOUNT
BRACKET
REAR SUPPORT
C37276
RACKMOUNT
SIDE BRACKET
783-1055
HANDLE
X2
NOTE:
FIT COMPLETED
ASSEMBLY TO RACK USING
DECORATIVE SCREW 900-821
X4 AND SPEED NUT 790-319
X4 IN 4 CORNER
POSITIONS AS SHOWN

ML2400A-03Rack
MountInstallation ThissectiondescribestheassemblyprocedureforfittingtwoML2400APower
Meters(oronepowermeterandoneML2419ARangeCalibrator)intoanin-
strumentrack.Theprocedureinvolvesfittingfrontsupportbrackets,two
fronthandles,andtworearsupportbracketstoeachunit.Thetwounitsbe-
comelockedtogetherandcanthenbeloadedandsecuredintherack.
Therequiredpartsandtoolsarelistedbelow:
2-6 ML2400AOM
RACKMOUNTING INSTALLATION
Quantity
(each) Description Anritsu Part Number Max.Torque Setting
2HANDLE,PULL,CHASSIS,PLASTIC,
HARDWARE 783-1055
4SPEEDNUT 790-319
16 WASHER,6-32UNC,OVERSIZE 900-345
4M4,8.00MM,PHH,SCREW,FLATHEAD 900-795
4DECORATIVESCREW 900-821
16 M3X8,POS,SST,PATCHLOCK,SCREW,METRIC,
PANHEAD 905-68 .4lbf.in
[45cNm]
4M3X6,POS,SST,PATCHLOCK,SCREW,METRIC,
FLATHEAD 905-69
4WASHER,M4SPLIT.900-807
2M4X12MM,SCREW,PANHD 900-806
2M3.5X8MM,SCREW,PANHD 905-103
4M4X10MM,SCREW,FLTHD 905-63
1RACKMOUNT,SIDEBRACKET 49415
1RACKMOUNT,CENTRE,FRT,BRACKET 49413
1SPACERPLATE 49439
1RACKMOUNT,CENTER,FRONT,BRACKET C37275
2RACKMOUNT,SIDE,BRACKET C37276
1RACKMOUNT,CENTER,BRACKET C37277
1RACKMOUNT,CENTER,BRACKET C37279
2REARSUPPORT,BRACKET,RACKMOUNT C41449
2POWERMETERFITTEDWITHRACKMOUNT
TOP
Table2-2ML2400A-03RackMountKitPartsList

Tools Required: 1 Small Phillips screw driver
1 Large Phillips screw driver
1 Small Phillips torque screw driver 10cNm to 120cNm.
1 Assembly drawing “ML2400/03 SIDE BY SIDE
OPTION”
Assembly Procedure 1. Confirm the correct tools are available and the parts listed above are present.
Refer to diagram on page 2-8 throughout this procedure.
2. On the two sides of the power meter to be joined together, fit the two rear
brackets 49413, C37279, and two front brackets C37275, C37277 using 8
screws 905-68 and 8 washers 900-345. (See max. torque settings page 2-6).
3. Slide the two PM units together and secure using 4 counter sink screws
905-69.
4. Fit the two handles 783-1055 to the front rack brackets using 4 screws
900-795.
5. Locate the two front rack brackets C37276 and 49415 at the front of each of
the PM’s, one on each side with four screws 905-68 and four washers 900-345.
See max, torque setting above.
6. Locate the two rear rack brackets C41449 at the back of each of the PM’s one
on each side with four screws 905-68 and four washers 900-345. (See max.
torque settings page 2-6).
7. Fit the four speed nuts 790-319 to the rack in the correct place to allow
mounting of the two PM’s in the rack.
8. Slide the instruments into the rack and secure with the four decorative
screws (900-821) provided.
INSTALLATION RACK MOUNTING
ML2400A OM 2-7

The procedure for fitting a ML2400A to a HP34401A Multimeter is as
follows:
1. Fit to the ML2400A Power Meter front brackets C37276, C37275
and rear bracket C41449 using 6 screws 905-68 and 6 washers
900-345. Do not tighten fully at this stage, only enough to allow the
bracket to slide to its maximum position.
2. Fit the center rear bracket 49413 using 2 screws 905-63. (See max.
torque settings page 2-6).
3. Fit to the HP34401A spacer plate 49439 in 2 positions with front
brackets C37277 and 49415 using 4 screws 905-63. (See max. torque
settings page 2-6).
4. Offer up the HP34401A to the ML2400A unit ensuring the front
bracket fixing holes ofboth units are in line. Slide the center rear
bracket 49413 forward till it makes contact with the rear face of the
HP34401A.
5. Gently remove the HP34401A unit and tighten the 49413 bracket
fixings in its new position. (See max. torque settings page 2-6).
2-8 ML2400A OM
RACK MOUNTING INSTALLATION
NOTE:
FIT COMPLETED
ASSEMBLY TO RACK USING
DECORATIVE SCREW 900-821
X4 AND SPEED NUT 790-319
X4 IN 4 CORNER
POSITIONS AS SHOWN
905-63
X2
49415
RACKMOUNT SIDE
BRACKET (MULTI-FIT).
USE THIS BRACKET
WHEN FITTING A
HP34401A
900-795
X4
905-68
X16
900-345
X16 C37279
RACKMOUNT BRACKET
CENTER INNER REAR
49413
RACKMOUNT BRACKET
CENTER INNER REAR
900-807 X2
900-806 X2
USE THESE FIXINGS WHEN FITTING
A MF2412A COUNTER TO A ML2430A
POWER METER
900-103 X2
900-807 X2
USE THESE FIXINGS WHEN FITTING
A HP34401A MULTIMETER TO A
ML2430A POWER METER
C41449
RACKMOUNT BRACKET
REAR SUPPORT X2
USE THESE BRACKETS WHEN
FITTING A ML2430A TO ANOTHER
ML2430A POWER METER
C37276
RACKMOUNT
SIDE BRACKET
783-1055
HANDLE
X2
49439 X2
SPACER PLATE
USE ON A HP34401A ONLY,
IN 2 POSITIONS WHEN
FITTING TO A ML2430A OR
MF2412A. USE ALSO WITH
SIDE BRACKET 49415
C37277
RACKMOUNT
BRACKET CENTER
INNER FRONT
905-69
X4
905-63 X4
USE THESE FIXINGS WHEN FITTING
A HP34401A TO A ML2430A OR
MF2412A
C37275
RACKMOUNT
BRACKET CENTER
FRONT

2-7 BATTERY
CHARGING,
REMOVAL AND
REPLACEMENT
The optional ML2400A Series Power Meter battery is a 12 Volt, 3000
mA-h nickel-metal hydride (Ni-MH) multi-cell pack, located in a com-
partment on the bottom of the housing. The compartment cover is se-
cured by fractional turn fasteners, as shown in Figure 2-1. Rotate the
fasteners approximately ¼-turn counterclockwise to release the cover.
NOTE
The battery is shipped with a partial charge only, and
should be fully charged before use.
The battery can be completely charged in about two hours with the
power meter in standby mode by selecting CHARGE from the System
menu (page 4-31). This selection is available only when the instru-
ment is being powered by AC line power or external DC power greater
than 21 volts. Note that the instrument will shut down during the
charging cycle, and restart automatically when the charging is com-
pleted. A series of 10 beeps signals completion of the charge cycle.
ML2400A OM 2-9
BATTERY CHARGING, REMOVAL AND REPLACEMENT INSTALLATION
ML2400A
BATTERY
BATTERY
COVER
BATTERY
COVER
FASTENERS
OPEN OPEN
Figure 2-1. Model ML2400A Series Battery Compartment
NOTE: Do not lubricate the battery cover fasteners.