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FM5004
User Manual
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ETS-Lindgren FM5004 User Manual

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Archived 10/19/10
FM5004
Field Monitor
User Manual
ETS-Lindgren L.P. reserves the right to make changes to any product described
Archived 10/19/10
© Copyright 1994–2009 by ETS-Lindgren L.P. All Rights Reserved. No part of this document may be copied by any means without written permission from ETS-Lindgren L.P.
Trademarks used in this document: The ETS-Lindgren logo is a trademark of ETS-Lindgren L.P.
Revision Record | FM5004 MANUAL | Part #H-600069, Rev. B
Revision Description Date
Initial Release January, 1994
A Updates / edits April, 2005
B Rebrand April, 2009
ii |
Table of Contents
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Notes, Cautions, and Warnings ............................................... ix
General Safety Considerations ................................................ x
1.0 Introduction ........................................................................ 11
Theory of Operation ..................................................................................... 12
System Theory ..................................................................................... 12
System Block Diagram ................................................................ 13
Receiver Theory .................................................................................. 14
Receiver Block Diagram .............................................................. 15
Zeroing ................................................................................................. 16
ETS-Lindgren Product Information Bulletin ................................................. 16
2.0 Maintenance ....................................................................... 17
Maintenance Recommendations ................................................................. 17
Weekly ................................................................................................. 17
Monthly ................................................................................................ 17
Annual Calibration ....................................................................................... 18
Maintenance of Fiber Optics ........................................................................ 18
Service Procedures ..................................................................................... 18
3.0 Before You Begin ............................................................... 19
Verify FM5004 Operation ............................................................................. 19
Verify Optional Connections ........................................................................ 20
Remote Operation ............................................................................... 20
Analog Output ...................................................................................... 21
4.0 Quick Start .......................................................................... 23
5.0 Front Panel Controls and Indicators ................................ 25
Power Switch ............................................................................................... 25
Input Selection Matrix .................................................................................. 26
Base Mode Switches ........................................................................... 26
Channel Select Switches ..................................................................... 27
Channel Mode Indicators ..................................................................... 28
System Status .............................................................................................. 29
Range (Alt Disp) .................................................................................. 29
Battery (Temp) ..................................................................................... 30
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Local (Reset) ....................................................................................... 31
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(Shift) ................................................................................................... 31
Display ......................................................................................................... 31
Menu Select ................................................................................................. 32
Using the Menu Keys ........................................................................... 32
Navigating the Menu System ............................................................... 32
Changing Settings ............................................................................... 33
Exiting the Menu System ..................................................................... 33
6.0 Menu System ...................................................................... 35
MAIN MENU ................................................................................................ 35
DISPLAY SETUP ......................................................................................... 36
DISPLAY FORMAT / ALT DISPLAY FORMAT ................................... 37
4-PROBE ..................................................................................... 38
2-LINE ......................................................................................... 38
3-AXIS ......................................................................................... 40
DISPLAY UPDATE RATE ................................................................... 41
LCD CONTRAST ................................................................................. 41
LCD BRIGHTNESS ............................................................................. 41
ANALOG OUT SETUP ................................................................................ 42
FULL SCALE RANGE ......................................................................... 43
MIN/MAX/AVG ..................................................................................... 44
FILTER SIZE ....................................................................................... 45
LOG SCALE OUTPUT ......................................................................... 45
REMOTE OPER SETUP ............................................................................. 46
ALARM SETUP ........................................................................................... 47
4-PROBE / 3-AXIS ALARM SETUP .................................................... 48
LINE 1 ALARM / LINE 2 ALARM ......................................................... 49
TEMP ALARM SETUP ........................................................................ 50
SYSTEM ALARM ................................................................................. 52
SETUP SAVE/RECALL ............................................................................... 53
ZERO PROBES ........................................................................................... 54
MAINTENANCE ........................................................................................... 54
LAST ERRORS ................................................................................... 54
SYSTEM STATUS ............................................................................... 55
SAMPLES/SEC ................................................................................... 55
KEY CLICK .......................................................................................... 55
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ALARM SILENCE ................................................................................ 55
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7.0 Remote Operation .............................................................. 57
Command Set Format ................................................................................. 57
IEEE-488 ..................................................................................................... 57
IEEE-488 Requirements ...................................................................... 57
IEEE-488 (GPIB) Communications...................................................... 58
RS-232 ......................................................................................................... 58
RS-232 Communications ..................................................................... 58
RS-232 Settings ................................................................................... 59
RS-232 Pin Detail ................................................................................ 59
Remote Commands ..................................................................................... 60
Alarm Latch .......................................................................................... 62
Alarm Silence ....................................................................................... 63
Alternate Display Format ..................................................................... 64
Alarm Lower Enable ............................................................................ 66
Alarm Lower Value .............................................................................. 67
Alarm Upper Enable ............................................................................ 68
Alarm Upper Value .............................................................................. 69
Analog Output Mode ............................................................................ 70
Analog Output Range .......................................................................... 71
Baud Rate ............................................................................................ 72
Buss Voltage ........................................................................................ 73
Change Range ..................................................................................... 74
Display Format ..................................................................................... 75
Display Update Rate ............................................................................ 77
Error Register Query ............................................................................ 78
Filter Size ............................................................................................. 79
GPIB Address ...................................................................................... 80
Key Click .............................................................................................. 80
Last Errors ........................................................................................... 81
LCD Brightness .................................................................................... 81
LCD Contrast ....................................................................................... 82
LED Setup ........................................................................................... 83
Local Mode .......................................................................................... 84
Log Scale ............................................................................................. 84
Read Display ....................................................................................... 85
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Read Battery Voltages ......................................................................... 86
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Read Temperatures ............................................................................. 87
Remote Mode ...................................................................................... 88
Sample Rate ........................................................................................ 89
Setup Recall ........................................................................................ 90
Setup Save .......................................................................................... 91
System Alarm, Hard Probe Failure ...................................................... 92
System Alarm, Momentary Probe Failure ............................................ 93
Software Date ...................................................................................... 93
Software Revision ................................................................................ 94
Verbose Mode ..................................................................................... 94
Zero Probes ......................................................................................... 95
System Level Commands for IEEE-488.2 Compliance ............................... 96
Clear Status ......................................................................................... 96
Define Device Trigger .......................................................................... 97
Event Status Enable ............................................................................ 98
Error Status Register Query ................................................................ 98
Identification Query .............................................................................. 99
Operation Complete ........................................................................... 100
Reset ................................................................................................. 101
Self-Test ............................................................................................ 101
Service Request Enable .................................................................... 102
Status Byte Query .............................................................................. 103
Trigger ............................................................................................... 104
8.0 Troubleshooting and Error Handling ............................. 105
Troubleshooting ......................................................................................... 105
Error Handling ............................................................................................ 106
Error Code A: Alarm L1 Up Line 1 Upper Alarm ................................ 106
Error Code B: Alarm L1 Line 1 Lower Alarm ..................................... 106
Error Code C: Alarm L2 Up—Line 2 Upper Alarm ............................. 106
Error Code D: Alarm L2 Lo—Line 2 Lower Alarm ............................. 106
Error Code E: Probe Err Probe Returned Error ................................. 106
Error Code F: Batt Fail At Fail Level .................................................. 107
Error Code G: Double Flt–Receive–Probe Reset .............................. 107
Error Code H: Probe Fail–Probe Did Not Recover ............................ 107
Error Code L: Temp Lower–Temp Under Lower Limits ..................... 107
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Error Code N: Non Support–Probe Not Supported ........................... 107
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Error Code O: Over Range Error ....................................................... 107
Error Code P: Process Err No Time to Process Data ........................ 107
Error Code Q: Sample/s–1 Process Err–Rate Too High ................... 108
Error Code R: Receive Err Data Not Rec From Probe ...................... 108
Error Code S: Send Error Probe Not Ready to Send ........................ 108
Error Code U: Temp Upper Temp Over Upper Limits ....................... 108
Error Code W: Batt Warn At Warning Level ...................................... 108
Error Code Y: Alarm Upper 4/3 Display Alarm .................................. 108
Error Code Z: Alarm Lower 4/3 Display Alarm................................... 108
Appendix A: Warranty ........................................................... 109
Appendix B: Summary List of Commands .......................... 111
IEEE-488.2 Commands ............................................................................. 111
No Parameter Commands ......................................................................... 112
One Parameter Commands ....................................................................... 113
Two Parameter Commands ....................................................................... 114
Three Parameter Commands .................................................................... 114
Appendix C: EC Declaration of Conformity ........................ 115
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viii |

Notes, Cautions, and Warnings

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Note: Denotes helpful information intended to
See the ETS-Lindgren Product Information Bulletin for safety, regulatory, and other product marking information.
provide tips for better use of the product.
Caution: Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property damage. Included text gives proper procedures.
Warning: Denotes a hazard. Failure to follow instructions could result in SEVERE personal injury and/or property damage. Included text gives proper procedures.
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General Safety Considerations

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Safety Symbol Definition
Warning: No operator serviceable
parts exist inside. Refer servicing to qualified personnel. To prevent electrical shock, do not remove covers.
Caution: Uninsulated voltage within the unit may have sufficient magnitude to cause electric shock. Therefore, it is dangerous to make any kind of contact with any parts inside this unit.
Caution: This instrument is shipped with a three-wire power cable, in accordance with international safety standards. When connected to an appropriate power line outlet, this cable grounds the instrument cabinet.
x |
See the ETS-Lindgren Product Information Bulletin for safety, regulatory, and other product marking information.
Archived 10/19/10

1.0 Introduction

The ETS-Lindgren FM5004 Field Monitor is a broadband electric and magnetic field monitor designed for use in radio frequency interference and electromagnetic compatibility (RFI/EMC) test system applications.
The FM5004 is compatible with the following ETS-Lindgren E (electric) field or H (magnetic) battery-operated field probes.
The FM5004 accepts inputs from up to any four probes, and analyzes and displays information on a user configurable LCD display.
Introduction | 11
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The FM5004 provides two digital interfaces (IEEE-488 and RS-232), a switch selectable 0–5 VDC analog output, and audible user selected field strength, temperature, and low probe battery alarms. It has a probe dependent frequency response of 10 kHz–40 GHz and a sensitivity of 0.5 V/m–3000 V/m,
15.0 mA/m–30 A/m (probe dependent).
Theory of Operation
For information about a specific probe, see the probe manual.
SYSTEM THEORY
A complete FM5004 system consists of one to four field measurement probes coupled to the FM5004 through fiber optic cables, and optional external devices.
The FM5004 contains fiber optic I/O cards to communicate with the probes, a main processor board, an LCD to display data and system status, a keypad for operator control, and an audible alarm to indicate field strengths above or below a user-defined value. RS-232 and IEEE-488 ports are provided for remote system operation and data collection, and an analog output port is provided for leveling purposes.
The probes and I/O cards use microprocessors to provide intelligent control and operation of the system. Each has a self-contained power supply: a universal input 110–230 VAC supply for the FM5004, and rechargeable battery packs for the probes.
When a field strength reading is requested by the FM5004, the I/O card for that probe sends the appropriate command to the probe through the fiber optic cable. The probe measures the signal level for each enabled axis, a vector addition is performed on these readings, and then the result is transmitted to the I/O card through the fiber optic cables. The I/O card formats the data from the probe and routes it to the main FM5004 processor for interpretation, display, and transmission to a remote recorder (if desired).
12 | Introduction
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SYSTEM BLOCK DIAGRAM
Introduction | 13
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Following are other commands performed by the probes; depending on the specific probe, additional commands may be available.
• Zero
• Switch range
• Enable/disable axis
• Send temperature/battery voltage
When a probe receives a command from the I/O card it performs the requested function and sends a response back to the FM5004.
RECEIVER THEORY
The FM5004 issues commands to the I/O cards, then the I/O card issues control signals to the probe processor. It also receives the data from the probe, formats it, and relays it to the FM5004 main processor.
The sampling rate, range settings, autorange enable/disable, display format, and other setup parameters are stored in Electrically Erasable Programmable Read-Only Memory (EEPROM). The setups are automatically restored each time the FM5004 is powered on. Flash EEPROM memory is used to store the main program. Random Access Memory (RAM) is used to temporarily store measurements and settings.
Inputs to the FM5004 come from the keypad switches on the front panel or from a remote control device connected through the IEEE-488 or RS-232 ports.
Information from the probes is communicated through the front panel LEDs and display. Optional receiver outputs include:
• Output to a remote receiver through the IEEE-488 or RS-232 ports
• Analog output (with 12-bit resolution) to recorders or leveling circuitry
• Programmable alarm values for driving a relay that controls a remote
alarm
The FM5004 power supply operates from a 115–230 VAC power source. The supply provides outputs of +5 VDC, -12 VDC, and +12 VDC.
14 | Introduction
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RECEIVER BLOCK DIAGRAM
Introduction | 15
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ZEROING
Not all probes have a zero function. For information on zeroing a probe, see the probe manual.
When a probe receives a zero command from the FM5004, the probe must be in a zero field. The processor directs the multiplexer to perform a normal read cycle on all axis signals; this procedure is executed for all 24 settings (four ranges, three axes per range, two antennas per axis). When the processor receives these readings, it stores them in a special register, and then these values are subtracted from all subsequent measurements. Therefore, a probe that is zeroed when it is not in a zero field environment will give erroneous readings.
ETS-Lindgren Product Information Bulletin
See the ETS-Lindgren Product Information Bulletin included with your shipment for the following:
• Warranty information
• Safety, regulatory, and other product marking information
• Steps to receive your shipment
• Steps to return a component for service
• ETS-Lindgren calibration service
• ETS-Lindgren contact information
16 | Introduction
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2.0 Maintenance

Before performing any maintenance, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.
WARRANTY
Maintenance of the FM5004 is limited to external components such as cables or connectors.
Warranty may be void if the housing is opened.
If you have any questions concerning maintenance, contact ETS-Lindgren Customer Service.
Maintenance Recommendations
W
EEKLY
• Check battery status using front panel switch or remote command.
M
ONTHLY
• Clean contaminants from the front panel with a damp cloth. Always unplug the unit before cleaning.
• Disconnect fiber optic cables and verify they are clean. See Maintenance of Fiber Optics on page 18 for cleaning guidelines.
• Inspect cables for kinks, breaks, cracks, and loose connectors.
Maintenance | 17
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Annual Calibration
See the Product Information Bulletin included with your shipment for information on ETS-Lindgren calibration services.
Maintenance of Fiber Optics
Fiber optic connectors and cables can be damaged from airborne particles, humidity and moisture, oils from the human body, and debris from the connectors they plug into. Always handle connectors and cables with care, using the following guidelines.
Before performing any maintenance, disconnect the fiber optic cables from the unit and turn off power.
When disconnecting fiber optic cables, apply the included dust caps to the ends to maintain their integrity.
Before connecting fiber optic cables, clean the connector tips and in-line connectors.
Before attaching in-line connectors, clean them with moisture-free compressed air.
Failure to perform these tasks may result in damage to the fiber optic connectors or cables.
Service Procedures
For the steps to return a system or system component to ETS-Lindgren for service, see the Product Information Bulletin included with your shipment.
18 | Maintenance
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3.0 Before You Begin

Before connecting any components or placing into operation, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.
Perform all steps in this section before powering on the FM5004 Field Monitor or installing it in a test environment.
Verify FM5004 Operation
1. Make sure the probes are fully charged. See the probe manual for
charging information.
2. Remove the protective covers from the fiber optic cable. Inspect the tips of the cable to verify they are free from dirt and other contaminants.
Save all protective caps and covers for re-use.
3. Attach the fiber optic cable to the transmit and receive connectors on the back of the FM5004, matching yellow to transmit and white to receive.
4. Attach the other end of the fiber optic cable to the probe connectors, matching white to transmit and yellow to receive.
5. Plug the power cord into the power connector on the back of the FM5004.
6. Plug the other end of the power cord into an electrical outlet.
Before You Begin | 19
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7. Set the ARM/OFF switch on all probes to ARM.
8. Power on the FM5004. A tone will sound, and it will perform a self-test.
If an error occurs, see Troubleshooting and Error Handling on page 105.
Verify Optional Connections
If optional connections are part of your system configuration, perform a bench test prior to installing the FM5004.
REMOTE OPERATION
1. Connect the RS-232 or IEEE-488 cable to the appropriate connector.
• If RS-232 remote control is used—See Baud Rate on page 72 for
information on setting the device baud rate.
• If IEEE-488 remote control is used—Set the DEVICE ADDRESS to
the appropriate bus address for your installation. See IEEE-488 Requirements on page 57 for more information.
2. Send an identification query (*IDN?<LF>) from the remote controller; verify that the FM5004 returns the proper response. See Identification Query on page 99 for more information.
20 | Before You Begin
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ANALOG OUTPUT
1. Connect the appropriate cable to the Analog Out connector on the
back of the FM5004.
2. Enable the analog output system and verify proper operation. See ANALOG OUT SETUP on page 42 for information on setting up the analog output system.
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4.0 Quick Start

Before placing into operation, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.
Before operating the FM5004, complete the steps in Before You Begin on page 25.
Following are the basic steps to configure and operate the FM5004 Field Monitor. To save time and improve accuracy during configuration, before you start the following steps identify the modes and configurations you want for each channel
See Front Panel Controls and Indicators on page 25 for complete information on using the switches, buttons, and other controls located on the front of the FM5004.
1. Set the ARM/OFF switch on all probes to ARM.
2. Press on the FM5004.
3. Verify no error codes appear on the FM5004 display and that there are
no fault indications. If an error code appears or a fault is indicated, see Troubleshooting and Error Handling on page 105.
4. Select the channel to which a probe is connected by pressing the channel select switch for that channel, and then press Disp.
Select the desired axes and whether the data is for display or for analog output.
5. If more than one probe is attached, repeat step 4 for each channel.
The configuration is saved in non-volatile memory. It will remain stored unless altered, regardless of whether the FM5004 is powered on.
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24 | Quick Start
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5.0 Front Panel Controls and Indicators

Before connecting any components or placing into operation, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.
The front panel of the FM5004 Field Monitor is divided into five sections: Power switch, Input Selection Matrix, System Status, Display, and Menu Select.
Power Switch
When power is turned on to the FM5004, it initiates a self-test.
The power switch controls power only to the FM5004, and does not affect power to the probes.
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Input Selection Matrix
The Input Selection Matrix includes Channel Select Switches, Base Mode Switches, and Channel Mode Indicators.
BASE MODE SWITCHES
The Base Mode Switches include Disp, Out, X, Y, and Z.
These switches are used to define the FM5004 base operating mode for the selected channel.
The base mode switches select a probe axis (or axes) for display and/or analog output. The input data for the assigned channel may be displayed on the Channel Mode Indicators and/or may be routed to analog output. The base mode selections for a given channel remain active until readjusted.
26 | Front Panel Controls and Indicators
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Switch Description
Disp When this LED is illuminated for a selected channel, that channel
is display selected, meaning that the readings from this probe will be routed to the display. The FM5004 displays the channel input as a numeric value. To set display mode parameters, use Menu Select. See Menu Select on page 32 for more information.
Out When this LED is illuminated for a selected channel, that channel
is analog output selected; meaning that the readings from this probe will be routed to the analog output system. See ANALOG OUT SETUP on page 42.
X, Y, Z This activates a particular axis on selected channel(s) for display
or analog output. Any combination of axes may be chosen; isotropic response requires selecting all three axes. When multiple axes are selected, individual axes are combined vectorially.
Some probes do not allow an individual axis to be disabled.
CHANNEL SELECT SWITCHES
The Channel Select Switches include Ch-1, Ch-2, Ch-3, and Ch-4.
These switches are used to select the input channel.
These switches determine the channel for which the base mode settings apply. A different base mode may be set up for each channel.
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When a channel select switch is pressed, the FM5004 establishes communication with the probe. During this process the base mode (Disp or Out) LED for that channel will flash. When the connection is established, the LED lights continuously. If the FM5004 fails to make connection with the probe, the LED will go dark.
CHANNEL MODE INDICATORS
These 24 LEDs form a matrix that signify the current channel and base mode selections. Following are examples that illustrate the correspondence between the LEDs and the base mode selections.
Example 1–Single Probe Configuration
1. Press channel select switch Ch-1 to select the probe attached to
channel 1.
2. Press base mode switches X ,Y, and Z to provide isotropic response.
3. Press Disp to display the numeric value of the vectorially-combined
axis values.
4. All LEDs in the top row of the matrix are illuminated, except for the second from the left.
All other LEDs are dark.
Example 2–Dual Probe Configuration
1. Press channel select switch Ch-1 to select the probe attached to
channel 1.
2. Press Ch-2 to select the probe attached to channel 2.
3. Press base mode switches X and Y to gather the data from only those
two axes.
4. Press Out to provide the vectorially-combined value of X and Y reading as an analog output.
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5. For channel 1, all LEDs in the top row are illuminated, except for the second from the left.
For channel 2, the middle three LEDs in the second row from the top are illuminated.
All other LEDs are dark.
System Status
The System Status selections provide one-button access to all selected probes for range and battery as well as enabling local control.
These buttons use Shift for additional functionality: alternate display, temperature, and reset.
To perform a function on a selected probe, press the channel select switch for the probe. The function will be performed only on the selected probe with the blinking LED. When no channels are selected, the function will be performed for all display or analog output selected channels.
RANGE (ALT DISP)
ANGE
R
Some probes do not respond to the range button due to the presence of an internal auto range function.
Press Range to determine the sensitivity of the probe. With each press of the button all selected probes will increment one range.
If the measured signal exceeds the full-scale value for the selected range, an over-range message will display. If the selected measured signal is too low, then an under-range indication will display.
Front Panel Controls and Indicators | 29
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Range Description
Auto Sets the selected channels to autorange.
1 to 4 Sets the selected channels to the desired range. See the probe
manual for a description of the units of measure and range levels.
5 Some probes may use five or more ranges; this is supported by
the FM5004.
(ALT DISP)
To change to the alternate display mode, press Shift. Set up alternate display by selecting ALT DISPLAY FORMAT in the Main Menu. The FM5004 supports two display formats. See Display Format on page 36 for more information.
BATTERY (TEMP)
ATTERY
B
Press Battery to display a percentage that represents where in the discharge curve the battery voltage is for each selected probe. This number is derived by taking the actual voltage of the battery pack, subtracting it from the minimum voltage level for the battery (3.18 Volts for a three-cell battery pack), and dividing the result by the full range of the battery (maximum charge voltage minus fully discharged voltage; 4.10–3.18 Volts for a three-cell battery pack).
Due to the non-linear discharge curve of nickel-cadmium (NiCd) batteries, the percentage displayed does not reflect the actual operation time left for a probe. It is recommended that for each probe, the approximate battery life left for a given battery voltage percent be noted. In addition, as a battery ages, the overall voltage decreases.
When the battery level drops below approximately 13% (3.3 Volts for a three-cell battery pack), a low battery warning will display. When this occurs, the battery should be charged as soon as possible.
When the battery voltage drops to the fully discharged level, a battery fail indication will display. When this occurs, measurement accuracy will be compromised by further operation.
30 | Front Panel Controls and Indicators
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