HI-4450/FP2080/FP4080/FP5080, MANUAL, Part #600057
Revision Description Date
Initial Release October, 1993
A Isotropicity Spec October, 1994
B Changed Battery Charger June, 1997
C Added CE Label June, 1997
D Changed Charger Spec August, 1999
E Changed Area Code February, 2000
F Revised June, 2005
The HI-4450/FP2080/FP4080/FP5080 Electric Field Probes
embody the latest innovations in isotropic sensor design and low
noise, miniaturized electronics. The HI4450/FP2080/FP4080/FP5080 probes are fully intelligent sensor
enabling fast and accurate EMF measurements with industryleading performance specifications. Optical coupling to a variety
of readout options makes this new probe ideally suited for a wide
range of field monitoring applications. The HI4450/FP2080/FP4080/FP5080 probes are excellent tools for
electric field mapping, RADHAZ measurements and EMC field
monitoring.
The basic HI-4450/FP2080/FP4080/FP5080 probes are shipped
complete with a 10 meter fiber extension cable, a carrying case,
battery charger and connectors for extending the optic cable.
The HI-4450/FP2080/FP4080/FP5080 probe assembly consists
of a spherical casing, containing the sensor, which is mounted
on one end of a shaft; the other end of the shaft is attached to an
extrusion that houses the electronics (Figure 1). The sensor and
electronics housing operate-and are calibrated-as a unit.
The HI-4450/FP2080/FP4080/FP5080 measures the field
strength in each of three axes. It performs a vector addition
calculation on the readings and sends the resultant to the
receiver via a fiber optic cable. Frequency response of the HI4450/FP2080/FP4080/FP5080 is 80 MHz to 40 GHz; dynamic
range is 1 to 300 Volts per meter (V/m).
Step 1. Upon delivery of your order, inspect the shipping
container(s) for evidence of damage. Record any damage on
the delivery receipt before signing. In case of concealed
damage or loss, retain the packing materials for inspection by
the carrier.
Step 2. Remove the probe from its shipping containers. Save
the boxes and any protective packing materials for future use.
Step 3. Check all materials against the packing list to verify that
the equipment received matches what was ordered. If you find
any discrepancies, note them and call ETS-Lindgren Customer
Service for further instructions.
Be sure that you are satisfied with the contents of your order and
the condition of your equipment before installing the probe.
PROBE
A switch, two fiber optic connectors and a battery charger
connector are mounted on the HI-4450/FP2080/FP4080/FP5080
electronics housing (Figure 2).
The fiber optic cable assembly from the receiver is attached to
the probe via two connectors. The cables are color-coded white
for XMIT, yellow for RCV. Identically colored dots are located on
the electronics housing adjacent to these connectors. Be sure
that each cable is attached to the proper probe connector.
Figure 2: Switch and Connectors
When the fiber optic cables are not attached, always cover the
probe connectors with the protective plastic covers supplied with
the unit, or with similar material. This prevents dirt or other
contaminants from entering the connector and causing
communication problems.
The ARM/OFF switch activates and deactivates the probe. In
the ARM position, its internal 3.6 VDC NiCd battery powers the
probe: in the OFF position, the probe is inactive. To prolong
battery life, set the ARM/OFF switch to OFF at the end of a test
sequence or when the probe is not in use.
CHARGER
A standard fast charger is supplied with the HI4450/FP2080/FP4080/FP5080. When charging is complete, the
fast charger acts as a trickle charger. The battery can be left on
this maintenance mode indefinitely and its performance will not
degrade.
BATTERY
The NiCd battery provides up to 17 hours of probe operation
when fully charged.
BATTERY CHARGING
Each HI-4450/FP2080/FP4080/FP5080 probe contains a
rechargeable nickel-cadmium (NiCd) battery. A fully-charged
battery (nominal output voltage of 3.6 VDC) provides up to 17
hours of continuous operation.
NOTE: ETS-Lindgren charges the internal NiCd battery
of the HI-4450/FP2080/FP4080/FP5080 at the factory in
order to calibrate the probe prior to shipment. While
every effort is made to ensure that your probe arrives
ready to use, we cannot guarantee that this will be the
case. Always check the condition of the probe's battery
prior to making any measurements.
Step 1. Plug the charger into a suitable AC source.
Step 2. Set the probe switch to OFF. Insert the plug on the
charger cable into the probe's CHARGER jack.
Step 3. The battery is now charging. This may take
approximately one hour, depending on how deeply the batteries
are discharged. When charging is complete, the charger
automatically goes into a trickle charge and will continue to do so
until the probe is disconnected.
BATTERY TIPS
NiCd batteries have several characteristics that can affect both
their performance and operating life. The following tips advise
you how to take advantage of these characteristics to get the
most out of your probe’s battery.
•Although NiCd batteries are rated for operation in
temperatures from -20°C to +65°C (-4 °F to +140 °F),
operating the probe in extreme temperatures will reduce
operating time significantly. The optimum operating
temperature range for these batteries is
+20°C to +30°C (+68°F to +86°F).
•The battery in the HI-4450/FP2080/FP4080/FP5080
probe does not require periodic "deep discharges" to
reverse the capacity-depleting "memory effect" caused
by repeated shallow discharges; however,
undercharging can reduce battery capacity. Therefore,
after the charging procedure is complete, be sure that
the battery is fully charged before resuming field
operation.
•If the battery exhibits low terminal voltage during
charging, or if it appears unable to acquire or maintain
an appreciable charge, individual cells in the battery may
be shorted or damaged. If, for any reason, your battery
needs replacement, contact ETS-Lindgren Customer
Service for assistance.
This section discusses the theory of operation and the functions
of the HI-4450/FP2080/FP4080/FP5080 Isotropic Electric Field
Probe. A high-level block diagram (Figure 3) is included to aid
the discussion. The objective is to provide information
enhancing user understanding of the design of this probe.
SYSTEM THEORY
The HI-4450/FP2080/FP4080/FP5080 Broadband Isotropic
Electric Field Probe utilizes a microprocessor for intelligent
operation and control. The probe's self-contained power supply
employs a 3.6 VDC NiCd battery, which provides up to 17 hours
of continuous operation.
For each axis, the probe measures the radio frequency signal
level and generates a linearized reading of the measurement. A
vector addition is performed on these three readings: the result is
transmitted to the readout over glass fiber optic cables. See
"Probe Operation" below for a more detailed explanation of the
functioning of the HI-4450/FP2080/FP4080/FP5080.
The probe relays data to the readout via either a short form or
long form output word. See Appendix B for details on both
output word formats.
For some applications, you may use any computer with an
RS232 serial port to communicated directly with the HI4450/FP2080/FP4080/FP5080 via ETS-Lindgren’s optional HI4413P Fiber Optic/RS232 Interface.
Receiver commands to the probe consist of the following:
• Sending reading
• Switch range
• Read battery voltage
• Zero
• Read temperature
• Enable axis
• Set sleep timer
The signal flow within the probe is shown in the block diagram.
To measure field strength, three mutually orthogonal dipole
antennas (one per axis) are used to provide an isotropic
response to the ambient field. The signal from each axis is fed
to a Schottky diode detector operating in its Square-Law region.
After filtering, the signals generated by each axis are added
vectorially: the result is fed to the instrumentation amplifier,
whose output feeds the selectable range/offset stage.
NOTE: The HI-4450/FP2080/FP4080/FP5080 does not
allow the option of measuring on an individual axis: all
three axes are active at all times. Consequently, the
change axis commands have no effect.
For each of the four ranges, the selectable range and offset
stage provides a coarse analog zero for the measured signal.
The output of the range/offset stage is fed to the A/D multiplexer,
then to the analog-to-digital (A/D) converter itself.
After acquiring the composite three-axis signal, the
microprocessor commands the A/D multiplexer to read the
battery voltage and temperature sensing lines.
Data from the A/D converter is fed to the microprocessor, which
transmits it to the receiver.
The EEPROM stores all calibration data for the probe.
A sealed rechargeable 3.6 VDC NiCd battery, which drives both
the analog and digital power supplies, powers the HI4450/FP2080/FP4080/FP5080 probe; separate power sources
provide isolation between the analog and digital circuitry. With
the probe switch in the ARM position, battery voltage is applied
to the power switch, which routes this voltage to the power
supply, enabling the microprocessor.
ZEROING
When the receiver sends a zero command, the probe must be in
a zero field environment. This is because the zero command
causes the multiplexer (via the processor) to perform a normal
read cycle on the composite axis signal. This procedure is
executed for all ranges. When the processor receives all the
zero-field values, it stores them in a special register; these
values are subtracted from all subsequent measurements.
Therefore, a probe that is zeroed while it is not in a zero field
environment will give erroneous readings.
NOTE: The probe uses volatile random access memory
(RAM) to store the zero values. If the power to the
probe is cycled, the zero values will be lost.
APPLICATION CONSIDERATIONS
The following subsections contain information designed to help
you maximize the effectiveness of the HI4450/FP2080/FP4080/FP5080.
OUT-OF-BAND CONSIDERATIONS
Although the HI-4450/FP2080/FP4080/FP5080 is nominally
rated for operation from 80 MHz to 40 GHz, it responds to
signals both above and below these frequencies. Such
responses must be taken into account when performing certain
operations, such as zeroing.
On the lower end, the HI-4450/FP2080/FP4080/FP5080 can
exhibit significant response to frequencies below 80 MHz. Such
out-of-band responses pose a problem when zeroing the unit,
since that operation obviously assumes a zero field condition. At
the upper end, similar problems can occur. The specified upper
operating limit for this probe is 40 GHz. Above this limit there will
be some response, though it will not be consistent or predictable.
Any probe response to out-of-band frequencies must be
compensated for when zeroing the probe.
RESOLUTION LIMITATIONS
Limitations in probe resolution may result in a non-zero reading
when the receiver is zeroed. If this occurs, it does not
necessarily mean either that there is a problem with the receiver
or that your readings are inaccurate. Receiver linearity is
specified as + 0.5 dB full scale: in addition, the variance of the
A/D converter is + 2 least significant bits. When using the most
sensitive range on a given probe, these specifications create the
possibility that, under zero field conditions, the receiver may
display a non-zero value.
PROBE SUPPORT STRUCTURES
It is very important to keep conductive objects away from the HI4450/FP2080/FP4080/FP5080. Any such objects in the
proximity of the probe may distort the field and compromise
measurement accuracy. If your application requires
measurements from a fixed position, always mount the probe on
a non-metallic platform, using non-metallic screws.
This section explains which maintenance tasks can be
performed by the user. It also provides information regarding
replacement and optional parts. If you have any questions
concerning probe maintenance, consult ETS-Lindgren Customer
Service.
MAINTENANCE RECOMMENDATIONS
Maintenance of the HI-4450/FP2080/FP4080/FP5080 probe is
limited to external components such as cables or connectors.
Any calibration or maintenance task that requires probe
disassembly should be performed at the factory. Check with
ETS-Lindgren Customer Service (+1-512-531-6400) before
opening the unit to avoid problems with your probe's warranty.
NOTE: Opening the probe enclosure may void your
warranty. If your system is still under warranty, contact
ETS-Lindgren Customer Service before performing any
maintenance inside the probe.
UPGRADE POLICIES
Periodically, probes are upgraded to enhance functionality.
These upgrades are commonly announced through ETSLindgren Engineering Bulletins.
RETURN PROCEDURES
To return a system or system component, use the following
procedure.
Step 1. Contact ETS-Lindgren Customer Service (+1-512-531-
6400) to obtain an SRO, Service Request Order.
Step 2. Briefly describe the problem in writing. Give details
regarding the observed symptom(s) or error codes, and whether
the problem is constant or intermittent in nature. Please include
the date(s), the service representative you spoke with, and the
nature of the conversation. Include the serial number of the item
being returned.
Step 3. Package the system or component carefully. Use the
original packing boxes and materials, if possible.
NOTE: If your probe is calibrated in accordance with
MIL-Std-45662A, it is to your benefit to retain the original
shipping box and packing materials. One of the criteria
for certifying a calibration to MIL standards requires
ETS-Lindgren to always ship equipment in the specified
packaging. When a MIL Standard instrument is sent to
ETS-Lindgren in other packaging, we must replace it
with the specified packaging materials for return
shipment. YOU WILL BE BILLED FOR THE NEW
PACKAGING.
If the probe is under warranty, refer to the Limited Warranty
section of this manual for additional information about your
return.
PERIODIC/PREVENTIVE MAINTENANCE
The HI-4450/FP2080/FP4080/FP5080 probe assembly (sensor
and electronics housing) requires an annual calibration to verify
that they are performing within specifications. ETS-Lindgren
service personnel may perform this calibration at the factory.
Return your probe(s), using the original packing materials (if
possible), to:
5. WARRANTY POLICY FOR
ELECTROMAGNETIC ISOTROPIC
FIELD MONITORING
COMPONENTS
SCOPE AND DURATION OF WARRANTIES
Seller warrants to Buyer that the Holaday Brand Products to be
delivered hereunder will be (1) free from defects in material,
manufacturing workmanship, and title, and (2) conform to the
Seller’s applicable product descriptions and specifications, if any,
contained in or attached to Seller’s quotation. If no product
descriptions or specifications are contained in or attached to the
quotation, Seller’s applicable product descriptions and
specifications in effect on the date of shipment shall apply. The
criteria for all testing shall be Seller’s applicable product
specifications utilizing factory-specified calibration and test
procedures and instruments.
All product warranties, except the warranty of title, and all
remedies for warranty failures are limited in time as shown in the
table below.
Any product or part furnished to Buyer during the warranty period
to correct a warranty failure shall be warranted to the extent of
the unexpired term of the warranty applicable to the repaired or
replaced product.
FM5004 3 Years
HI-6005 3 Years
HI-6001 3 Years
HI-4450 3 Years
FP-4080 3 Years
FP-5000 3 Years
FP-2080 3 Years
HI-4453 3 Years
FP-4083 3 Years
FP-5083 3 Years
FP-2083 3 Years
FP-5080 3 Years
FP-4000 3 Years
FP-2000 3 Years
HI-4422 3 Years
25
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Isotropic Electric Field Probe
Archived 4/02/10
The warranty period shall commence on the date the product is
delivered to Buyer; however, if Seller as sembles the product, or
provides technical direction of such assembly, the warranty
period for such product shall commence on the date the
assembly of the product is complete. Notwithstanding the
foregoing, in the event that the assembly is delayed for a total of
thirty (30) days or more from the date of delivery for any reason
or reasons for which Seller is not responsible, the warranty
period for such product may, at Seller’s options, commence on
the thirtieth (30th) day from the date such product is delivered to
Buyer. Buyer shall promptly inspect all products upon delivery.
No claims for shortages will be allowed unless shortages are
reported to Seller in writing within ten (10) days after delivery. No
other claims against Seller will be allowed unless asserted in
writing within thirty (30) days after delivery (or assembly if the
products are to be assembled by Seller) or, in the case of
alleged breach of warranty, within the applicable warranty period.
WARRANTY EXCLUSIONS
Except as set forth in any applicable patent indemnity, the
foregoing warranties are exclusive and in lieu of all other
warranties, whether written, oral, express, implied, or statutory.
EXCEPT AS EXPRESSLY STATED ABOVE, SELLER MAKES
NO WARRANTY, EXPRESS OR IMPLIED, BY STATUTE OR
OTHERWISE, WHETHER OF MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE OR USE OR
OTHERWISE ON THE PRODUCTS, OR ON ANY PARTS OR
LABOR FURNISHED DURING THE SALE, DELIVERY OR
SERVICING OF THE PRODUCTS. THERE ARE NO
WARRANTIES THAT EXTEND BEYOND THE DESCRIPTION
ON THE FACE HEREOF.
Warranty coverage does not include any defect or performanc e
deficiency (including failure to conform to product descriptions or
specifications) which results, in whole or in part, from (1)
negligent storage or handling of the product by Buyer, its
employees, agents, or contractors, (2) failure of Buyer to prepare
the site or provide an operating environmental condition in
compliance with any applicable instructions or recommendations
of Seller, (3) absence of any product, component, or accessory
recommended by Seller but omitted at Buyer’s direction, (4) any
design, specification, or instruction furnished by Buyer, its
employees, agents or contractors, (5) any alteration of the
product by persons other than Seller, (6) combining Seller’s
product with any product furnished by others, (7) combining
incompatible products of Seller, (8) interference with the radio
frequency fields due to conditions or causes outside the product
as furnished by Seller, (9) improper or extraordinary use of the
product, or failure to comply with any applicable instructions or
recommendations of Seller, or (10) acts of God, acts of civil or
military authority, fires, floods, strikes or other labor
disturbances, war, riot, or any other causes beyond the
reasonable control of Seller. This warranty does not cover
batteries or any item that is designed to be consumable. Seller
does not warranty products of others, which are not included in
Seller’s published price lists.
BUYER’S REMEDIES
If Seller determines that any product fails to meet any warranty
during the applicable warranty period, Seller shall correct any
such failure by either, at its option, repairing, adjusting, or
replacing without charge to Buyer any defective or
nonconforming product, or part or parts of the product. Seller
shall have the option to furnish either new or exchange
replacement parts or assemblies.
Warranty service during the applicable warranty period will be
performed without charge to Buyer within the contiguous 48
United States during Seller’s normal business hours. After the
warranty period, service will be performed at Seller’s prevailing
service rates. Subject to the availability of personnel, after-hours
service is available upon request at an additional charge. For
service outside the contiguous 48 United States, travel and per
diem expenses, when required, shall be the responsibility of the
Buyer, or End User, whichever is applicable.
The remedies set forth herein are conditioned upon Buyer
promptly notifying Seller within the applicable warranty period of
any defect or nonconformance and making the product available
for correction.
The preceding paragraphs set forth Buyer’s exclusive remedies
and Seller’s sole liability for claims based on failure of the
products to meet any warranty, whether the claim is in contract,
warranty, tort (including negligence and strict liability) or
otherwise, and however instituted, and, upon the expiration of
the applicable warranty period, all such liability shall terminate.
IN NO EVENT SHALL SELLER BE LIABLE TO BUYER FOR
ANY SPECIAL INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OF ANY KIND ARISING OUT OF, OR AS A
RESULT OF, THE SALE, DELIVERY, NON-DELIVERY,
SERVICING, ASSEMBLING, USE OR LOSS OF USE OF THE
PRODUCTS OR ANY PART THEREOF, OR FOR ANY
CHARGES OR EXPENSES OF ANY NATURE INCURRED
WITHOUT SELLER’S WRITTEN CONSENT DESPITE ANY
NEGLIGENCE ON BEHALF OF THE SELLER. IN NO EVENT
SHALL SELLER’S LIABILITIES UNDER ANY CLAIM MADE BY
BUYER EXCEED THE PURCHASE PRICE OF THE PRODUCT
IN RESPECT OF WHICH DAMAGES ARE CLAIMED. This
agreement shall be construed in accordance with laws of the
State of Illinois. In the event that any provision hereof shall
violate any applicable statute, ordinance, or rule of law, such
provision shall be ineffective to the extent of such violation
without invalidating any other provision hereof.
Any controversy or claim arising out of or relating to the sale,
delivery, non-delivery, servicing, assembling, use or loss of use
of the products or any part thereof or for any charges or
expenses in connection therewith shall be settled in Austin,
Texas by arbitration in accordance with the Rules of the
American Arbitration Association, and judgment upon the award
rendered by the Arbitrator may be entered in either the Federal
District Court for the Western District of Texas or the State
District Court in Austin, Texas, all of the parties hereto
consenting to personal jurisdiction of the venue of such court and
hereby waive the right to demand a jury trial under any of these
actions
If an error occurs, the probe will respond with one of the
following strings. These strings begin with a colon and end with
a carriage return.
E01 Communication error (e.g., overflow).
E02 Buffer full error. Too many characters contained
between the Start Character/Carriage Return sequence.
E03 The received command is not valid.
E04 The received parameter is not valid.
E05 Hardware error (e.g., EEPROM failure).
E06 Parity error.
The information in this appendix assumes that you have
purchased the optional HI-4413G Fiber Optic/RS232 Interface,
and are capable of communicating directly with the HI4450/FP2080/FP4080/FP5080 probe via computer. No system
readout is required when using this configuration.
COMMUNICATION PROTOCOL
Data Type: RS-232 Serial
Data Mode: Asynchronous
Word Length: 7 bit
Parity: Odd
Stop Bits: 1
Data Rate: 9600 baud
INFORMATION TRANSFER PROToCOL
The HI-4450/FP2080/FP4080/FP5080 operates as a Controller
Mode device. This probe only responds to commands from
another device; it transmits no data without receiving instructions
to do so.
COMMAND STRUCTURE
A command to an HI-4450/FP2080/FP4080/FP5080 probe
consists of
When it completes the command, the probe responds with a
string consisting of
1) S start character (":")
2) The command letter, followed by
3) Data, if required, and terminated with
4) A carriage return
If the command does not require the probe to return any data,
the probe simply responds with the command letter and a
carriage return. If an error occurs, the probe responds with an
error code, as detailed in Appendix A.
COMMANDS
Command Description
B Read battery voltage.
Cx Set baud rate.
x = 1 sets rate to 2400 baud
x = 2 sets rate to 9600 baud
New baud rate does not take effect until the next
power-up.
Dx Read probe data.
x = 1 enables short form output
x = 2 enables long form output
Lx Load table data. x = ASCII hex data
Rx Set range. x = 1, 2, 3, 4 or N (next range)
Sx Sleep timer. x = number of seconds to wait for a
command before putting the probe into the sleep
mode.
Rx Rx, where x is the range.
x = "" returns the range currently in use
x = 1, 2, 3, 4 enables the selected range
x = N sets the probe to the next (higher) range.
TF Txxx, where xxx is temperature in ° Fahrenheit.
TC Txxx, where xxx is temperature in ° Centigrade.
Vtx Vxx[xx...], where xx is table data in ASCII hex.
ETS-Lindgren L.P. reserves the right to make changes to any
product described herein in order to improve function, design or
for any other reason. Nothing contained herein shall constitute
ETS-Lindgren L.P. assuming any liability whatsoever arising out
of the application or use of any product or circuit described
herein. ETS-Lindgren L.P. does not convey any license under its
patent rights or the rights of others.
This symbol alerts the user that important
literature concerning the operation and
maintenance of this unit has been included.
Therefore, it should be read carefully in order
to avoid any problems.
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. DO NOT defeat the earthgrounding protection by using an extension
cable, power cable, or autotransformer without
a protective ground conductor.
This instrument is to be used with a three-wire
power cord set which meets or exceeds the
requirements of EN60799. The power cord set
used must be rated for a minimum of
250V/10A. When connected to an appropriate
power line outlet, this cable grounds the
instrument cabinet.
Warning--No operator serviceable parts exist
inside the device. Refer servicing to qualified
personnel. To prevent electrical shock, do not
remove cover.
Warning--If this instrument is used in a manner
not specified by ETS-Lindgren, the protection
provided by the instrument may be impaired.
Warning--This battery charger incorporates
parts, such as a switch and relay that
potentially could produce sparks or arcs.
Warning--For indoor use only, do not expose
to rain.
The 491198-36 NiCd Battery Fast Charger is a dual power
source battery charger. It charges 3.6 volt 1400 mAH NiCd
batteries and is powered by 120-240 Vac line power or 12.5 Vdc.
The 491198-36 uses a -(dV)/(dT) (negative delta V) technique to
determine when the battery is fully charged, typically one hour.
With this technique, the charge state of the battery has no effect
other than shortening the charge time.
Housed in a rugged enclosure, power enters the battery charger
through a power entry module, which contains the fuses, or an
optional cigarette lighter plug adapter. LEDs and the label on the
front face of the unit provide operating status. The battery
charger connects to the device being charged through a short
cord terminated with a power jack.
An integrated circuit within the charger monitors the battery
voltage and controls the charging functions according to the
charge state of the battery.
This section contains information on unpacking and acceptance
of the 491198-36 NiCd Battery Fast Charger.
Step 1. Upon delivery of your order, inspect the shipping
container(s) for evidence of damage. Record any damage on
the delivery receipt before signing. In case of concealed
damage or loss, retain the packing materials for inspection by
the carrier.
Step 2. Remove the product from its shipping container. Save
boxes and any protective packing materials for future use.
Step 3. Check all materials against the packing list to verify that
the equipment received matches that which was ordered. If you
find any discrepancies, note them and call ETS-Lindgren
Customer Service for further instructions.
Be sure that you are satisfied with the contents of your order and
the condition of your equipment before
110 - 240 Vac, 500 mA MAX., 50 - 100 Hz
Alternate: Automobile cigarette lighter to 2mm power plug
adapter cord., 12.5 Vdc, 100 mA
Fuses: 250 Volt, 1.0 Amp, Type T (5 mm x 20 mm)
Output
Open Circuit Voltage: 15 Vdc
Fast Charge Pending Current: 60 mA
Fast Charge Current: 1400 mA
Pulsed Trickle Charge Current: 50 mA
Output Voltage (During Fast Charge): 3 - 6 Vdc
NiCd Battery:
3.6 Volt 3 Cell NiCd Battery, 1400 mAH (Rapid charge cells, 1.2
volts/cell); ETS-Lindgren Part #491038
Environmental
Operating temperature 10 to 40{ C
Humidity: 5% to 95% relative humidity,
non-condensing
Power Cable
This charger is shipped with a three-wire power cable. When
this cable is connected to an appropriate AC power source, it
connects the chassis to earth ground. The type of power cable
shipped with each battery charger depends on the country of
destination.
The 491198-36 battery charger is intended to charge the 3.6 volt
NiCd batteries, either in the lab or in the field.
Input Power Requirements
The 491198-36 charger may be powered by standard line
voltage (110 - 240 Vac, 50 - 60 Hz) or by an optional automobile
cigarette lighter plug (12.5 Vdc), see specifications. The AC
power entry module contains a fuse.
Fuse Replacement
If a fuse has blown, it must be replaced with the same type and
value or an unsafe condition may result. Refer to Figure 2 for
fuse replacement.
The fuse is contained in the fuse drawer in the power input
module. To access the fuse, use a screwdriver to pry the drawer
open and remove it from the module. The drawer holds two
fuses; the fuse towards the outside of the drawer is a spare.
After the fuse has been replaced, slide the fuse drawer back into
the module. Make sure that it snaps securely into its locked
position.
There are five LEDs located on the front of the charger that
provide operating information to the user.
The “POWER ON” LED (green) will remain illuminated as long
as the charger is plugged into the AC power source.
If the charger does not detect a battery, the “NO BATTERY” LED
(amber) light will illuminate.
When the charger does detect the unit’s battery, the “PENDING”
LED (amber) light illuminates while the charger qualifies the
battery for fast charge. If the voltage is below the safe fast
charge level, the battery is charged in the pulse trickle mode.
When the voltage is at a safe level the charger will switch to the
fast charge mode and the “CHARGING” LED (amber) light
illuminates.
When charging is complete, the charger switches back to the
pulse trickle mode and the “COMPLETE” LED (green) light will
illuminate. The device can be left on the charger in this
maintenance mode indefinitely.