Ballantine 3440A User manual

INSTRUCTION MANUAL
For
MODEL
3440A
RF MILLIVOLTMETER
Ballantine Laboratories, Inc.
www.ballantinelabs.com
e-mail: [email protected]
312 Old Allerton Road, Annandale, New Jersey, 08801, USA
Phone:[phone], Fax:[phone]
90-10255-5F, March 2014
REPRODUCTION AND DISTRIBUTION
OF THIS TECHNICAL MANUAL IS
AUTHORIZED FOR U.S. GOVERNMENT
PURPOSES
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II
LIMITED WARRANTY
Ballantine Laboratories, Inc.warrants its products to be freE~ from defects in material and
workmanship. Rigorous quality control permits astandard newequipmentwarranty on
material
anal workmanship of one yearfrom date of shipment. During the in-warranty
period,
we will service or, at ouroption, replace atthe factory, any device thatfails in
normal use to meet its published specifications. Computers, batteries, relays, and
thermal elements that have given normal service are excepted. Special systems will
havewarranty periods as listed
in their quotation.
The company makes no warranties or representations as to performance of products or
as to service to purchaser or to any other person, except as set forth in the company's
limited warranty accompanying delivery
of products. The company reserves the right to
change the warranty and service policy setforth
in such limited warranty, or otherwise, at
anytime without further notice and without liability to purchaser
or to any otherperson by
reason
of any such change unless considered unenforceable or unlawful under
applicable law:
i) All implied warranties, including, but not limited to implied warranties of
merchantability and fitness for aparticular purpose, are hereby excluded. ii) The liability
of the company, ifany, for damages relating to allegedly defective products shall, under
legal
or equitable theory, be limited to the actual price paid by purchaserfor such
products and shall
in no event include incidental or consequential damages of any kind.
iii) 90 day warranty on all factory service repairs.
II
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TABLE OF CONTENTS
SECTION
1
-
GENER
AL INFORMATION
2
-
INSTALL
A
TION
OPERATING INSTRUCTIONS
4
-
THEORY OF OPERATION
MAINTENANCE AND CALIBRATION
6
-
PARTS LISTS AND SCHEMATIC DIAGRAMS
PAGE
1
-
1.
INTRODUCTION
1
-
1
1
-
2.
SPECIFICATIONS FOR MODEL 3440A
1
-
1
1
-
3.
SPECIFICATIONS FOR MODEL 3440A
-
OPTION 40
1-3
1
-
4.
ADDITIONAL SPECIFICATIONS FOR THE
LOW FREQUENCYPROBE
1
-
4
1
-
5.
MODIFICATIONS, OPTIONS AND ACCESSORIES
1
-
4
2
-
1.
INTRODUCTION
2
-
1
2
-
2.
UNPACKING
-
INITIAL INSPECTION
2
-
1
2
-
3
.
PERFORMANCE CHECKS
2
-
1
2
-
4.
POWER REQUIREMENTS
2
-
1
2
-
5.
GROUNDING REQUIREMENTS
2
-
1
2
-
6.
INSTALLATION AND MOUNTING
2
-
1
2
-
7.
BENCH MOUNTING
2
-
1
2
-
8.
SHORT TERM STORAGE
2
-
1
2
-
9.
LONG TERM STORAGE OR REPACKAGING FOR SHIPMENT
2
-
2
3
-
1.
INTRODUCTION
3
-
1
3
-
2.
CONTROLS, INDICATORS AND CONNECTORS
3
-
1
3
-
3.
METER MECHANICAL ZERO ADJUSTMENT
3
-
1
3
-
4.
POWER REQUIREMENTS
3
-
1
3
-
5.
AC VOLTAGE MEASUREMENTS
3
-
2
3
-
6.
OPERATING NOTES
3
-
3
3
-
7.
MEASUREMENTS BELOW 100 MHZ.
3
-
3
3
-
8.
MEASUREMENTS BELOW 250 MHZ.
3
-
4
3
-
9.
MEASUREMENTS BELOW 600 MHZ
3
-
4
3
-
10.
MEASUREMENTS BEYOND 1.2 G
H
Z.
3
-
4
3
-
11.
SOURCES OF MEASUREMENTERRORS
3
-
5
3
-
12.
LOADING ERRORS
3
-
5
3
-
13.
VOLTAGE DROP IN CONNECTING LEADS
3
-
5
3
-
14.
STRAYFIELD PICKUP
3
-
6
3
-
15.
TRANSMISSION LINE EFFECTS
3
-
7
3
-
16.
GROUND CURRENT ERRORS
3
-
7
3
-
17.
RESPONSE AND WAVEFORM ERRORS
3
-
8
3
-
18.
NOISE MEASUREMENTS
3
-
9
3
-
19.
DB MEASUREMENTS
3
-
9
3
-
20.
RELATIVE REFERENCE MEASUREMENTS
3
-
10
3
-
21.
AC TO DC CONVERTER
3
-
10
3
-
22.
TEMPERATURE EFFECTS
3
-
10
4
-
1.
INTRODUCTION
4
-
1
4
-
2.
CIRCUIT DESCRIPTION
4
-
1
4
-
3.
RF PROBE
4
-
1
4
-
4.
STABILIZED INPUTAMPLIFIER
4
-
1
4
-
5.
DIFFERENTIAL TO SINGLE
-
ENDED AMPLIFIER
4
-
2
4
-
6.
SQUARE
-
ROOTER CIRCUIT
4
-
2
4
-
7.
LINEAR AMPLIFIER
4
-
2
4
-
8.
SCALE LINEARIZING AND RANGING NETWORK
4
-
2
4
-
9.
METER DRIVE AMPLIFIER
4
-
2
4
-
10.
RANGE SELECT LOGIC
4
-
3
4
-
11.
POWER SUPPLY
4
-
3
5
-
1.
INTRODUCTION
5
-
1
5
-
2.
RECOMMENDED TEST EQUIPMENT
5
-
1
5
-
3.
PERFORMANCE ASSURANCE CHECKS
5
-
1
5
-
4.
CALIBRATION AND ALIGNMENTPROCEDURE
5
-
5
5
-
5.
TROUBLESHOOTING AND FAULTFINDING
5
-
10
5
-
6.
PREVENTIVE MAINTENANCE
5
-
11
3
-
5
-
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Section 1. General Information
page 1-1
GENERAL INFORMATION
1-1. INTRODUCTION
The Ballantine Model 3440 Series are compact,
lightweight portable RF Millivoltmeters. The
instruments are sensitive, wideband, fully solid state
voltmeters covering 100 µV to 3 V rms. Voltage
measurements may be extended to 300 V rms with the
Model 1340 100:1 capacitive attenuator. The 3440A is
usable over the frequency range of 10 kHz to beyond
1.2 GHz.
The Model 3440A uses an analog meter for readout
with 10 dB range switching. The instrument and its
accessories and options are described in this manual.
A feature of the Model 3440A RF Millivoltmeter is
true rms response from 100 µV to 30 mV. This feature
permits measurement of distorted signals and square
waves. It allows calibration to NIST traceable transfer
standards which are based on rms responding devices.
Through use of the Model 1340A 100:1 divider, true
rms measurements may be extended to 3 V.
The 3440A is housed in a lightweight rugged 1/2-rack
enclosure which is fully shielded and only 5.25 inches
high.
Power consumption is minimal so that rechargeable
battery option -05 provides a full working day of
operation. All range switching is done electronically;
the front panel rotary switch does not carry any signal.
The 3440A incorporates an exclusive Ballantine
development; using analog computation to obtain
diode curve matching to calibrate the millivoltmeter as
the input signal level increases and the input detector
diodes change from rms response to peak response.
This unique circuit minimizes the number of
adjustments and simplifies recalibration and
maintenance.
The probe features wideband, low capacity detector
diodes mounted in a rugged housing whose body is
compatible with type "N" connectors. A unique
proportional, solid state, temperature controlled, self-
regulating heater maintains the diodes at a constant
temperature and completely eliminates major
calibration accuracy errors due to temperature changes.
The probe is attached to the instrument through a
"quick-disconnect" 4 foot cable and is easily
interchangeable between instruments with minimum
realignment. The durable probe cable is double
shielded and uses special low noise insulation to
maximize accuracy and convenience in rough field
environments.
Signal input connection is provided by convenient
accessories. The Model 5340A Tee-Adapter for 50
ohm systems uses "N" connectors and provides
minimum VSWR matching to beyond 1.2 GHz. A
100:1 capacitive divider probe tip, Model 1340A
provides operation to 300 V rms and extends true RMS
measurement from 30 mV to 3 V. Coaxial adapter
Model 2340A permits the probe to be connected to N
and BNC connectors. Model 6340A adapter provides
a one watt 50 ohm termination for the probe when used
with BNC for N connectors and is usable beyond 600
MHz. For less demanding application the Model
4340A provides a probe tip for in-circuit measurements
below 100 MHz.
1-2. SPECIFICATIONS FOR MODEL 3440A.
1-2.1 Frequency Range:
Calibrated 10 kHz to 1.2 GHz; usable <10 kHz to >2.4
GHz; usable <10 to >2.4 GHz.
1-2.2 Response:
True RMS to 30 mV, changing gradually to peak
detector calibrated in rms of a sine wave above 30 mV.
1-2.3 Range:
Usable: < 100 µV to 30 V rms.
Eight ranges selected by front panel switch:
100 µV to 1 mV FS
3 mV FS
10 mV FS
30 mV FS
100 mV FS
300 mV FS
1 V FS
3 V FS
(-70 dBm to -50 dBm)
(-40 dBm)
(-30 dBm)
(-20 dBm)
(-10 dBm)
(0 dBm)
(+10 dBm)
(+20 dBm)
-70 dB to +60 dB to 700 MHz with optional accessory
Model 1340A 100:1 divider.
dB readings are referenced to 0.221 V (0 dBm, 1 mW
into 50 ohms.)
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Section 1. General Information
page 1-2
1-2.4 Crest Factor:
Range 1mV 3mV 10mV 30mV
Crest
Factor* 420 to 42 42 to 14 14 to 4.2 4.2 to 1.4
With 100:1 Divider
Range 0.1 V 0.3 V 1 V 3 V
Crest
Factor* 420 to 42 42 to 14 14 to 4.2 4.2 to 1.4
*Maximum permissible ratio of peak to rms value of
voltage
1-2.5 Accuracy (Frequency Effects):
The maximum uncertainty is the sum of frequency
effects and temperature effects.
Range Frequency
(FS) 10 kHz to
150 MHz 150 MHz to 700
MHz
700 MHz
to 1.2
GHz
100 mV to
300 mV ±(1% FS + 1% Ind) ±(1% FS + 5% Ind) ±(1% FS + 12% Ind)
1 V to 3 V ±(1% FS +
1% Ind) ±(1% FS + 5% Ind) ±(1% FS + 12% Ind)
Note: FS = full scale; Ind= indication
*At 1 mV and below add ±1% FS
Ref. conditions: 20 to 25°C, 10 min warm-up
Measurements are referenced in 50 ohm systems using
the Ballantine 34402A probe with Model 5340A Tee
adapter and Ballantine 31-10189-1 precision 50 ohm
termination. Voltage is measured at the input
connector of the tee.
VSWR: 1.1 to 300 MHz, 1.2 to 1 GHz, and 1.3 to 1.2
GHz.
1-2.6 Temperature Effects (at 1 MHz):
A heater system in the detector probe maintains
detector temperature in the range of 23° to 28°C at all
ambient temperatures to 0°C.
Ambient With Probe
Heater Set To
25°C
With probe
heater set to
35°C
30°C to 40°C Add ±4% of
indication Add ±3% of indication
25°C to 30°C Add ±1% of
indication Add +0.5% of indication
10°C to 15°C Add ±1% of
indication Add ±1% of indication
0°C to 10°C Add ±4% of
indication Add ±4% of indication
1-2.7 Meter:
The instrument incorporates an analog meter for
readout. Three scales and antiparallax mirror are
provided. The 0 to 10 scale is uppermost and is 4.4
inches long. The 0 to 3 scale is below, followed by a -
10 to +3 dBm scale. dBm reference is .221 V equals 0
dBm (0 dBm = 1 mW into 50 ohms).
1-2.8 Indicator unrest: (1 mV FS range only)
Unrest of the meter pointer will be < ±1% FS above
uV indication, <±2% FS between 300 and 600 uV and
< ±5% FS from 100 µV to 300 µV.
1-2.9 Response Time and Overload Recovery:
Less than 1 second meter response on 3 mV to 3 V
ranges, increasing to 3 seconds rise time on 1 mV
range. The instrument recovers within 10% of final
indication within one minute after removing 3 V (rms)
overload on 1 mV range. A response switch permits
selection of slow or normal response times when
measuring input signals having time varying amplitude
components.
1-2.10 Detector Probe:
A detachable probe containing the RF detector is
provided. The shielded probe’s cable is 4 feet (1.2
meters) long and terminated in a quick disconnect
locking connector at the front panel. A Ground Clip
Lead is provided with the probe.
1-2.11 Probe Input Impedance:
Typical values measured at 21° to 25°C with probe
heater set to 25°C. Option 40 provides probe
(34403A) using diodes with equal capacitance and
higher input resistance limits.
1-2.12 Probe Input Shunt Capacitance at 100 kHz:
0 mV 2.8 pF
30 mV 2.7 pF
100 mV 2.5 pF
300 mV 2.3 pF
1 V 2.0 pF
3 V 1.8 pF
1-2.13 VSWR:
VSWR using probe with non-loading "T" connector in
a 50 ohm system is no greater than 1.3 from 10 kHz to
1.2 GHz.
1-2.14 Power Sensitivity:
Probe shall not require more than 1.8 nW of input
power at 300 µV input voltage when used with a non-
loading "T" connector in a 50 ohm system.
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Section 1. General Information
page 1-3
1-2.15 Over Voltage:
Probe input is fully protected to 10 V ac on all ranges
and frequencies. Maximum dc input is ±400 V on all
ranges.
1-2.16 DC Recorder Output:
Rear panel banana jacks provide +1 V dc full scale
deflection on "10" ranges and .948 V on "3" ranges
into an open circuit. Source impedance is 1000 ohms
(±5%). DC output is short circuit proof. DC output
amplitude may be adjusted by a control accessible from
the rear panel. The dc recorder output voltage is
directly proportional to the meter deflection and the
rms of the probe input voltage. The DC Recorder
Output serves as an ac to dc converter.
1-2.17 Probe Balance:
A probe null balance (meter zero) control knob is
provided on the front panel. It permits meter zero
adjustment on the most sensitive ranges when no input
signal is present.
1-2.18 Relative References:
A REL REF control on the front panel allows
continuously variable reduction of sensitivity by a
minimum of 3.3 dB. It permits 0 dB reference level
change and is useful in setting the meter to
conveniently make readings when performing relative
dB measurements. A detented CAL position is
provided for normal measurements.
1-2.19 Meter Response Time:
1 second rise time on all ranges except 3 seconds on
the 1 mV range. A NORMAL/SLOW response switch
permits selection of meter response time for stable
measurements of input signals with varying
amplitudes.
1-2.20 Environmental Characteristics:
Temperature: Oper.: 0°C to +50°C, Stor. : -54°C to
+85°C
Humidity: (No condensation) 80% RH to 50°C, 95%
RH to 35°C
Altitude: Oper.: to 3 km (10,000 ft), Stor.: to 15 km
(50,000 ft)
Shock and Vibration: Complies with MIL-T-28800
Class 3, Style E.
EMI: Meets requirements of MIL-STD-461A for CS-
01, CS-06 and RS-03 to 400 MHz at 1 V/meter. There
is no discernible radiated or conducted RF leakage
from the instrument, the probe cable, or the probe.
1-2.21 Safety:
Meets conditions of MIL-T-28800, Class 3, Style E.
1-2.22 Power:
A fused power selector safety switch and receptacle on
the rear panel selects one of two ac operating voltage
ranges.
Hz,
108 to 132 V (115 V) 48 to 420 Hz
216 to 264 V (230 V) 48 to 420 Hz
Input Power: 10 VA maximum
With Option 05 - Internal rechargeable battery
Running Time: 8 hours
Rechargeable Time: 16 hours (20 hours maximum)
1-2.23 Dimensions:
Case Overall
Height 133 mm (5.25”) 147 mm (5.8”)
Width 211 mm (8.3”) 220 mm (8.66”)
Depth 280 mm (11”) 305mm (12”)
The case is all-aluminum with sturdy side extrusions,
front and rear die castings and quick disconnect top
and bottom covers. It includes a tilt bail and a side
mounted carry handle.
Weight: 3 kg (6.6 lbs) Net, 5.2 kg (11.5 lbs) Shipping
1-3. SPECIFICATIONS FOR OPTION 40
(USING PROBE 34403A)
1-3.1 Accuracy (Frequency Effects):
The maximum uncertainty is the sum of frequency
effects and temperature effects.
Range Frequency
(FS) 10 kHz to
100 MHz 100 MHz to 1.0
GHz
1.0 GHz
to 1.2
GHz
100 mV to
300 mV ±(1% FS + 1% Ind) ±(1% FS + 3% Ind) ±(1% FS + 7% Ind)
1 V to 3 V ±(1% FS +
1% Ind) ±(1% FS + 3% Ind) ±(1% FS + 10% Ind)
Note: FS = full scale; Ind= indication
* At 1 mV and below add ±1% FS
Ref. conditions 20 to 25°C, 10 minutes warm-up
Measurements are referenced in 50 ohm systems using
the Ballantine 34403A probe with Model 5340A Tee
adapter and Ballantine 31-10189-1 precision 50 ohm
termination.
Voltage is measured at the input connector of the tee.
N8AUM

Section 1. General Information
page 1
-
4
Calibrated 10
Hz to 100 MHz; usable to >1.2 GHz.
The maximum uncertainty is the sum of frequency
effects and temperature effects.
Note:
FS = full scale; Ind = indication
* At 1 mV and below add ±1% FS
Ref
.
conditions 20 to 25°C, 10 minutes warm
-
up
Measurements are re
ferenced in 50 ohm systems using
the Ballantine 89
-
11657
-
1 probe with Model 5340A
Voltage is measured at the input connector of the tee.
Tee adapter and Ballantine 31
-
10189
-
1 precision 50
ohm termination.
Several o
ptions are available for the Model 3440A.
Desired options may be specified at time of purchase.
Contact your Ballantine representative for additional
i
nformation and availability
.
T
he
following
t
able
defines
the modifications,
option
a
nd accessories
.
.
3440A
-
STD
10KHz to 1.2 GHz m
i
l
livoltmeter
without
probe and accessories
3440A
3
440A
-
S
TD
with 4340A, 6340A, 34402A
3440A
-
M111
3440A with 34401A Kit
3440A
-
M113
3440A-M111,Substitute Probe 34403A
-
05
Rechargeable Internal Battery
-
40
Substitute Hi Precision Probe 34403A
-
41
Substitute Low Frequency Probe 34404A
1340A
100:1 Capacitive Divider for Probe
2340A
Non
-
Loading Probe Adapter for N & BNC
4340A
Probe Adapter, Spring
Tip w/Grd Clip
5340A
Tee
-
Adapter, Use w/50
Coax, Type N
6340A
50
Terminating Adapter, BNC & Type N
31
-
10189
-
1
50
Precision N Term. Use with 5340A
34401A
Kit: 1340A, 2340A, 5340A,31
-
10189
-
1 and 89
-
11103
-
1
34402A
Standard Probe, 10 kHz to 1.2 GHz
34403A
High Precision Probe, 10 kHz to 1.2 GHz
34404A
Low Frequency Probe, 10 Hz to 100 MHz
89
-
11103
-
1
Storage Case for Accessories
S
ee Fig. 1
-
1
a
and 1
-
1
b
f
or the accessories images.
100 mV to
300 mV
±(1% FS
+ 1% Ind)
±(1% FS
+ 3% Ind)
±(1% FS
+ 7% Ind)
1 V to 3 V
±(1% FS
+ 1% Ind)
±(1% FS
+ 3% Ind)
±(1% FS
+ 10%
Ind)
1
-
4.
ADDITIONAL SPECIFICA
TIONS FOR
THE OPTION 41 LOW FR
EQUENCY RF
PROBE (P/N
3
4404A
):
1
-
4.1
Frequency Range:
1
-
4.2
Accuracy (Frequency Effects):
1
-
5.
MODIFICATIONS,
OPTIONS
AND
ACCESSORIES.
Model
Description
Range
(FS)
Frequency
10 kHz to
150 MHz
150 MHz
to 700
MHz
700 MHz
to 1.2
GHz
Options
Accessories
Ω
Ω
Ω
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Section 1. General Information
page 1
-
5
N8AUM

INSTALLATION
2-1. INTRODUCTION
This section contains information and instructions
necessary for the installation and shipping
of the
Model 3440A series Voltmeters. Details are
provided for initial inspection, power connection,
grounding safety requirements, installation
information, and repacking instructions for storage
or shipment.
2-2. UNPACKING AND INITIAL
INSPECTION
Unpacking and handling of the voltmeter requires
only the normal precautions and procedures
applicable to the handling
of sensitive electronic
equipment. The contents
of all shipping containers
should be checked for included accessories and
certified against the packing slip to ascertain that
the shipment
is complete.
2-3. PERFORMANCE CHECKS
This instrument wa:, carefully inspected for
mechanical and electrical performance before
shipment from the factory.
It should be free of
physical defects and in perfect electrical order upon
receipt. Check the instrument for damage
in transit
and perform the electrical procedure outlined
in
paragraph 5-9. If there is indication of damage or
deficiency see the warranty
in this manual and
notify your local Ballantine field engineering
representative or the factory.
CA UTION: It is recommended that the
operator be fully familiar with the
specifications and all sections of this
manual. Failure to do so may
compromise the warranty and the
accuracy which Ballantine has
engineered into your instrument.
2-4. POWER REQUIREMENTS
The instrument may be operated from anyone of
the following ac sources:
a. 90 to 100 V(100 Vnominal)
b. 108 to 132 V(120 Vnominal)
c. 198 to 242 V(200 Vnominal)
d. 216 to 264 V(240 Vnominal)
e. All instruments operate over the power
frequency range
of 48 to 440 Hz. Always verify
that the operating line voltage
is the same as that
specified on the rear panel power receptacle switch
plug. See Figure 2-1.
Section
2. Installation
CAUTION: Failure to switch the
instrument to match the operating line
voltage will damage the instrument
and may voidthe warranty.
f. Internal rechargeable battery power supply;
(Optional) Option 05. Abattery and charger are
installed in the voltmeter. Afully charged battery
will operate the instrument for 8hours. When
operating
on internal batteries, the pilot lamp also
indicates power ON operation and
is illuminated to
act as abattery charge indicator as long as
sufficient battery charge
is available to power the
instrument.
2-5. GROUNDING
REQUIREMENTS
To insure the safety of operating personnel, the
U.S. O.S.H.A. (Occupational Safety and Health)
requirement and good engineering practice mandate
that the instrument panel and enclosure be "earth"
grounded. All Ballantine instruments are provided
with an Underwriters Laboratories (U.L. and
C.S.A.) listed three-conductor power cable, which
when plugged into an appropriate power receptacle,
grounds the instrument. The long offset pin on the
male end
ofthe power cable carries the ground wire
to the long pin
of the Euro connector (DIN
standard) receptacle on the rear panel
of the
instrument.
To preserve the safety protection feature when
operating the instrument from atwo-contact outlet
use athree-prong to two-prong adapter and
connec~
the green lead on the adapter to an "earth" ground.
2-6. INSTALLATION AND
MOUNTING
The instrument is fully solid state and dissipates
minimal power. No special cooling
is required.
However, the instrument should not be operated
where the ambient temperature exceeds 55°C
(131°F), when the relative humidity exceeds 95%
or condensation appears anywhere on the
instrument.
2-7. BENCH MOUNTING
The instrument is shipped with plastic feet and tilt
stand
in place and ready for use as abench or
portable instrument. See outline drawing Figure 2-2
for dimensions.
2-8. SHORT T]~RM STORAGE
If the instrument is to be stored for ashort period of
time (less than three months) place cardboard over
page
2-1
N8AUM

Section 2. Installation
the panel, and cover the instrument with suitable
protective covering such
as aplastic bag or strong
craft paper.
If the instrument incorporates a
rechargeable battery (Option 05); first, fully charge
the battery. Place power cable and other
accessories with the instrument. Store the covered
voltmeter
in aclean dry area that is not subject to
extreme temperature variations or conditions which
may cause moisture to condense on the instrument.
2-9. LONG TERM STORAGE OR
REPACKAGING FOR SHIPMENT
If the instrument is to be stored for along period or
shipped, proceed as directed below.
If you have
any questions contact your local Ballantine field
engineering representative or the Ballantine Service
Department at the factory.
If the original Ballantine supplied packing is to be
used proceed as follows:
a. If the original wrappings, packing material
and container have been saved, repack the
instrument and accessories originally shipped to
you.
If the original container is not available, one
may be purchased through the Ballantine Service
Department at the factory.
b. Be sure the carton is well sealed with strong
tape or metal straps.
c. Mark the carton with the model number and
serial number with indelible marking.
If it is to be
shipped, show sending address and return address
on two sides
of the box; cover all previous shipping
labels.
If the original container is not available, proceed as
follows: (See Figure 2-4).
a. Before packing the unit, place all accessories
into ap'lastic bag and seal the bag.
b. For extended storage or long distance
shipping only, use U.S. Government packaging
method II Cand tape atwo-unit bag
of desiccant
(per MIL-D-3464) on the rear cover.
c. Place a 13 cm (5 inch) by 20 cm (8 inch)
piece
of sturdy cardboard over the front panel for
protection.
d. Place the voltmeter into aplastic bag and
NOTE: DIMENSIONS ARE IN INCHES AND (MILLIMETERS).
11.83
-------- (300) ----.l
___ .10.52
(267)
5.21
(132)
.07 typo
( I )
5.81
(147)
• I
---*-
page 2-2
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seal the bag.
e. Wrap the bagged instrument and accessories
in one inch thick flexible cellular plastic film
cushioning material (per PPP-C-795) and place
in a
barrier bag (per MIL-B-131). Extract air from bag
and heat seal.
f. Place bagged in:;trument and accessories into
a250 mm (10 inch) x200 mm
(8 inch) x310 mm
(12 inch) fiber board box (per PPP-B-636 type CF,
class WR, variety SW, grade V3C). Fill additional
spaces with cushioning material. Close box
in
accordance with container specifications. Seal with
sturdy water resistant tape or metal straps.
g. Mark container "DELICATE
INSTRUMENT", "FRAGILE", ETC. Mark
Packing
Instructions
Section
2. Installation
instrument model and serial number and date of
packaging. Affix shipping labels as required or
mark according to MIL-STD-129.
NOTE: If the instrument is to be
shipped to Ballantine
for calibration
or repair, attach atag to the
instrument identifYing the owner.
Note the problem, the symptoms,
and
service or repair desired. Record the
model and serial number
of the
instrument. Show the work
authorization order as well
as the date
andmethod
of shipment.
RUB8ERIZED HAIR OR CELLULAR
~..---- P'AST'C "'M CUSH'O.'.G.
<:::>
l"LEXIBlE CELLULAR PLASTIC FILM
_ CUSHIONING (PER PPP-C-795l
~~~""'-'-' ..... ~ ......... '-.-.....,,-,,",, .,..-;.1..,,"-":.1
4
... 0------ ONA~LSIDES.
~ ACCESSORIES IN SEALED PLASTIC
."" •• <.,~~""'
OESICCANT.2UNITBAG . . . •.... " FOR PROTECTION,covER FRONT OF
'PER Moe-D-"'" rtLlJ ~.. .... .... ... ... .. M'RuMEN' W'TH STuRD' CARoeOAR"
\ ..••••• ':0 SEALED PLASTIC BAG
t
~ FLEXIBLE CELLULAR PLASTIC FILM
C:) s::::. CUSHIONING (PER PPP-C-1951 ON
Cjc::5 ~ ALL SIDES.
=",,,,
CbC)0g' <:)
o
gas BARRIER SAG (PERMIL-B-!3JJ
~ EXTRACT A'R AND HEAT SEAL.
FiBERBOARD BOX I PER PPP-B-636)
SEAL 80X WITH STURDY WATER-RESls·rANl
TAPE OR METAL METAL STRAPS.
c
'AUBBER1ZIEO HAIR OR CELLULAR PLASTIC
CUSHIONING ON ALL SIDES AlliD
ADDITIONAL SPACES
MARK CONTAINER "FRAGILE ," ·OELICATE
INSTRUMENT,"ETC. AfFIX SHIPPING LtlBELS
AS REOUIRED OR MARK ACcoRDING TO
MlvSTO-129
page 2-3
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Section 2. Installation
TABLE 2-1. SAFETY CONSIDERATIONS
SAFETY CONSIDERATIONS
GENERAL
This is aSafety Class 1instrument. This instrument has been designed considering IEC Publication
348 and ANSCI C39.5, "Safety Requirements for Electronic Measuring Apparatus".
The manual contains information, cautions, and warnings which must be followed by the service
person to ensure safe operation and to retain the instrument
in safe condition.
WARNINGS
SAFETY
If this instrument is to be energized via an autotransformer for voltage reduction, make sure the
common terminal
is connected to the earthed pole of the power source.
BEFORE SWITCHING ON THIS INSTRUMENT, the protective earth terminals
of this instrument
must be connected to the protective conductor
of the (mains) power cord. The mains plug shall only
be inserted
in asocket outlet provided with aprotective earth contact. The protective action must not
be negated by the use
of an extension cord (power cable) without aprotective conductor (grounding).
Make sure that only fuses with the required rated current and of the specified type (normal blow, time
delay, etc.) are used for replacement. The use
of repaired fuses and the short-circuiting of fuse holders
must be avoided.
Whenever
it is likely that the protection offered by fuses has been impaired, the instrument must be
made inoperative and be secured against any unintended operation.
GROUNDING
Any interruption of the protective (grounding) conductor (inside or outside the instrument) or
disconnecting the protective earth terminal
is likely to make this instrument dangerous. Intentional
interruption
is prohibited.
HIGH VOLTAGE
Warning -These servicing instructions are for use by qualified personnel only. To avoid dangerous
electric shock, do not perform any servicing other than that contained in the operating instructions
unless you are qualified to do
so.
CAUTIONS
LINE VOLTAGE SELECTION
BEFORE SWITCHING ON THIS INSTRUMENT, make sure the instrument is set to the voltage of
the power source. Verify that the power transformer primary is matched to the available line voltage.
Verify that the correct fuse
is installed.
GROUNDING
BEFORE SWITCHING ON THIS INSTRUMENT, ensure that all devices connected to this
instrument are connected to the protective (earth) ground. (Grounding one conductor
of atwo-
conductor outlet
is not sufficient.
page 2-4
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OPERATING INSTRUCTIONS
3-1. INTRODUCTION
This section contains instructions and information
required for the operation
of the Ballantine 3440
Series
of RF Millivoltmeters. Included are
identification
of controls, connectors, options and
indicators as well as turn on procedures and
operating instructions.
3-2. CONTROLS, INDICATORS AND
CONNECTORS
The instrument controls, indicators, and
connectors are described in Table 3-
I.
3-3. METER MECHANICAL ZERO
ADruSTMENT
The mechanical meter zero adjustment is a
screwdriver adjustment located
in the center of the
meter
just below the scale. If the meter pointer
does not indicate zero after the voltmeter power
has been
off for aminute or longer, mechanically
zero the meter as indicated below:
a. The meter mechanical adjustment screw is
located centrally on the meter and below the scale.
Rotate the screw CLOCKWISE until the meter
pointer
is to the left of zero on the voltage scale
and moving upscale toward zero. Be sure the
instrument
is in its normal operating position.
b. Continue to turn the adjustment screw
clockwise and STOP when the meter pointer
is
precisely on the zero mark. If the meter needle
goes beyond zero, repeat step
a.
c. When the meter pointer is precisely over
the zero mark, turn the adjustment screw slightly
counterclockwise to back
off the tension on the
meter taut-band suspension.
If the pointer moves
to the left, repeat all the above steps, but use less
counterclockwise rotation.
3-4. POWER Rl~QUIREMENTS
a. AC Line Voltage Power. If ac line voltage
power
is used, be sure that the Voltage Selector
Switch on the rear panel
is in the correct position.
CAUTION: Failure to have the
Voltage Selector Switch in the correct
position can cause serious damage to
your instrument and may void the
warranty.
Section 3. Operating Instructions
b. Turn the POWER toggle switch to ON and
note that the pilot lamp lights.
WARNING: Be sure to connect the
case of the instrument to earth ground
through the power cable or faulty
measurements and possible shock
hazardmay result.
c. Internal Battery (Option 05). If the optional
rechargeable NiCad battery pack
is installed in the
instrument, simply turn the POWER toggle switch
to ON and note that the pilot lamp lights when
power
is applied.
NOTE: The pilot lamp serves as a
battery charge indicator. If it glows
dimly or does not light when the
POWER toggle switch is turned to
ON, providing the power cord is
disconnected, it indicates that the
battery is discharged.
d. To recharge the battery, (which should
always
be done after shipment or storage) power
the instrument from the ac line and set the
POWER switch
on the front panel to the BAT.
CHGE. position. Allow
16 hours to fully recharge
adischarged battery.
e. Afully charged battery will power the
instrument for over 8hours. The 3440A cannot be
used for measurements while
in the BAT. CHGE.
position. Although, with the battery fully
discharged, it can still be operated from the ac line
without any degradation
of accuracy. When
powered from the ac line, the battery will receive a
trickle charge to keep it
in afully charged state. If
the need should arise, the 3440A may be operated
with the battery removed.
CA UTION: The internal battery
should not be charged continuously or
its life may be shortened. Avoid
charging for more than 20 continuous
hours.
page 3-1
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