EZ Digital FG-7002C Manuel utilisateur
G
FG-7002C/5C
2MHz/5MHz
SweepFunctionGenerator
OperationManual
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BENCH-TOPINSTRUMENT
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WARRANTY
Warranty service covers a period of one year from the date of original purchase.
In case of technical failure within one year, our service center or sales outlet free of
charge will provide repair service.
We charge customers for repair after the one-year warranty period has been
expired. Provided that against any failure resulted from the user’s negligence,
natural disaster or accident, we charge you for repairs regardless of the warranty
period.
For more professional repair service, be sure to contact our service center or sales
outlet.
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Introduction
Thank you for purchasing our product, electronic measuring instruments
produced by us are high technology products made under strict quality control. We
guarantee their exceptional precision and utmost reliability. For proper use of the
product, please read this operation manual carefully.
Note
1. To fully maintain the precision and reliability of the product use it within the range
of standard setting (temperature 10 qC~35 qC, humidity 45%~85%)
2. After turning of power, please allow a pre-heating period of as long as some 30
minutes before use.
3. This equipment should be used with a triple line power cord for safety.
4. For quality improvement the exterior design and specification of the product can
be changed without prior notice.
5. If you have further questions concerning use, please contact our service center
or sales outlet
Safety Summary
Please take a moment to read these operating instructions thoroughly and
completely before operating this instrument. Pay particular attention to WARNINGS
used for conditions and actions that pose hazard to the user and CAUTIONS used
for conditions and actions that may damage the instrument.
zAlways to inspect the instrument and other accessories for any sign of damage
or abnormality before every use.
zNever ground yourself and keep your body isolated from ground.
zNever touch exposed wiring, connections or any live circuit conductors.
zDo not install substitute parts or perform any unauthorized modification to the
instrument.
zUse caution when working above 60V DC or 30V AC rms. Such voltages pose
a shock hazard.
zRemember that line voltage is present on some power input circuit points such
as on-off switches, fuse, power transformers, etc., even when the equipment is
turn off.
zAlso, remember that high voltage may appear at unexpected points in defective
equipment.
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Safety Symbols
1. Protective earth (ground)
To identify any terminal which is intended for connection to
an external conductor for protection against electric shock
In case of a fault, or the terminal of a protective earth
(ground) electrode.
2.Functional earth terminal on the rear panel.
3 “IN” position of a bi-stable push control
To associate the “IN” position of a bi-stable push control
with the corresponding function.
4. “OUT” position of a bi-stable push control
To associate the “OUT” position of a bi-stable push control
with the corresponding function.
5. Alternation current
To indicate on the rating plate that the equipment is
Suitable for alternating current only to identify relevant
terminals.
6. Caution, risk of danger
7. Caution, risk of electric shock
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CONTENTS
1. PRODUCT DESCRIPTION
1-1. Introduction ----------------------------------------------------------------- ( 6 )
1-2. Technical Specifications ------------------------------------------------- ( 6 )
1-3. Equipment Ratings -------------------------------------------------------- ( 8 )
1-4. Supplied Accessories ---------------------------------------------------- ( 8 )
2. INSTALLATION
2-1. Initial Inspection ----------------------------------------------------------- ( 9 )
2-2. Connecting Ac Power ---------------------------------------------------- ( 9 )
2-3. Cooling And Ventilation -------------------------------------------------- ( 9 )
2-4. Position ---------------------------------------------------------------------- ( 9 )
2-5. Warming-Up ---------------------------------------------------------------- ( 9 )
3. OPERATION
3-1. Controls, indicators and connectors ---------------------------------- ( 10 )
3-2 2. Operating instruction -------------------------------------------------- ( 13 )
3-3. Use As Function Generator --------------------------------------------- ( 13 )
3-4. Use As Pulse Generator ------------------------------------------------- ( 16 )
3-5-1. TTL/CMOS Output ----------------------------------------------------- ( 18 )
3-5-2. TTL/SYNC Output ----------------------------------------------------- ( 19 )
3-6. Use As FM Signal Generator ------------------------------------------- ( 19 )
3-7. External Control Of VCF ------------------------------------------------- ( 21 )
3-8. Programmed Frequency Selection ------------------------------------ ( 22 )
3-9. Use As Sweep Generator ----------------------------------------------- ( 22 )
3-10. Use As Externally Controlled Sweep Generator ----------------- ( 23 )
3-11. Use As External Frequency Counter -------------------------------- ( 23 )
4. MAINTENANCE
4-1. Fuse Replacement -------------------------------------------------------- ( 25 )
4-2. Adjustment And Calibration --------------------------------------------- ( 25 )
4-3. Cleaning and decontamination ----------------------------------------- ( 25 )
5. OTHERS
5-1. Introduction ----------------------------------------------------------------- ( 25 )
5-2. Troubleshooting By Signal Substitution ------------------------------ ( 26 )
5-3. Troubleshooting By Signal Tracing ----------------------------------- ( 26 )
5-4. Amplifier Overload Characteristics ------------------------------------ ( 27 )
5-5. Amplifier Performance Evaluation Using Square Waves -------- ( 28 )
5-6. Testing Speakers And Impedance Networks ----------------------- ( 31 )
5-7. Digital Frequency Selection --------------------------------------------- ( 32 )
5-8. Additional Applications --------------------------------------------------- ( 32 )
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1. PRODUCT DESCRIPTION
1.1. Introduction
This instrument is the Most Versatile Signal Source used as FUNCTION
GENERATOR, SWEEP GENERATOR, PULSE GENERATOR and a FREQUENCY
COUNTER, offering a wide range of applications in both analog and digital
electronics such as engineering, manufacturing, servicing, education and hobbyist
fields.
VCF(voltage controlled frequency) produces precision sine, square and triangle
waves over the 0.02 Hz to 2 MHz; FG-7002C, 0.05Hz - 5MHz; FG-7005C for sub-
audible, audio, ultrasonic and RF applications. A continuously variable DC offset
allows the output to be injected directly into circuits at the correct bias level.
Variable symmetry of the output waveforms converts the instrument to a pulse
generator capable of generating rectangular waves or pulses, ramp or sawtooth
waves and skewed sine waves of variable duty cycle. The sweep generator offers
linear sweep with variable sweep rate and sweep width up to 100:1 frequency
change. The frequency response of any active or passive device up to Maximum
frequency of each model can be determined.
1-2. Technical Specifications
OUTPUT CHARACTERISTICS
Waveforms : Sine, Square, Triangle, Skewed Sine, Pulse, Ramp
Sawtooth, TTL Leveled Square, DC
CMOS Leveled Square(FG-7002C only)
Frequency Range : In 7 Range (1, 10, 100, 1K, 10K, 100K,1M)
FG-7002C; 0.02 Hz to 2 MHz
FG-7005C; 0.05 Hz to 5 MHz
Frequency Drift Accuracy: ±2% (1, 10, 100, 1K, 10K, 100K,1M Range )
Output Level : 20 Vpp in open circuit, 10 Vpp into 50 :Load
Output Impedance : 50 :±5%
Attenuator : 20 dB fixed and continuously variable
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WAVEFORM CHARACTERISTICS
Sine wave -Flatness : ±3dB to 2MHz(FG-7002C),
5MHz(FG-7005C)
-Distortion : Less than 1% at 0.2 Hz to 100 KHz
Square wave -Rise and Fall Time : Less than 120 nS
Triangle wave -Linearity : More than 99% at 0.2 Hz to 100 KHz
TTL Output -Rise and Fall time : Less than 25 nS
-Output Level : TTL Level(H 2.4V, L 0.4V)
CMOS Output -Rise and Fall Time : Less than 160 nS(Max. Out)
(FG-7002C only) -Output Level : 4V to 15V ±2V, Variable
DUTY RATIO : 1:1 to 10 : 1
SWEEP FUNCTION CHARACTERISTICS
Mode : Linear
Width : Variable from 1 : 1 to 100 : 1
Rate : 0.5 Hz to 50 Hz (20 mS to 2 S)
External VCF Input :
Input Voltage : 0 to 10 V
Input Impedance : Approx. 1K:
FREQUENCY COUNTER CHARACTERISTICS
Display :
FG-7002C: 6 digit green LED, Gate time, MHz, KHz, Hz, mHz.
FG-7005C : 7 digit green LED, Gate time, MHz, KHz, Hz, mHz.
Frequency Range :
FG-7002C: 200 mHz to 50 MHz With Auto Range.
FG-7005C : 200 mHz to 100 MHz With Auto Range.
Accuracy : ±Time base Error ±1 count
Time base : 10 MHz Crystal, ±20ppm
Input Sensitivity : 100 mVrms
Max. Input Voltage : 250 Vpp
DIMENSION AND WEIGHT
Dimension : 240(W)x 270(D) x90(H)mm
Weight : Approx. 2.0Kg(FG-7002C), 3.0kg(FG-7005C)
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1-3. Equipment Ratings
zPower & Fuse Ratings
Input Voltage Fuse Power Max.
115VAC +/-10%, 50/60Hz F 0.5A 250V 15W
230VAC +/-10% , 50/60Hz F 0.2A 250V (FG-7002C)
F 0.25A 250V (FG-7005C) 15W
NOTE: AC Power is preset to 115V or 230V in factory according to the request
of customer. AC Power can be selected inside of unit.
zOperating Environment
TEMPERATURE: 0 °C to + 40 °C (Accuracy Specified at 23°C±5 °C)
HUMIDITY :up to 85% to 40°C without temperature extremes
causing condensation within the instrument.
zStorage Environment
TEMPERATURE: -20°C to +70°C
HUMIDITY : below 85% RH
zOvervoltage Category : CAT II,
Performed on circuits directly connected to the low voltage installation.
zInsulation Category II: Portable equipment of local level.
zPollution Degree : 2
zProtection to IEC 529: Ordinary
1-4. Supplied Accessories
zUser’s Manual ---------------------------------------------------------------------------- 1
zBNC Cable ------------------------------------------------------------------------------ 1
zPower Cord ------------------------------------------------------------------------------ 1
zSpare Fuse ------------------------------------------------------------------------------- 1
** Specifications are subject to change without notice.
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2. INSTALLATION
2-1. Initial Inspection
This instrument was carefully inspected both mechanically and electrically before
shipment. It should be physically free of damage. To confirm this, the instrument
should be inspected for physical damage in transit. Also, check for supplied
accessories are present and correct.
2-2. Connecting AC Power
CAUTION
AC POWER OF THIS INSTRUMENT IS PRESET TO 115V OR 230V IN FACTORY
ACCORDING TO THE REQUEST OF CUSTOMER. BEFORE POWERING ON
THIS INSTRUMENT, CHECK AND MAKE SURE THE VOLTAGE OF THE
POWER SOURCE IS SAME WITH THE MARKING OF UNIT.
This instrument requires 230V AC or 115V AC (50-60 Hz) power socket with
protective earth contact (PE-contact). If is available only a power socket without PE-
contact (so a 2-conductor ac power) then a power socket with PE-contact must be
installed before or the appliance should be provided with a PE-screw-terminal which
is not soluble by hand and not soluble before 2-conductor power lines.
2-3. Cooling and Ventilation
No special cooling and ventilation is required. However, the instrument should be
operated where the ambient temperature is maintained.
2-4. Position
This instrument is built as a bench-type instrument with rubber feet and tilt stand
in place. Stand-up angle can be adjusted by rotating angle of carrying handle.
2-5. WARMING-UP
Allow more than 30 minutes for the unit to warm up so that it is stabilized and ready
for use.
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3. OPERATION
3-1. Controls, indicators and connectors
FIG 1-1. FRONT PANEL OPERATOR’S CONTROLS(FG-7002C)
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FIG 1-2. FRONT PANEL OPERATOR’S CONTROLS(FG-7005C,)
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