EC Declaration of Conformity

EC Declaration of Conformity
EC Declaration of Conformity
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
TABLE OF CONTENTS
1.
SAFETY SUMMARY……………………………………………..
1
2.
INTRODUCTION…………………………………………………
5
3.
SPECIFICATION…………………………………………………
7
4.
FUNCTION DESCRIPTION.…………………………….………
11
5.
USAGE DESCRIPTION………………………………….………
14
6.
MAINTENANCE………………………………………….………
19
EN 61326-1: Electrical equipment for measurement, control and laboratory use ––
EMC requirements (1997+A1: 1998)
Conducted and Radiated Emissions
Electrostatic Discharge
EN 55011 Group I class A: 1991
EN 61000-4-2: 1994
Current Harmonic
Radiated Immunity
EN 61000-3-2: 1995
ENV 50140: 1993
Voltage Fluctuation
Electrical Fast Transients
EN 61000-3-3: 1995
EN 61000-4-4: 1995
Surge Immunity
EN 61000-4-5: 1995
Conducted Susceptibility
EN 61000-4-6: 1996
Power Frequency Magnetic field
EN 61000-4-8: 1993
Voltage Dips/ Interrupts
EN 61000-4-11: 1994
Low Voltage Equipment Directive 73/23/EEC & amended by 93/68/EEC
Safety Requirements
EN 61010-1: 1990+A1: 1992+A2: 1995; IEC 61010-1: 1990+A1: 1992+A2: 1995
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
1. SAFETY TERMS AND SYMBOLS
DANGER High Voltage
Please take a moment to review these safety terms and symbols,
which may appear in this manual or on Equipment to prevent damage
to the Function Generator.
ATTENTION refer to Manual
WARNING. Warning statements identify condition or
practices that could result in injury or loss of life.
Protective Conductor Terminal
CAUTION. Caution statements identify conditions or
practices that could result in damage to this product or
(Ground) Earth Terminal
other property.
Frame or Chassis Terminal
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FOR UNITED KINGDOM ONLY
NOTE: This lead/appliance must only be wired by
competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in
accordance with the following code:
Green/ Yellow: Earth
Blue:
Neutral
Brown:
Live (Phase)
As the colours of the wires in main leads may not correspond
with the colours marking identified in your plug/appliance,
proceed as follows:
The wire which is coloured Green & Yellow must be connected
to the Earth terminal marked with the letter E or by the earth
symbol
or coloured Green or Green & Yellow.
The wire which is coloured Blue must be connected to the
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
terminal, which is, marked with the letter N or coloured Blue or
Black.
2. INTRODUCTION
The wire which is coloured Brown must be connected to the
terminal marked with the letter L or P or coloured Brown or
Red.
If in doubt, consult the instructions provided with the equipment
or contact the supplier.
This cable/appliance should be protected by a suitably rated
and approved HBC mains fuse: refer to the rating information
on the equipment and/or user instructions for details. As a
guide, cable
of 0.75mm² should be protected by a 3A or 5A fuse. Larger
conductors would normally require 13A types, depending on
the connection method used.
The 72-7710 Function Generator is a stable low distortion instrument,
which generate signals in the frequency range up to 3MHz. Typical
applications include a wide range of audio response testing applications,
vibration testing, servo system evaluation, ultra sound applications, and etc.
MAIN FEATURES
1.
Low distortion waveforms (sine, triangular and square) and ramp
2.
signal.
Signal output in seven-decade stages, 0.3Hz to 3MHz
3.
4.
Duty cycle control with signal inversion capability.
External Voltage controlled Frequency (VCF).
5.
Built in Frequency counter.
Any moulded mains connector that requires removal
/replacement must be destroyed by removal of any fuse & fuse
carrier and disposed of immediately, as a plug with bared wires
is hazardous if a engaged in live socket. Any re-wiring must be
carried out in accordance with the information detailed on this
label.
6.
7.
A second output for TTL or adjustable CMOS pulses.
50 ohm main signal output with DC offset adjustment and 20dB
8.
attenuation capability.
Supplied with two BNC test leads and AC power cord set.
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
3. SPECIFICATION
1.Main
FEATURES:
MODEL
FEATURE
72-7710
ˇ
ˇ
ˇ
ˇ
COUNTER
TTL/CMOS
VCF
Duty Cycle Control
~
≧
Ω
Ω± %
± ×
< ~>
Ω
Frequency Range
Amplitude
Impedance
Attenuator
0.3Hz 3MHz(7 Range)
10Vpp(into 50 load)
50 10
-20dB 1dB 2
-5V
5V
(into 50 load)
80%:20%:80% to 1MHz Continued variable
6 digits LED display
DC Offset
Duty Control
Display
2.Sine Wave
≦1%,0.3Hz~200kHz
<0.3dB,0.3Hz~300kHz, <0.5dB,300kHz~3MHz
Distortion
Flatness
3.Triangle Wave
Linear
≧98%,0.3Hz~100kHz, ≧95%,100kHz~3MHz
4.Square Wave
±2%,0.3Hz~100kHz
≦100ns at maximum output (into 50Ωload)
5.CMOS Output
4Vpp±1Vpp~14.5Vpp ±0.5Vpp adjustable
Level
Rise or Fall Time
≦120ns
6.TTL Output
Level
≧3Vpp
Fan Out
20 TTL load
Rise or Fall Time
≦25ns
7.VCF
Input voltage
0V~10V±1V(100:1)
Input Impedance
10kΩ±10%
Symmetry
Rise or Fall Time
8.Frequency Counter
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6
Int./Ext.
Switch selector
Range
0.3Hz 3MHz, (5Hz 150MHz EXT)
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~
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
Accuracy
±
℃± ℃
time base accuracy 1count
20ppm(23 5 ) after 30 minutes warm up
The maximum resolution is 10nHz for 1Hz and 0.1Hz for
100MHz.
1M /150pF
35mVrms(5Hz~100MHz), 45mVrms(100MHz~150MHz)
±
Time base
Resolution
Input Impedance
Sensitivity
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
≦
Ω
Fig 4.1 FRONT PANEL
≦
9.General
±
Power Source
AC115V, 230V 15%.50/60Hz
Indoor use, altitude up to 2000m.
Ambient Temperature 0 to 40 .
Operation
Relative Humidity 80%(Maximum).
Environment
Installation category II
Pollution Degree
2
Storage temperature -10 to 70 .
& Humidity
70% (Maximum).
GTL-101 2, Instruction manual 1
Accessories
Dimension
251(W) 91(H) 291(D) m/m
Approx. 2.1kgs
Weigh
℃
℃
×
WARNING
×
: To
℃
℃
×
×
avoid electrical shock, the power cord
protective grounding conductor must be connected to ground.
:
CAUTION To avoid damaging the instrument, do not use it
℃.
In a place where ambient temperature exceeds 40
:
CAUTION To avoid damaging the instrument, do not input
more than DC15V to V.C.F.(V.C.G.).
:
CAUTION To avoid damaging the instrument, do not input
more than AC150V to Frequency Counter
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
4. FUNCTION DESCRIPTION
Fig.4-2 REAR PANEL
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1.
Power Switch
Connect the AC power, then press power switch.
2.
Gate Time
Indicator
Press the power switch; Gate time indicator will start
to flash (the gate time of the internal counter is 0.01
second).
2a.
Gate Time
Selector
Press this key to change the gate time when used in the
external counter mode. The change order is according
to 0.01s, 0.1s, 1s, 10s cycle by pressing these keys.
3.
Over Indicator
In the external counter mode, the indicator is
illuminated when the output frequency is greater than
the range selected.
4.
Counter Display
Shows the external frequency by 6 × 0.3" green
display, and shows the internal frequency by 5 × 0.3"
green display.
5.
Frequency
Indicator
Indicate the current frequency value.
6.
Gate Time
Indicator
Indicate the current gate time (external. counter mode
use only).
7.
Frequency Range To select the required frequency range by pressing the
Selector
relevant push button on the panel as shown in
Table 1
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
Table 1
Push bottom
Frequency Range
1
0.3Hz
∣
3Hz
10
3Hz
100
30Hz
∣
∣
30Hz
1k
10k
300Hz 3kHz
∣
300Hz 3kHz
∣
100k
30kHz
∣
1M
300kHz
∣
30kHz 300kHz 3MHz
8.
Function Selector
Press one of the three push buttons to select the
desired output waveform.
9.
Duty Function
Pull out and rotate the knob to adjust the duty cycle of
the waveform.
10. TTL/CMOS Selector When the knob is pushed in, the BNC terminal of 16
will output a TTL compatible waveform. If pulled out
and rotated the knob can adjust the CMOS compatible
output (5-15Vpp) from the output BNC 16 .
11. DC Offset Control
12. Output Amplitude
Control with
Attenuation
Operation
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±
Pull out the knob to select a variable DC level
between 10V, turn clockwise to set a positive DC
level waveform and anticlockwise for a negative DC
level waveform.
Turn clockwise for MAX. output and invert for
a –20dB output. Pull the knob out for additional 20dB
output attenuation.
12
12a. 20dB Attenuation Press the knob to adjust a –20dB output.
13
Frequency
Adjustment
Press and turn clockwise the knob for MAX frequency
and invert for MIN frequency. (Keep the pointer within
the scale range on the panel.).
14. INT/EXT Counter Select internal counter mode (count the frequency of
Selector
model) or select EXT counter mode for an independent
counter (input signal from BNC 15 ).
15. EXT. Counter
Input Terminal
Accepts external signals for measurement.
16. TTL/CMOS
Output Terminal
TTL/CMOS compatible signal output
17. VCF/MOD
Input Terminal
Used to connect the input voltage required to perform
the “voltage control frequency” operation or the EXT
modulation operation.
18. Main Output
Terminal
Main signal output.
19. Power Switch
115V and 230V selectable.
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
5. USAGE DESCRIPTION
5-2.Triangle, square and sine wave
The 72-7710 function generator can provide versatile waveforms of high
(1) First select Function 8 , and select Range 7 , rotate FREQ
to set the required frequency. (read out from display window).
13
,
thoroughly through both this operation manual and in practice will enable
(2) Then, connect the Output 18 , to an oscilloscope to observe the output
signal, or connect to the circuit under test.
you to master the performance of this Tenma Function generator.
(3) Rotate the AMPL
efficiency. Familiarizing yourself with all of the functions of the 72-7710
One of the best ways to observe waveforms is by connecting the
instruments to an oscilloscope and watching the effect of different controls
and waveforms through the oscilloscope.
12
again to control waveform amplitude.
(4) If an attenuation output signal is required, pull out AMPL 12 knob to
obtain 20dB attenuation or press (12a) knob for additional 20dB
attenuation..
(5) The phase-relationship of the output waveform is shown in Figure 1 as
below:
5-1.First-step check:
(1) Ensure that the voltage of the main supply is compatible with this
Figure 1.
instrument. The label on the rear panel will indicate the required AC
voltage.
(2) Connect the instrument to the main supply using the power cord
supplied.
(3) Press PWR switch
1
then rotate AMPL
12
(4) Rotate the FREQ
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and ensure all the rotary controls are pushed in,
knob to make the indication point up forward.
control fully anticlockwise.
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
5-3.Pulse wave generation
(1) First press the key (
out CMOS
) Function
8
; then select Range
7
, and
rotate FREQ 13 , to set the required frequency range.
(2) Connect the output-terminal 18 to an oscilloscope to observe the
output signal.
(3) Pull out and rotate the Duty knob to adjust the width of pulse
waveform.
(5) Adjust the AMPL 12 knob to control the pulse amplitude.
(6) Pull out the AMPL
12
knob to get 20dB attenuation of output.
5-4.Ramp wave generation
(1) First press the key (
) Function
8
, then select Range
7
,
13
and rotate the FEEQ
knob to set required frequency range.
(2) Connect the output-terminal 18 to an oscilloscope to observe the
output signal.
(3) Pull out and rotate the DUTY to adjust the slope of the ramp
waveform.
(4) Adjust AMPL 12 knob to control the output amplitude of the ramp
waveform.
(5) Pull out AMPL
12
knob to obtain 20dB attenuation of output.
5-5.TTL/CMOS signal output
(1) First select Range
frequency range.
7
, rotate the FREQ
13
knob to set required
(2) Connect the BNC connector of TTL/CMOS 16 to an oscilloscope or
to the circuit under test.
(3) The output is a square waveform set to TTL level; (for general TTL
integrated circuit.)
10
knob to adjust voltage level.
5-6.Variation of external voltage-controlled frequency
This mode of operation allows the user to adjust the frequency of the
function generator with an external DC control Voltage. It also provides
an easy way to make adjustments.
(1) Select Function 8 first, then select the Range 7 , and rotate FREQ
13 to set the required frequency range.
(2) Connect an external control voltage (0 ~ 10V) to the VCF 17
connector via a suitable lead, the generated signal is on Output 18 .
(3) Other adjustments, such as AMPL 12 can be made by adjusting the
AMPL 12 knob for attenuation; adjust Offset 11 for DC level;
rotate the Duty knob to change the output signal of the pulse or
ramp waveform etc..
5-7. Precaution item
(1) Adjusting the DC OFFSET, will provide a change to the voltage of
10V (no load) or 5V (50 load). However, if a signal is added
the DC level, is still limited to 20V (no load) or 10V (50
load). In case of over-voltage, the waveform will be clipped and
appear as shown in Figure 2.
(2) Output connector label 50 , indicated that the signal source
impedance is 50 . To avoid oscillation, the connecting line should
be as short as possible.
(3) When adjusting the Duty knob anticlockwise, the ratio of positive
state to negative state, expands to not less than 80:20. It can expand
the square wave to pulse wave, the triangle wave to ramp wave and
sine wave to unsymmetrical sine wave. As shown in Figure 3 the
adjustment of the Duty control to obtain required waveform.
±
±
Ω
Ω
±
Ω
(4) If the square waveform set to a CMOS level is required, you can pull
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±
Ω
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
6. MAINTENANCE
Figure 2.
The following instructions should be used by a qualified person only. To
avoid electrical shock, do not perform any service other than that contained
in the operation instructions unless you are qualified to do so.
6-1.Fuse Rating and type
If the fuse blows, the TENMA 72-7710 FUNCTION GENERATOR
will not operate. Try to determine and correct the cause of the blown fuse,
then replace the fuse with correct rating and type shown as below:
FUSE Rating and Type
115V
230V
T 0.315A 250V
T 0.16A 250V
Rating Input
Watts
VA
25
32
Figure 3.
WARNING: For continued protection against fire, replace
only with 250V fuse of the specified type and rating, and
disconnect the power cord before proceeding fuse
replacement.
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
6-2.Fuse Replacement Procedure
2). Pull apart the handle from the Function Generator. Please turn the handle
If you wish to replace the fuse, the upper cover must be removed
according to the following steps:
left and right side slightly; this will make it easier to pull off the handle.
1). The handle must be turned downward 90 degrees first.
3). There are two washers inside of the two holes (the joints of handle and
case) respectively. Use a screwdriver to pry open these washers.
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FUNCTION GENERATOR- 72-7710
INSTRUCTION MANUAL
4). Use a screwdriver to open the screw located at upper side of rear panel.
Therefore, the upper cover can pull toward the backside. In the meantime,
the upper cover is moved.
Note: To replace the upper cover, please reverse above steps.
7-3. Cleaning
To keep the instrument clean, wipe the case with a damp cloth and
detergent. Do not use abrasives or solvents.
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