Universal System
Instruction Manual
Catalogue
Brief …………………………………………………………………2
Panel Operation Instruction … ……………………………………3
Operation Cautions … … …………………………………………4
Frequency Counter (FC)Operation Instruction … … ……………5
Function Generator(FG) Operation Instruction …………………7
DC Power Supply (DPS)Instruction … …………………………10
Digital Multimeter (DMM) Instruction …………………………11
Accessories … … …………………………………………………31
Maintenance and Service …………………………………………31
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Brief
Thanks for your purchasing universal system.
To ensure the correct operations, please read the manual carefully before using it. After that, please keep it well.
The instrument is produced according with the strict quality control standard. All the components are selected and aged in full range. It passes a series environmental experiments and it will be in optimum working state in the indicated working environment.
Service after sales: Please contact our customer service office if the instrument is defective to get effective service after sales.
Composition:
1.DDS signal generator: it adopts digital synthetic technology which can generate
5waves of sine, square, triangle, pulse and TTL. The frequency range is 0.1Hz 10MHz.
2.Frequency Counter The frequency range is 1Hz 2.7GHz with high measurement accuracy and can realize equal accuracy measurement.
3.DC Power Supply: It is composed of four groups’ outputs, 0 30V/0 3A adjustable voltage output, 15V/1A fixed voltage output, 15V/1A fixed voltage output and 5V/2A fixed voltage output.
4.DMM It has about 50 kinds of measurement functions with multi display: master display 80000 count, slave display 80000 count and 20 segments of bar graph. The max. AC/DC voltage is up to 600V DC/450V AC and DC/AC current up to 10A. Resistor measuring range is 0.01Ω 80MΩ, 10MΩ 1000MΩ, capacitor measuring range is 1pF 100μF and the temperature range is -50 1300 -58 2372 (with external sensor). It has 16 kinds of frequency (0.5Hz 5kHz) and adjustable pulse waveform output of 1% 99% duty cycle.
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Panel Operation Instruction
Diagram of Front Panel
Diagram of Rear Panel Operation Instruction
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○,1 |
Display window of FC |
○,3 |
Data hold of FC |
○,5 |
Channel select key of FC |
○,7 |
CHB input of FC |
○,9 |
Frequency variable knob of FG |
○,11 |
Input of ext amplitude of FG |
○,13 |
Signal output of FG |
○,15 |
DC offset variable knob of FG |
○,17 |
Output on/off control key of FG |
○,19 |
Display control key of FG |
○,21 |
Auxiliary function key zone of DMM |
○,23 |
Function keys zone of DMM |
○,25 |
Input terminal of mA current of DMM |
○,27 |
Common terminal of DMM |
○,29 |
Current variable knob of DPS |
○,31 |
Constant current indicator of DPS |
○,33 |
Voltage/current display select switch of |
DPS |
|
○,35 |
Grounding terminal |
○,37 |
Display window of DPS |
○,39 |
Power switch of FC |
○,41 |
mA current measurement fuse of DMM |
○,43 |
Power socket |
○,2 |
Reset of FC |
○,4 |
Gate time key of FC |
○,6 |
Low pass filter key of FC |
○,8 |
CHA input of FC |
○,10 |
Keyboard operation zone of FG |
○,12 |
TTL output of FG |
○,14 |
Duty variable knob of FG |
○,16 |
Amplitude variable knob of FG |
○,18 |
Output impedance select key of FG |
○,20 |
Display window of DMM |
○,22 |
Power switch of DMM |
○,24 |
Input terminal of 10A current of DMM |
○,26 |
Input terminal of voltage and current |
measurement |
|
of DMM |
|
○,28 |
Voltage variable knob of DPS |
○,30 |
Fix +5V/2A output terminal of DPS |
○,32 |
Fix ±15V/1A output terminal of DPS |
○,34 |
0 30V/0 3A output terminal of DPS |
○,36 |
Main power switch |
○,38 |
Power switch of FG |
○,40 |
10A current measurement fuse of DMM |
○,42 |
AC115V/AC230V select switch |
Operation Cautions
1.The instrument has already been done ex-factory inspection strictly. Please first check whether the instrument is damaged or not during the transportation once the user opens the package box.
2.Don’t put it in chilly outside. The optimum operating temperature is 5°C 35°C.
3.Don’t expose it at the sunshine or heat source such as stove, for long time.
4.Don’t remove it from heat to chilly environment abruptly or vise versa which will cause frozen in the inner.
5.Keep it from humidity, water and dust. Otherwise the instrument maybe occur malfunctions. The optimum relative humidity is 35 75 .
6.Keep it from the strong shocking environment. Otherwise the instrument maybe occur malfunctions.
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7.Keep it far away from the high magnetic field and don’t operate it near to magnetic field. Do not expose it to strong sunshine or ultraviolets directly.
8.Don’t put other objects on it and don’t block the vent holes.
9.Don’t insert lead or pin into the vent holes.
10.Don’t drag it through cables.
11.Don’t put soldering iron on its surface or plastic frame.
12.Don’t invert it for long time during storage and transportation.
13.Check steps before operation
13.1 Check voltage
Refer to the suitable working voltage as below before the power is on.
Rated voltage |
Working voltage |
AC230V |
AC230V±10% |
AC110V |
AC99V 121V |
13.2Make sure the fuse should be suitable.
To avoid the circuit damage caused by over current, please use the correct fuse.
Power fuse: AC230V T250V 4A Shape: 5×20mm Type: slow-break
DMM fuse: mA current: F 690V 1A Shape: 10×38mm Type: fast-break
10A current division: F 690V 12.5A Shape: 10×38mm
Type: fast-break
*Note: The voltage of the original fuses installed in this product is 690V. In replacement of the fuse, please choose fuses of voltage higher than 600V.
Frequency Counter (FC) Operation Instruction
1. Technical Specifications |
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1.1 Freq. measurement range: |
CHA |
1Hz 100MHz |
|
CHB |
100MHz 2.7GHz |
1.2 Input sensitivity: |
CHA |
50mVrms for sine wave |
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150mVpp for pulse wave |
|
CHB |
-13dB(100MHz~1GHz) |
|
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-7dB(1GHz~2.7GHz) |
1.3 Measurement accuracy: |
±(100ns/Gate Time+ Timebase Error+Trigger Error x |
|
the Frequency of the measured signal |
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|
5 |
Note: Time base Error: ≤10ppm(at normal temperature)
Trigger Error≤0.3% when SNR(Signal-to-Noise Ratio)>40dB
1.4 Dynamic Range: |
CHA |
50Vrms~1.5Vrms |
|
|
CHB |
-13dBm~+13dBm |
(100MHz-1GHz) |
|
|
-7dBm~+13dBm |
(1GHz-2.7GHz) |
1.5 Max. undamage voltage: |
CHA |
35Vpp |
|
|
CHB |
3Vpp |
|
1.5 Input impedance: |
CHA |
1MΩ//40pF |
|
|
CHB |
50Ω |
|
1.6 Time base frequency: |
10MHz |
|
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1.7 Resolution: |
±(100ns/Gate times x measured signal frequency |
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2. Basic Operation |
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2.1Please check voltage and fuse before the power is on. Turn on main power switch○,36 and then turn on FC power switch ○,39 which is on the rear panel of instrument and then preheat 20 minutes.
2.2After the power is on, the display window ○,1 of FC indicates “0000000”, the indicator of CHA will be on. The strobe time is 1s and the indicator of strobe is on. The indicators of Hold and Low pass filter (LPF-A) will be off.
2.3LPF-A key ○,6 : bandwidth about 100kHz at 3dB, Open LPF (indicator of LPF-A will be on) to eliminate the HF disturb of the LF signal below 100 kHz which will make the measured result more reliable.
2.4Channel key ○,5 : It is used to select the measured channel. CHA can be used to measure 1Hz 100MHz signal frequency. CHB can be used to measure 100MHz 2.7GHz signal frequency.
2.5For CHA,
a.When frequency is <100 kHz, please turn on the low pass filter (LPF-A).
b.When the amplitude of frequency is >5V, please use external attenuators, such
as oscilloscope-probes.
2.6Strobe time select key ○,4 : It should choose a suitable strobe time if a suitable resolution is needed. Once the period of the measured signal is more than strobe time, the measurement time is regarded as a period time of the measured signal.
2.7Data Hold ○,3 : Press it down, the Hold indicator will be on. Then the FC will stop measurement. The display window will always keep the last measured data even the signal frequency is changed or test dot is broken. Press Hold again, its indicator will be off. Then FC re-starts to measure and the display window will record new frequency measurement data.
2.8Reset ○,2 : It is used to reset the FC.
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2.9 Over-flow indicator OFL : When the measured signal frequency is over the range, the over-flow indicator (OFL) will be on, and “ ” will be on the display window ○,1 .
2.10When both FC and FG are working, both powers need to be turned on. To turn off FG and keep FC working, please press the DISPLAY key (○,19). After the “F/C” indicator lights, the display window(○,1) shows the measured frequency by FC. Then turn off the FG’s power switch.
Function Generator (FG) Operation Instruction
1. Technical Specification |
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1.1 Waveform characteristic: |
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1.1.1 Waveform type: sine, triangle, square. |
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1.1.2 Sine harmonious wave distortion 1Vpp 50Ω : 20kHz |
-50dBc |
20 kHz 1MHz |
-40dBc |
1MHz 10MHz |
-35dBc |
1.1.3Sine wave distortion: ≤1 0.1Hz 100 kHz
1.1.4Square wave Rise/Fall time: ≤50ns 1MHz, 50Ω, output voltage 5Vpp
1.1.5Square overshot: ≤5
1.1.6Square duty cycle range: 15 85≤10kHz
1.1.7Waveform asymmetry: 1.5 20ns of period≤100 kHz
1.1.8Triangle linearity: 1≤100 kHz
1.2 Frequency characteristic: |
|
1.2.1 Frequency range: Sine wave |
0.1Hz 10 MHz (50Ω) |
Square wave |
0.1Hz 1 MHz 200mVpp 10Vpp 50Ω |
Triangle waveform 0.1Hz 1MHz
1.2.2Frequency accuracy: ± 5×10-5 80mHz
1.2.3Frequency stability: 50ppm long term (Generally, calibration at 1 time/year)
1.2.4Max. Resolution: 0.01Hz
1.3 Amplitude Characteristic:
1.3.1 Output amplitude range: 100mVpp 20Vpp High impedance 1.3.2 Amplitude flatness: ±5 (in 0.1Hz~10MHz at 50Ω)
1.3.3 Output impedance: 50Ω±10 /600Ω±10 1.4 Overshot Characteristic
1.4.1 DC offset range: Vpp AC DC: ±10V 600Ω; ±5V 50Ω 1.5 Sweep Frequency Characteristic:
1.5.1 Type: Linearity or Log
1.5.2 Sweep frequency: Negative or positive 1.5.3 Sweep range: 1Hz 10MHz
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1.5.4 Sweep freq velocity: 0.01Hz 100Hz 1.6 Attenuation:
1.6.1Attenuation: -20dB
1.6.2Error: ±3 (open circuit 1.7 External Amplitude Input:
1.7.1Input impedance: 1kΩ
1.7.2Ext amplitude freq range: 0.1Hz 20kHz the output impedance of modulation source is 50Ω
1.7.3Ext amplitude sensitivity: 0 5Vpp±2%
1.7.4Amplitude depth: 0 100 1.8 TTL Output:
1.8.1Output amplitude: “0” level ≤0.3V; “1” level ≥3.3V
1.8.2Output impedance: 50Ω ±10 2. Panel Layout
2.1 There are 3 ports on panels, signal output port ○,13 , TTL synchronized output port ○,12 and ext amplitude signal input port ○,11 .
2.2 There are four variable knobs on panels, freq variable knob ○,9 to adjust output frequency of signal and change setting of sweep frequency parameter, Duty variable knob ○,14 used to adjust duty ratio of square wave, DC offset variable knob ○,15 used to adjust DC offset of signal and Amplitude variable knob○,16 used to adjust amplitude of the output signal.
2.3 There are 14 keys on keyboard operation zone: 10 number keys (number 0
9 );2 direction keys left , right ; 1 decimal point . ; 1 OK key OK . There are three function keys: One is signal output switch○,17 which is used to control whether FG output signal or not. Press it, FG output is switched between on/off state. The indicator above the key is corresponding to the FG output state; the secondly is output impedance key○,18 , the indicator above the key is corresponding to FG output impedance. Press it, FG output impedance will be switched between 50Ω and 600Ω; The thirdly is display function switch key (○,19) which is used to change the display
function of window ○,1 . When the F/C indicator is on, the display window will be used to display the measured frequency of the FC and when F/G indicator is on, the display window will be used to display the frequency of the FG. Once the power is on, the default state of the display window ○,1 is to display the frequency of the FG.
2.4The secondary function key: Once the power is on, the indicator “FUNC” above key OK will be on. The below keys, keys 1 7 , decimal point
. and OK , are used for the second functions which are indicated above the keys,
3. Basic Operation
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3.1FC display window ○,1 displays frequency. 6 digits of FG.
3.2The frequency can be adjusted by hand wheel or enter numbers directly. Once the power is on, the default output frequency is 1 kHz. At the time, number “1” is flashing. Remove the flashing number horizontally by and and the flashing number can be changed through rotating the hand wheel. Press . , indicator “Range” above . will be on. Then the frequency unit indicator will be flashing to indicate which unit should be applied to the value shown on the display window ○,1 . Rotate the hand wheel; the value will be changed as ×10 times or 1/10 times each time. Press . again, the “Range” indicator will be off and re-start adjustment mode by hand wheel. Press OK , “Func” indicator will be off, frequency on window is cleared and enter into state of entering numbers directly. All the entered numbers will be flashing and they are can be deleted freely from left to right through , which can correct the numbers. And also units, such as MHz, kHz, Hz, can be selected through . Press OK again after entering numbers, the key of “Func” will be on; the signal frequency will be displayed on frequency window.
3.3The operation of Secondary function key.
Once the power is on, the “Func” indicator above OK will is on. Parts of keys are corresponding to the secondary functions which are indicated on panel.
-20dB Press 1 the indicator “-20dB” will be on. The attenuation amplitude of output signal is -20dB of the original output amplitude. Press the key again, the indicator “-20dB” will be off, the amplitude of output signal will not be attenuated.
Duty Press 2 the indicator above “Duty” will be on. Adjust the Duty cycle variable knob ○,14 to change duty ratio of square wave. Press the key again, the indicator “Duty” will be off, the output duty cycle of square wave is 50%. At the time, the Duty variable knobs ○,14 do not work.
Offset Press 3 the indicator above “Offset” will be on. Adjust the DC offset variable knob ○,15 , DC offset of output waveform can be adjusted. Press the key again, the indicator “offset” will be off, the output waveform is back to normal. At the time, the DC offset variable knob○,15 won’t be work.
Wave When the power is on, the default output of FG is sine wave. The ”Sine” indicator will be on. Once press number 4 each time, output waveform of FG will be switched between sine, square and triangle in turn.
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