background image

Type 

6 in, Rectangle, Inside graduation 

Phosphor 

P31 

Acceleration Voltage 

Approx 2kV 200MHz 

CRT Screen Size 

8×10DIV[1DIV=10mm(0.39in)] 

Graduation 

Inside 

C

R

O

sc

ill

os

co

pe

 T

ub

Trace rotation 

Adjustable via panel 

Power requirement:                                      Operating Ambient:                              Accessories: 

 

Voltage

: Fixed AC220v±10% or                Indoor, 2000m elevation                       

 Power cord: ×1   

110/220V±10% changeable     

 Ambient temperature:10

35      

 Instruction manual:×1 

 

Frequency

: 50/60Hz                                 

 Max operating range:0

40        

 Probe:×2 

 

Power consumption

: approx.40VA         

 Humidity: 85% RH, dry 

                                                                     

 Size: 310×150×455(mm) 

                                                                     

 Weight: approx. 8kg 

                                                                     

 Storage temperature: -10

70  

 
 
 
 
 
 
 
 
 
 
 
 

Precautions 

1.

 

Unsealing   

Strict inspection and test are done before leaving factory, open the package immediately as this item is received to 
check whether there is any spoilage during transportation, if yes, contact supplier or sender immediately. 

2.

 

Check power voltage 

AC 110V/220V is available, check the voltage switch whether conforms with the local supply or not before switch 
on.   

Notice: Failure in select power will result in damage the oscilloscope. 

Warning: To prevent electric shock, do connect protect terminal to ground reliably.   

Replace the fuse refer to the following form if the fuse is burnt out. 
(Form 2)   

Voltage 

Range 

Fuse(AT7328) 

Fuse(AT7340) 

 

 

 

 

 

 

 

 

 

Warning: For protection, cut off power before replacing the fuse.

 

3.

 

Environment 

Ambient  temperature  of  operation  between  0-40   is  recommended.  If  you  operate  this  item  under  exceeding 
temperature range which may damage the circuit   

4.

 

Installation and Operation 

Summary of Contents for AT7328 Series

Page 1: ...d high light Voltage of accelerated pole up to 2kV it can be able to display clear traces even under high speed sweep The alternative triggering function can observe different signal waveform in two frequencies TV signal synchronous function CH1 output 50 output signal in the rear panel can drive frequency counter directly or other instrument Z axial input Function of bright adjustable can add fre...

Page 2: ...ce Transformer Coaxial Directional Coupler Detector Power Divider 7 Advanced Milli volt Meter 8 Regulated DC Power Supply 1 AT TPR Series Low Ripple CV Digital Display Power Supply Industrial Products 2 AT E Series Ultra Ripple High Precision CV CC Power Supply Research Education Military Products 3 AT SPS Series Compensation Linear Power Supply 4 AT KPS Series Switching Adjustable Power Supply 5 ...

Page 3: ...DD Addition of Channel 1 and Channel 2 Interruption Repetitive Frequency Approx 250KHz Input Coupling AC GND DC Max Input Voltage 300Vp p AC Frequency 1KHz When probe sets in 1 1 maximum effective readout value is 40Vpp 14Vrms Sine wave When probe sets in 10 1 maximum effective readout value is 400Vpp 140Vrms Sine wave CMRR 50 1 50KHz sine wave If CH1 and CH2 have the same sensibility 1000 1 50KHz...

Page 4: ...C AC peak AC not exceed 1KHz Sweep time 0 2 Sec0 5Sec DIV Accuracy 3 Trimming 1 2 5 panel graduation Sweep expansion 10 times 10MAG Sweep time accuracy 5 20n sec 50n Linearity 3 10MAG 5 No calibration at 20ns 50ns Horizontal System Position by 10MAG 2DIV in center CRT RF MICROWAVE INSTRUMENT SERIES Specifications Sensibility Refer to Vertical axis Bandwidth DC 500KHz X Y Mode X Y Phase difference ...

Page 5: ...g factory open the package immediately as this item is received to check whether there is any spoilage during transportation if yes contact supplier or sender immediately 2 Check power voltage AC 110V 220V is available check the voltage switch whether conforms with the local supply or not before switch on Notice Failure in select power will result in damage the oscilloscope Warning To prevent elec...

Page 6: ...V peak Warning To prevent damage do not exceed these values Frequency of Max input voltage must be lower than 1 kHz If an AC volt overlaps on DC volt the maximum voltage of CH1 and CH2 input cannot exceed 300V therefore for a AC which average voltage is zero its peak peak value is 600Vpp Operation methods 1 Features of front panel See fig 1 CRT 6 Power Main power switch LED 5 lights when this swit...

Page 7: ...l and trigger signal of CH2 invert simultaneously Triggering 24 External trigger input Used for trigger for external signal For this case Switch 23 it should be set in EXT 23 Selection of trigger source Trigger of internal INT or external EXT CH1 Choose CH1 as internal trigger signal source for vertical mode switch 14 is set in DUAL or ADD CH2 Choose CH2 as internal trigger signal source for verti...

Page 8: ...al and horizontal deflection factor of oscilloscope 15 GND Grounding terminal of oscilloscope case 2 Features of rear panel See fig 2 34 AC Power AC Power input jack AC power wire connects here 35 Supporter For supporting the oscilloscope and lead out the power cord Operation methods 3 Basic operation Single channel operation Make sure whether the voltage of the unit is in accordance with your loc...

Page 9: ...only the signal of trigger signal generator can stably display if TRIG ALT switch depressed both the waveforms stably display 5 Operation By adjusting the setting of Vertical modes switch to add the algebraic sum of CH1 and CH2 will be displayed or algebraic difference if the switch CH2 INV is depressed For gain the accurate values of both the attenuation setting of the both channels must be consi...

Page 10: ...gger switch set in rising edger triggered and falling edge is triggered for See fig 6 6 Fig 6 Positive zone Level Trigger alternative switch When vertical mode set in dual channel display the switch used in alternative trigger and alternative display suitable for the mode of summarize with CH1 CH2 In alternative mode trigger signal alternates one time for every sweep period This mode is avail for ...

Page 11: ...on signal adjust compensation capacitor to the best waveform no overshoot fillet upwarping See fig 9 9 Fig 9 Appropriate compensation Overcompensation Undercompensation 11 DC balance adjustment DC BAL Set the input coupling switch of CH1 and CH2 in GND trigger mode in AUTO adjust trace in centre position Adjust the attenuation switch between 5mV and 10mV tune DC BAL until the trace is below zero h...

Page 12: ...r sampling Trigger switch Z Z axial input High voltage X X axial signal 1 CH1 Sweep generator Line scan switch 2 CH2 Trigger input amplify Trigger signal generator Line scan output amplify External Auto circuit Free oscillate signal To circuits of other units Power circuit 50 60Hz AC 50 60Hz Power trigger 2Vp p 1KHz 2Vp p 1KHz square waveform Calibration signal generator All specifications are sub...

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