Description

 

QLS2805S-5M DDS Signal Generator/Counter Frequency Counter w/ 2.4" TFT Screen ts

Description:
The QLS2800S series instruments use large-scale FPGA integrated circuits and 32-bit high-speed ARM microprocessors. The internal circuit adopts SMT, which greatly improves the anti-interference and service life of the instrument. 2.4-inch TFT LCD screen features high resolution of 320*240. It can display all the parameters of the channel and prompt the current button functions, making good use of the button resources and greatly enhancing the operability.

The instrument has great advantages in signal generation, waveform scanning, parameter measurement. It is an ideal test and measurement equipment for electronic engineers, electronic laboratories, production lines and teaching and research.

Features:
- DDS technology, FPGA design, ultra-low power consumption
- Easy to carry and use with a DC5V power adapter
- 2.4-Inch TFT Colorful Screen: Easy to use with variable function buttons and rotary encoder
- Basic function waveforms including sine wave, triangle wave, square wave, sawtooth wave, and pulse wave with adjustable duty cycle
- Minimum frequency of output signal stands at 0.01Hz
- 10 Groups of parameter storage bits from M0 to M9. Automatically recall the data of M0 when it is powered on
- Waveform frequency resolution is 0.01Hz, and its amplitude resolution is 10mV
- 2 Trigger Modes: Manual and external triggering modes. It can output any pulse train from 1 to 999999.
- The duty cycle adjustment of pulse wave is accurate to 0.5%
- Frequency scanning with an end point
- With frequency measurement and counting functions
- All parameters can be calibrated by internal procedures
- Powerful communications function: completely open communication protocols makes secondary development easier
- After connecting to your PC, the PC can be used to control the instrument
- Its operation interface can be switched between Chinese and English, catering for wider application scope

 

Display Instruction:

① Output Frequency
② Amplitude
③ Bias
④ Duty Cycle
⑤ Measurement Function
⑥ Gate Time
⑦ Measured Frequency
⑧ Selective Functions
⑨ Output Waveform
⑩ Empty

Panel Introduction:

① Data Displayed Area
② Waveform Output Port
③ Input Port for External Signal
④ Output Port for TTL Signal (Synchronous OUT)
⑤ Operation Buttons
⑥ Encoder Knob
⑦ Function Buttons
⑧ Auxiliary Operation Buttons

Interface for PC:


Technical Parameters:
Main Characteristics:
- Frequency Range:
Sine Wave: 0Hz-5MHz
Square Wave: 0Hz-2MHz  
Triangle Wave: 0Hz-2MHz
Sawtooth Wave: 0Hz-2MHz
- Output Modulation: Frequency scanning, bursting
- Waveform Types: Sine wave, square wave, triangle wave, sawtooth wave
- Frequency Error: ±8×10-6
- Frequency Stability: ±5×10-6
- Amplitude Range (peak-to-peak): 10mVp-p to 10Vp-p
- Output Impedance: 50Ω±10%
- Amplitude Resolution: 10mVp-p
- Amplitude Stability: ±0.5% (every 5 hours)
- Amplitude Error: ±1% + 10mV (frequency 1KHz, 8 Vp-p)
- Offset Range: -100% to +100%

Sine Wave:
- Harmonic Resistance System: 40dBc (<1MHz), 35dBc (1MHz~5MHz)
- Distortion: <0.8% (20Hz~20KHz)

Square Wave:
- Time for Rising Edge & Falling Edge: ≤28ns
- Overshoot: ≤10%
- Duty Cycle Adjustment Range: 0.1%~99.9%

TTL/CMOS:
- Time for Rising Edge & Falling Edge: ≤28ns
- Low Level: <0.3V
- High Level: 1V~5V

Sawtooth Wave:
- Duty Cycle >50.1%: Rising Sawtooth Wave
- Duty Cycle <49.9%: Falling Sawtooth Wave

Scanning:
- Scanning Mode: Frequency Sweep
- Scanning Time: 0.1S～999.9S
- Scanning Range: 0-Max.Freq

External Measurement Functions:
- Frequency Measurement Range: 0.01Hz to 60MHz
- Minimum Input Voltage: 0.5Vp-p
- Maximum Input Voltage: 10Vp-p
- Counting Range: 0~4294967295
- Counting Method: Manual
- Source Selection: Ext.IN (analog signal)

Storage:
- Quantity: 10pcs
- Position: M0 to M9

Ports:
- Port Type: USB to Serial Port
- Communications Rate: 57600 bps
- Communications Protocol: Open protocol in command line

Physical Parameters:
- Power Supply: DC 5V
- Dimensions: 170 x 200 x 70mm (L*W*H)
- Machine Weight: 518g

Functions Show:
(1)Wave output function: output frequency 100K, peak-to-peak value 10V, sine wave signal with zero offset.
 

(2)Wave output function: square wave signal with output frequency 100K, peak-to-peak value 10V, and offset to zero.


(3) Wave output function: output frequency 100K, peak-to-peak value 10V, triangular wave signal with zero offset.


4) Wave output function: output sawtooth angle wave signal with output frequency 100K, peak-to-peak value 10V, and offset to zero.
 

(5) Wave output function: output frequency 100K, peak-to-peak value 10V, offset to zero sawtooth angular wave signal.


(6) Waveform output function: square wave angle wave signal with output frequency 100K, peak-to-peak value 10V, offset of +100%, and duty cycle of 10%.


(7) Waveform output function: square wave angle wave signal with output frequency 100K, peak-to-peak value 10V, offset of -100%, and duty ratio of 90%.


(8) Wave output function: output frequency 3M, peak-to-peak value 10V, sine wave signal with zero offset.


(9) Wave output function: output frequency 3M, peak-to-peak value 10mV, sine wave signal with zero offset.
 

(10) External bursting function: The oscilloscope comes with a 1K square wave signal, and the external trigger function outputs three cycles of a sinusoidal waveform with a frequency of 100K.
 

Package Included:
- 1 x Main Unit QLS2805S-5M
- 1 x Q9 Clipper Cable
- 1 x BNC-BNC Cable
- 1 x USB Cable
- 1 x DC5V Power Adapter