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⑧ 単位 LED 単位を表示する LED です。 ⑨ アッテネータ LED SHIFT + 8 (-20dB) キーで 20dB アッテネータを ON にすると点 灯します。AMPL ⑮ツマミをひいて 20dB アッテネータを ON にした場 合は点灯しません。 ⑩ DUTY LED DUTY LED が点灯しているときは、ディスプレイはデューティ比を表示 しています。編集待ち状態です(方形波のみ)。 ⑪ TTL/CMOS LED TTL/CMOS 出力がオンのとき、TTL LED が点灯します。(MAIN 出力 波形が方形波のときは、常にオンになります。)...
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CONTENTS USING THE PRODUCT SAFELY ·······················································Ⅰ-Ⅳ FEATURES ..................1 SPECIFICATIONS ................2 FRONT AND REAR PANELS ............5 3.1. Front Panel ................5 3.2. Rear Panel................9 OPERATION ..................10 4.1. The first time setup for the Instrument........10 4.2. Power-On Settings..............
USING THE PRODUCT SAFELY ■ Preface To use the product safely, read this user's guide to the end. Before using this product, understand how to correctly use it. If you read this manual but you do not understand how to use it, call the company or each sales office that is indicated on the back cover of this user's guide.
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USING THE PRODUCT SAFELY WARNING ■ Do not remove the product's covers and panels Never remove the product's covers and panels for any purpose. Otherwise, the user's electric shock or a fire may be incurred. ■ Warning on using the product The warning items given below are to avoid danger to the user's body and life and avoid the damage and deterioration of the product.
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USING THE PRODUCT SAFELY WARNING ■ Warning item on grounding The product has the GND terminal on the panel surface to protect the user from electric shock and protect the product. Be sure to ground the product to safely use it. ■...
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USING THE PRODUCT SAFELY CAUTION ■ Input/output terminal Maximum input to the input terminals is specified to prevent the product from being damaged. Do not supply input, exceeding the specifications that are indicated in the "Rating" or "Caution on use" column in the user's guide of the product.
1. FEATURES The FG-274 is Synthesized Function Generators which apply Direct Digital Synthesis (DDS) technique and can generate accurate and stable frequency with high resolution. The main signal source generate waveform including Sine wave, Square wave and Triangle wave. The main features are listed as follows: The design of DDS and FPGA technology provide high quality waveforms.
2. SPECIFICATIONS 1. Main Output Output Function Sine, Square, Triangle 0.1Hz to 4MHz (For Sine, Square) Frequency Range 0.1Hz to 1MHz (For Triangle) Resolution 0.1Hz ±20ppm Stability Accuracy ±20ppm Aging ±5ppm/year Amplitude Range 10Vp-p (into 50Ωload) 50Ω±10% Impedance -20dB±1dB ×2 Attenuator <-5V to >5V (into 50Ωload) DC Offset...
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4. Square Wave ±(1% of period + 4ns) to 0.1Hz to 100kHz Symmetry ≦25ns at maximum output. Rise or Fall Time (into 50Ωload) 5. CMOS Output 4V ± 1Vp-p to 14.5V ± 1Vp-p Level , adjustable ≦120ns Rise or Fall Time 6.
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-10℃ to 70℃. (+14 F to 158 Storage Temperature & Humidity 70% (Maximum). Accessory code (BNC-ALLIGATOR) ×1 Instruction manual ×1 Accessories AC cable ×1 266(W) × 97(H) × 293(D) mm Dimension Weight Approx. 3.1kg 9. Regulation EN 61326-1: 1997+A1: 1998+A3: 2003 Safety IEC/EN 61010-1: 2001 ※1 When the fuse is blown, the customer cannot replace it.
3. FRONT AND REAR PANELS 3.1. Front Panel ① POWER button: Power on/off the instrument by pressing the button with the display on/off. Note: Please pay attention to electric strength of connected equipment. A transitional output (in ratings) might go out of the terminal OUTPUT, when power supply is turned on and turned off.
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Secondary Function keys: The secondary function keys are activated by the combinations of SHIFT key and numerical keys labeled in blue. • DEFAULT ( SHIFT 2 (DEFAULT) ) will set this instrument to the default setup. • STORE ( SHIFT 6 (STORE) ) allows to store frequency and duty cycle setting up to 10 memories.
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⑦ SHIFT key Status LED: To indicate the SHIFT key status. When this LED is on, the following numerical keys will be activated as the secondary function keys. ⑧ Units LEDs: To indicate the units of frequency or duty cycle. ⑨...
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⑭ TTL/CMOS Output Press SHIFT + 9 (TTL) keys, a TTL compatible waveform will be obtained from the output by pushing back and rotating the TTL/CMOS knob ⑰, and a CMOS compatible waveform (5Vp-p to 15Vp-p) will be obtained from the output while the TTL/CMOS knob is pulled out and rotated.
3.2. Rear Panel AC100V exclusive use model AC115V/230V change model ⑱ Power Entry Socket AC input should be within the range of line voltage ±10%, 50/60Hz. ⑲ Line Voltage Selector To switch the power line voltage between AC115V and AC230V.
4. OPERATION 4.1. The first time setup for the Instrument Ensure that the voltage of main supply is compatible with this instrument. The selector on the rear panel states the required AC line voltage. (Only AC115V/230V change model) Connect the instrument to main supply with the power cord. Turn on the instrument, the model number will show up on the parameter display area first, then, the output is started by the factory default setting.
For reset setting ,when factory is shipped. Execution DEFAULT command and Initializing the memory. 《Please refer to 4.12.1) “DEFAULT” ,4.11 DELETE Setting》 There is no data in the memory. ※ 4.3. Output Setting Press WAVE key to select main output waveform. The waveform will be changed in the sequence of Sine, Square and Triangle waveform every time when the key is pressed, and the corresponding waveform LED ⑥...
Note: 1) The back space is possible, while inputting ten keys. Press SHIFT + MHz (←) . And Press SHIFT kHz (CLEAR) when all digits input can clear. To be inputting ten keys is to push the unit key MHz , kHz ,...
Note: 1) However, signal added DC level is still limited to ±20V (no load) or ±10V (50Ω load). In case of over-voltage, the clip of waveform will appear as shown below. If 20dB attenuator is turned on, the range of the offset changeability becomes small 20dB, too.
Example of the Duty cycle Setting Set the Square wave Duty cycle to 60%. Press SHIFT 7 (DUTY) keys, DUTY LED ⑩ is on, then press Hz/% . Change the Duty cycle to 30%. ◄ ► key to shift the flashing digit to “6” position, then change the digit to “3”...
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Note: The main output waveform (Sine and Triangle wave) quality will be affected when TTL/CMOS is activated. So when a high quality Sine or Triangle wave is required, please turn off this function. When you choose square wave, the TTL/CMOS function will always be activated.
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Example of the Setting of the CMOS Output To set the instrument: • Frequency: 10kHz , Signal type: 10Vp-p CMOS output Set the main frequency to 10kHz (refer to 4.4 Frequency Setting). Press SHIFT + 9 (TTL) keys to set TTL/CMOS output mode.
4.9. STORE Setting The Store function allows to save the setup parameters (Frequency value and Duty cycle for square wave) of the instrument into its nonvolatile memory with the stored group number from 0 to 9, up to 10 groups totally. Press SHIFT + 6 (STORE) keys, the message of “Store 0”...
Key in the group number from 0 to 9 . The message of “done” will present to complete the recall function. The setting should be changed accordingly. Example of the Setting of the RECALL To retrieve the parameters from the group 6. Press SHIFT + 3(RECALL) keys first, then key in 6 .
4.12. SHIFT Key and Function Keys The SHIFT key is used to enable the secondary functions of certain function keys with blue printed letters. After pressing the button, the SHIFT LED ⑦ will light, only the keys labeled in blue are activated. Press SHIFT key again to release the secondary function.
4.13. Error message of the instrument The error message shows up when the illegal entry is performed. The categories of the error message is listed as the following table: Error Code Explanation (Limitation) FrEq- Err1 Sine and Square wave Frequency over range. FrEq- Err2 Triangle wave Frequency over range (1MHz).
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1850-1, Tsuruma, Machida-shi, Tokyo, 194-0004 Japan http://www.texio.jp...