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| Yes. When the data do not fit on one disk, a message appears prompting you to enter the next floppy disk. Simply follow the instructions to save the data to multiple floppy disks. The same procedure also applies when loading the data. These operations are also the same for the DL1520. |
| Yes, the data are retained using a lithium battery even if the power is turned OFF. This applies to the DL1520 Series and the DL1540 Series. |
| The measurement function can be used only when data are saved in the ACQ (BIN) format. In addition, when data are saved in this format, all functions including waveform zoom can be used in the same fashion as with the captured data. When P-P data are saved, the waveform can only be displayed; measurement functions and other functions cannot be used.
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| Yes, screen image data can be saved in BMP and other formats even if the built-in printer is not installed. |
| It is in the IS2 format unless the History Memory function is active, then it is in the IS1 format. |
| When using color, the file size ranges from 50 KB to 200 KB when Compression is turned ON. The size varies greatly since the compression rate changes depending on the density of the waveform. The file size is larger for waveforms that cover the entire display screen. When Compression is turned OFF, the size is approximately 300 KB. |
| This is not possible, because the internal circuit is not common between the two models. The reverse direction is not possible, either. Note that the data on the DL1540CL can be loaded by the DL1540C, but not vice versa.
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| Yes, you can select color or monochrome when saving or transferring the data.
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| There are two types of waveform data that can be loaded.
Waveform data saved using P-P: Computation and X-Y display cannot be performed on P-P display waveform data that are loaded.
Waveform data saved in ACQ BIN format: Computation and X-Y display are possible on this type of data.
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| It is the power spectrum defined by PS = 20 x Log(X/1Vrms) |
| If Y(V) is the converted value for X(dBV), the equation is Y = 10(X/20) (V) from X=20xlogY |
| If the FFT does not appear, check to assure that the horizontal position of the waveform is set exactly to Zero. If the horizontal position is set to a non-zero value, the FFT will not be performed. |
| The result of the computation between channels is displayed in units of divisions. By subtracting ch1 from ch2, you obtain 10 V. However, the result shows 2, a value obtained after dividing 10 V by the V/div value (10/5). |
| The averaging function supported by the DL1500 Series is exponential averaging. The models that support linear averaging (simple averaging) are the DL4000 Series, DL2700, and DL708. |
| The minimum dead time on the DL1540 and DL1540L is approximately 200 µs. However, this value varies depending on the T/Div setting, the number of channels, and the data length. Consider the minimum value to be the value obtained when the memory length is set to 1 KW and the T/Div is set to 1 µs/Div. For other settings, the dead time may even be a few milliseconds. Therefore, keep in mind that the value indicated above is a minimum value. |
| The FFT is computed based on the ACQ data. In order to perform the FFT over 1 k points, the ACQ data are decimated (reduced) from 10 kW to 1 kW. At this point the sampling rate is equivalent to 100 ks/s (1/10 of 1 MS/s). Therefore, the sampling rate display is turned OFF. For example, to perform an FFT over the data sampled at 1 MS/s when the memory length is 10 kW, the data are decimated from 10 kW down to 1 kW. This means that the sampling rate is equivalent to 100 kS/s at this point. Therefore, to avoid misinterpretation, the sampling rate display is turned OFF. In this case, the actual sampling rate is 1 MS/s, which means that the frequency bandwidth of the time axis waveform is 500 kHz. However, because the sampling rate is reduced to 1/10 as explained above, the frequency bandwidth of the FFT is 50 kHz.
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| It is fixed. 1ch: yellow, 2ch: green, 3ch: pink, 4ch: blue. |
| Yes, the color of the snapshot waveform is white. |
| The manufacturer of our LCDs, has given us data indicating that the luminance drops to half after 25000 hours. |
| The width level of the WINDOW trigger cannot be set to a value less than the voltage corresponding to 1 division at the specified voltage sensitivity. For example, if the voltage sensitivity is set to 500 V/div, then the width level cannot be set below 500 V. This limitation is due to the fact that the trigger sensitivity of the DL1500 Series is 1 divp-p. |
| Yes, there is no restriction on specifying or using the two functions simultaneously. |
| This function is available on firmware version 1.10 and higher. To check the version, press the MISC key on the front panel. Then select "Information" using the soft keys. This function is available on all versions of the DL1540L. |
| The menu screen and messages are cleared when commands such as "start" and "cursor on" are issued. |
| Only P-P data can be transferred in the started condition. The instrument must be stopped to transfer ACQ data. |
| Up to 10 seconds. Normally, it is six or seven seconds, however this will vary depending on the performance of the PC and the GP-IB board. On the DL1540C, this may take longer than 10 s, because the screen image data contain color information. Assure that the time-out setting for the PC being used is set long enough to accomodate the required transfer time.. |
| Error code 915 is the error message "Can't detect listener." This is described in the Communication Interface User's Manual. This error occurs when the hard copy destination is not set to the "printer", but to "plotter" without connecting external devices. |
| It is 1 to 2 Hz when all measurement items are specified on Trace1 through Trace4. It is 5 to 6 Hz when only a few measurement items are specified on Trace1. |
| Approximately 500 ms when performing zone determination and Approximately 700 ms when performing parameter determination. |
| No. The power supply section of the DL1540, DL1540L, DL1540C, and DL1540CL automatically switches between 100-120 VAC and 220-240 VAC. The power supply section of the DL1520 and DL1520L is specified when you order the product. It does not have a power selector switch, and cannot be modified after the product is delivered. |
| Yes. The part number is A9080ZG. |
| The NO-GO output is controlled by software. Thus, there may be fluctuations in the processing time depending on the sensing conditions. Since the signal remains low until the next determination can be accepted, this means that the processing time may fluctuate at the software level depending on the conditions. In any case, the minimum pulse width of 10 ms is guaranteed. |
| Half-pitch 50-pin (pin type). |
| No, it can't. As the DL1540C, DL1540CL use the color TFT LCD screen, output to the monitor is supported by the VGA output function (optional). |
| To use the isolated input unit, the firmware version of the DL1540 must be 1.10 or higher. Please check the version number. If the version number is lower than 1.10, the firmware must be upgraded. |
| You can display a comment at the top section of the waveform display frame. In this case, up to 25 characters can be entered. Up to 25 characters are also displayed. However, note that if you attempt to edit a preexisting comment, only the first nine characters are displayed. In this case, you must reenter characters after the ninth character. |
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DL1500 Series Portable Digital Oscilloscopes |
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