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ASNT Pre-Emphasis User Manual

32.5 gbps advanced driver / amplifier
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Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com
ASNT Pre-Emphasis
32.5Gbps Advanced Driver/Amplifier
USER GUIDE
Rev. 1.1.1
1
July 2016

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Summary of Contents for ASNT Pre-Emphasis

  • Page 1 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com ASNT Pre-Emphasis 32.5Gbps Advanced Driver/Amplifier USER GUIDE Rev. 1.1.1 July 2016...
  • Page 2 Unit Description Fig. 1 incorporates the advanced programmable driver amplifier with built-in pre-emphasis ASNT6119- KMF, and support logic. The differential Data Output (P/N) have female K connectors, and the remaining signal I/O’s (front panel) have female SMA connectors. Fig. 1. ASNT Pre-Emphasis Unit Rev.

  • Page 3: Software Installation

    Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com All high speed I/O’s have a default common mode level of . A correct common mode level needs to be observed if the input signals are applied in DC-coupled mode. The application of a common mode voltage on DC-coupled I/O’s greater than 1V may permanently damage the chip.
  • Page 4 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 2. Select Target directory for location of the files that will be installed. Then click Next. 3. Click Next. 4.
  • Page 5 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 5. Click Finish. 6. Click Restart if the window shown below appears. Rev. 1.1.1 July 2016...
  • Page 6 8. Connect the USB B connector to the board if not already done. 9. Double click on the icon ASNT PreEmp V1.x.1 on the desktop to open the control software. Wait until the USB indicator at the bottom of the control software window has turned green. This indicates that the software is connected to the PreEmp.
  • Page 7 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com Table 1 below. To adjust the slide bars, left-click on the corresponding button, and move it up/down, or left/right with the mouse’s left button, or arrows keys.
  • Page 8 Table 1. GUI Slide Bars GUI Slide Bars Function Default state Pre-Emphasis Tap 1 / Tune 1 Sets the relative digital + analog weight of Tap 1 Minimum Between Pre-Emphasis Tap 2 / Tune 2 Sets the relative digital + analog weight of Tap 2...
  • Page 9 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com Table 3. GUI Indicators GUI Indicators Function Comments Green – USB is active, Red – USB is disconnected Eye Cross, % Eye crossing point position in % of the swing Output Data Peak...
  • Page 10 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com Aligning Clock vs. Data 1. Set the initial states as shown in Fig. 2, except for clock multiplier which was previously adjusted. 2.
  • Page 11 Signal polarities in all four channels can be selected by appropriate Invert switches of GUI. The Tap weights are controlled by four pre-emphasis slide bars in the top left corner of GUI (named Tap 1 / Tune 1, Tap 2 / Tune 2, Tap 3 / Tune 3, and Tap 4). Positions of all bar sliders correspond to Tap weights at the output.
  • Page 12 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 3. The Tap 3 / Tune 3 slide bar defines the analog weight of Tap 3 (from 0% to W %) and presents % to 0%) as the weight of Tap 4.
  • Page 13 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com For S : from k to (k + 1 - A ), where k = 0, 1, 2, 3, 4, 5, 6, 7 For S : from k to (k...
  • Page 14 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 4.5. Set the Tap 4 slide bar between the 0/8 and 1/8 digital marks. 4.6. Manipulate the Tap 2 slide bar to get an output signal with 3 rails. 4.7.
  • Page 15 Stay within the selected 1/8 segments and do not cross the 1/8 digital marks! Helpful Hint: The accuracy of the pre-emphasis settings depends on the precise calibration of VTH. If the rails are doubled at the selected Tap settings, fine-tune the VTH slide.
  • Page 16 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 4.2. Select the total amplitude and Tap weights. Depending on the required amplitude, several possible weight distributions are shown in Table 4, where values of A correspond to fractions of the full analog amplitude of S Table 4.
  • Page 17 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com Fig. 7. 9-Rail Output Signal Eye for the 1/8 Amplitude GUI Expert Mode 1. To view all the DC control voltages as shown in Fig. 8, left-click on View Raw Data. Fig.
  • Page 18 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 4. Configuration files that include specific settings for desired operational modes can be saved or loaded. 5. To save a current configuration, left-click on File>>Save Configuration. A window will appear and choose where to save this file.

  • Page 19: Troubleshooting

    Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com 7. It is possible to observe and directly manipulate the values of all 32 bits of the 3-wire interface internal registers by selecting Vew/Modify 32 Bit Register from the main GUI menu.
  • Page 20 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com The 32-bit DLL is compiled from CVI Labwindows. Its functions are in C style arguments, and they return integers.
  • Page 21 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com int Tune3(float Tune3Value) Description: Control of Tune 3 / Tap 3 Every increment of 0.125 increases digital tap by one Example 1: 0.35 = digital tap value of 2 (0.125 * 2) and remainder is analog weight (0.35-0.25 = 0.1) Example 2: 0.125 = digital tap 1, analog value = 0...
  • Page 22 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com int Tune1Invert(int Tune1Invert) Description: Turn invert Tune 1 / Tap 1 ON/OFF Argument: ‘1’ INVERT ON, ‘0’ INVERT OFF Returns: ‘1’...
  • Page 23 Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com int ClkMultiplier (float ClkMultValue) Description: Control of clock multiplier delay Argument: float value from -2.2 to 0 Returns: ‘1’...

  • Page 24: Revision History

    Advanced Science And Novel Technology Company, Inc. 27 Via Porto Grande, Rancho Palos Verdes, CA 90275 Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940 www.adsantec.com int get_temperature(void) Description: get temperature Argument: none Returns: (int) returns 12bit ADC reading Revision History Revision Date Changes 1.1.1 07-2016...