In thousands, except par value amounts

Exhibit 10.37

AMENDMENT NO. 5
TO
SECOND AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

     THIS AMENDMENT NO. 5 to Second Amended and Restated Loan and Security Agreement (this “Amendment”) is entered as of the 4th day of March, 2009, by and between Silicon Valley Bank (“Bank”) and Harmonic, Inc., a Delaware corporation (“Borrower”) whose address is 549 Baltic Way, Sunnyvale, California 94089.

Recitals

     A. Bank and Borrower have entered into that certain Second Amended and Restated Loan and Security Agreement dated as of December 17, 2004, as amended by that certain First Amendment to Second Amended and Restated Loan and Security Agreement dated December 16, 2005, that certain Amendment No. 2 to Second Amended and Restated Loan and Security Agreement dated December 15, 2006, that certain Amendment No. 3 to Second Amended and Restated Loan and Security Agreement dated March 15, 2007 and as amended by that certain Amendment No. 4 to Second Amended and Restated Loan and Security Agreement dated March 12, 2008 (as may be further amended, modified, supplemented or restated, the “Loan Agreement”).

     B. Bank has extended credit to Borrower for the purposes permitted in the Loan Agreement.

     C. Borrower has requested that Bank amend the Loan Agreement to extend the maturity date.

     D. Bank has agreed to so amend certain provisions of the Loan Agreement, but only to the extent, in accordance with the terms, subject to the conditions and in reliance upon the representations and warranties set forth below.

Agreement

     Now, Therefore, in consideration of the foregoing recitals and other good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, and intending to be legally bound, the parties hereto agree as follows:

          1. Definitions. Capitalized terms used but not defined in this Amendment shall have the meanings given to them in the Loan Agreement.

          2. Amendment to Loan Agreement.

               2.1 Section 6.2 (Financial Statements, Reports, Certificates). Section 6.2(b) is amended and restated in its entirety and replaced with the following:

          (b) Borrower will deliver to Bank a Compliance Certificate with the quarterly financial statements within 45 days after the last day of each of the first three

fiscal quarters and a Compliance Certificate upon the earlier of delivery of the report on Form 10-K or 120 days after the last day of the fourth quarter of the fiscal year.

               2.2 Section 13 (Definitions). The following term and its definition set forth in Section 13.1 is amended in its entirety and replaced with the following:

          “Maturity Date” is March 3, 2010.

               2.3 Exhibit C. Exhibit C to the Loan Agreement is replaced in its entirety by Exhibit A hereto.

          3. Limitation of Amendments.

               3.1 The amendments set forth in Section 2, above, are effective for the purposes set forth herein and shall be limited precisely as written and shall not be deemed to (a) be a consent to any amendment, waiver or modification of any other term or condition of any Loan Document, or (b) otherwise prejudice any right or remedy which Bank may now have or may have in the future under or in connection with any Loan Document.

               3.2 This Amendment shall be construed in connection with and as part of the Loan Documents and all terms, conditions, representations, warranties, covenants and agreements set forth in the Loan Documents, except as herein amended, are hereby ratified and confirmed and shall remain in full force and effect.

          4. Representations and Warranties. To induce Bank to enter into this Amendment, Borrower hereby represents and warrants to Bank as follows:

               4.1 Immediately after giving effect to this Amendment (a) the representations and warranties contained in the Loan Documents are true, accurate and complete in all material respects as of the date hereof (except to the extent such representations and warranties relate to an earlier date, in which case they are true and correct as of such date), and (b) no Event of Default has occurred and is continuing;

               4.2 Borrower has the power and authority to execute and deliver this Amendment and to perform its obligations under the Loan Agreement, as amended by this Amendment;

               4.3 The organizational documents of Borrower delivered to Bank on December 17, 2004 remain true, accurate and complete and have not been amended, supplemented or restated and are and continue to be in full force and effect;

               4.4 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, have been duly authorized;

               4.5 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, do not and will not contravene (a) any law or regulation binding on or affecting Borrower, (b) any contractual restriction with a Person binding on Borrower, (c) any order, judgment or decree of any court or other governmental or public body or authority, or subdivision thereof, binding on Borrower, or (d) the organizational documents of Borrower;

               4.6 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, do not require any order, consent, approval, license, authorization or validation of, or filing, recording or registration with, or exemption by any governmental or public body or authority, or subdivision thereof, binding on either Borrower, except as already has been obtained or made; and

               4.7 This Amendment has been duly executed and delivered by Borrower and is the binding obligation of Borrower, enforceable against Borrower in accordance with its terms, except as such enforceability may be limited by bankruptcy, insolvency, reorganization, liquidation, moratorium or other similar laws of general application and equitable principles relating to or affecting creditors’ rights.

          5. Counterparts. This Amendment may be executed in any number of counterparts and all of such counterparts taken together shall be deemed to constitute one and the same instrument.

          6. Effectiveness. This Amendment shall be deemed effective as of March 4, 2009 upon (a) the due execution and delivery to Bank of this Amendment by each party hereto and (b) Borrower’s payment to Bank of all Bank Expenses (including all reasonable attorneys’ fees and reasonable expenses) incurred through the date of this Amendment.

[Signature page follows.]

     In Witness Whereof, the parties hereto have caused this Amendment to be duly executed and delivered as of the date first written above.

BANK						BORROWER
Silicon Valley Bank						Harmonic, Inc.
By:		/s/ Nick Tsiagkas				By:		/s/ Robin N. Dickson
Name:		Nick Tsiagkas				Name:		Robin N. Dickson
Title:		Relationship Manager — Corporate				Title:		CFO
		Technology Banking

[Signature page to Amendment No. 5]

EXHIBIT A

COMPLIANCE CERTIFICATE

TO:		SILICON VALLEY BANK 3003 Tasman Drive Santa Clara, CA 95054
FROM:		HARMONIC INC. 549 Baltic Way Sunnyvale, CA 94089

     The undersigned authorized officer of Harmonic Inc. (“Borrower”) certifies that under the terms and conditions of the Loan and Security Agreement between Borrower and Bank (the “Agreement”), (i) Borrower is in complete compliance for the period ending                      with all required covenants, except as noted below, and (ii) all representations and warranties in the Agreement are true and correct in all material respects on this date. Attached are the required documents supporting the certification. The undersigned officer certifies that such documents were prepared in accordance with Generally Accepted Accounting Principles (GAAP) consistently applied from one period to the next, except as explained in an accompanying letter or footnotes. The undersigned officer acknowledges that no borrowings may be requested at any time or date of determination that Borrower is not in compliance with any of the terms of the Agreement, and that compliance is determined not just at the date this certificate is delivered.

Please indicate compliance status by circling Yes/No under “Complies” column.

Reporting Covenant		Required		Complies
Compliance certificate		Quarterly within 45 days,except together with report on Form 10-K following Q4		Yes		No
Quarterly financial statements		Quarterly within 45 days		Yes		No
Annual financial statements (Audited)		FYE within 120 days		Yes		No

Financial Covenant		Required				Actual		Complies
Maintain at all times:
Unrestricted cash and cash equivalents		$40,000,000						Yes		No