EXHIBIT 10.34

                          LOAN MODIFICATION AGREEMENT

     This Loan Modification Agreement is entered into as of December 17, 2001
between Harmonic, Inc. ("Borrower") and Silicon Valley Bank ("Bank").

1.   DESCRIPTION OF EXISTING INDEBTEDNESS: Among other indebtedness which may
be owing by Borrower to Bank, Borrower is indebted to Bank pursuant to, among
other documents, a Second Amended and Restated Loan and Security Agreement,
dated March 5, 1999, as may be amended from time to time, (the "Loan
Agreement"). The Loan Agreement provided for, among other things, a Revolving
Commitment in the original principal amount of Ten Million Dollars
($10,000,000). Defined terms used but not otherwise defined herein shall have
the same meanings as in the Loan Agreement.

2.   DESCRIPTION OF COLLATERAL. Repayment of the Indebtedness is secured by the
Collateral as described in the Loan Agreement and in Intellectual Property
Security Agreement dated May 18, 2001.

Hereinafter, the above-described security documents and guaranties, together
with all other documents securing repayment of the Indebtedness shall be
referred to as the "Security Documents". Hereinafter, the Security Documents,
together with all other documents evidencing or securing the Indebtedness shall
be referred to as the "Existing Loan Documents".

3.   DESCRIPTION OF CHANGE IN TERMS.

     A.   Modification(s) to Loan Agreement

          1.   The following defined terms under Section 1.1 entitled
               "Definitions" are hereby amended to read as follows:

               "Revolving Commitment" means a Credit Extension of up to
               $10,000,000 increasing to $12,500,000, upon (i) Borrower's close
               of new equity financing in an amount of $10,000,000 (net of
               final tax liability related to DiviCom acquisition), or (ii)
               Borrower's close of new equity financing in a minimum amount of
               $25,000,000.

               "Revolving Maturity Date" is April 4, 2003.

               "Term Loan Facility" means a Credit Extension of up to
               $6,000,000.

          2.   Sub letter (b) entitled "Interest Rate" under Section 2.1.5
               entitled "Term Loan Facility" is hereby amended to read as
               follows:

               Except as set forth in Section 2.3 (b), each Term Loan Advances
               shall bear interest at a FIXED rate equal to a per annum rate of
               3.00 percentage points above the then current Prime Rate. Any
               amounts prepaid shall be subject to the Prepayment Penalty.

          3.   Sub letter (a) of Section 6.3 entitled "Financial Statements,
               Reports, Certificates" is hereby amended to read as follows:

               (a)  as soon as possible, but in no event later than 45 days
                    after the end of each month, a company prepared consolidated
                    balance sheet and income statement covering Borrower's
                    consolidated operation during such period, in a form and
                    certified by an officer of Borrower reasonably acceptable to
                    Bank.

          4.   The third paragraph of Section 6.3 entitled "Financial
               Statements, Reports, Certificates" is hereby amended to read as
               follows:



                    Within 30 days after the last day of each month, Borrower
                    will deliver to Bank with the monthly financial statements a
                    Compliance Certificate signed by a Responsible Officer.

               5.   Section 6.9 entitled "Debt- Net Worth Ratio" is hereby
                    deleted in its entirety and replaced with Section 6.9
                    entitled "Tangible Net Worth" to read as follows:

                    TANGIBLE NET WORTH. Borrower shall maintain on a quarterly
                    basis, a Tangible Net Worth of at least $50,000,000.

               6.   Section 6.10 entitled "Maximum Loss" is hereby amended to
                    read as follows:

                    Borrower may suffer losses (excluding non-cash expenses
                    associated with acquisition costs) not to exceed
                    $15,000,000 in any fiscal quarter.

               7.   The following Section 6.13 entitled "Minimum Balance Sheet
                    Cash" is hereby incorporated to read as follows:

                    MINIMUM BALANCE SHEET CASH. Borrower shall maintain on a
                    monthly basis, cash on balance sheet equal to 1.5 times all
                    Bank commitments to Borrower.

4.   CONSISTENT CHANGES. The Existing Loan Documents are hereby amended
wherever necessary to reflect the changes described above.

5.   PAYMENT OF LOAN FEE. Borrower shall pay to Bank a fee in the amount of
Five Thousand Dollars ($5,000) (the "Loan Fee") plus all out of pocket expenses.

6.   NO DEFENSES OF BORROWER. Borrower (and each guarantor and pledgor signing
below) agrees that, as of the date hereof, it has no defenses against the
obligations to pay any amounts under the Indebtedness.

7.   CONCERNING REVISED ARTICLE 9 OF THE UNIFORM COMMERCIAL CODE. The Borrower
affirms and reaffirms that notwithstanding the terms of the Security Documents
to the contrary, (i) that the definition of "Code", "UCC" or "Uniform
Commercial Code" as set forth in the Security Documents shall be deemed to mean
and refer to "the Uniform Commercial Code as adopted by the State of Delaware,
as may be amended and in effect from time to time and (ii) the Collateral is
all assets of the Borrower. In connection therewith, the Collateral shall
include, without limitation, the following categories of assets as defined in
the Code: goods (including inventory, equipment and any accessions thereto),
instruments (including promissory notes), documents, accounts (including
health-care-insurance receivables, and license fees), chattel paper (whether
tangible or electronic), deposit accounts, letter-of-credit rights (whether or
not the letter of credit is evidenced by a writing), commercial tort claims,
securities and all other investment property, general intangibles (including
payment intangibles and software), supporting obligations and any and all
proceeds of any thereof, wherever located, whether now owned or hereafter
acquired.

8.   CONTINUING VALIDITY. Borrower (and each guarantor and pledgor signing
below) understands and agrees that in modifying the existing Indebtedness, Bank
is relying upon Borrower's representations, warranties, and agreements, as set
forth in the Existing Loan Documents. Except as expressly modified pursuant to
this Loan Modification Agreement, the terms of the Existing Loan Documents
remain unchanged and in full force and effect. Bank's agreement to modifications
to the existing Indebtedness pursuant to this Loan Modification Agreement in no
way shall obligate Bank to make any future modifications to the Indebtedness.
Nothing in this Loan Modification Agreement shall constitute a satisfaction of
the Indebtedness. It is the intention of Bank and Borrower to retain as liable
parties all makers and endorsers of Existing Loan Documents, unless the party is
expressly released by Bank in writing. Unless expressly released herein, no
maker, endorser, or guarantor will be released by virtue of this Loan
Modification

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Agreement. The terms of this paragraph apply not only to this Loan Modification
Agreement, but also to all subsequent loan modification agreements.

9.      CONDITIONS. The effectiveness of this Loan Modification Agreement is
conditioned upon Bank's receipt of Loan Fee.

BORROWER:                               BANK:

HARMONIC, INC.                          SILICON VALLEY BANK

By: /s/ ANTHONY J. LEY                  By: /s/ JOHN M. SWIFT
   -------------------------------         ------------------------------------
Name: Anthony J. Ley                    Name: John M. Swift
     -----------------------------           ----------------------------------
Title: Chairman, President and CEO      Title: Senior Vice Analyst
      ----------------------------            ---------------------------------



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