Planning Group Procurement and Supply Department NTT, Marukin Bancho Bldg. 5F 6-28 Rokuban-cho Chiyoda-ku, Tokyo 102 Japan

52 -- BIT ERROR MEASURING EQUIPMENT DUE 090495. POC NTT America, Inc., Corporate Headquarters, 101 Park Avenue, 41st Floor New York, NY 10178, 212/661-0810 also NTT America Inc., Pacific and Western Division 800 El Camino Real West, Suite 103 Mountain View, CA 94040, 415/940-6565. This public notice is to request suppliers to provide NTT with general referential information on similar products or technology prior to procurement of the intended product (mentioned below) by NTT. This public notice is also to request that any suppliers wishing to participate as a subcontractor in the procurement program of this product should declare their intentions to that effect. This public notice is not intended to guarantee public notification of procurement of the product. (1) Name: Bit error measuring equipment. (2) Overview: This measuring equipment measures the bit error rate and noise margin in a digital radio circuit and its components. This equipment, consisting of the transmitter, the receiver, noise generator and clock generator, measures the bit error rates of unipolar patterns. The transmitter generates 215-1 bit and 223-1 bit pseudo random patterns with the feedback shift register and provides: 6 sets of eight channels of unipolar pattern output and one clock output (output signal 1); 1 set of three channels of unipolar pattern output and one clock output (output signal 2); 1 set of one channel of unipolar pattern output and one clock output (output signal 3); 1 set of two channels of unipolar pattern output and one clock output (output signal 4). The receiver receives the eight channels of unipolar pattern output and one clock output (input signal 1); or the three channels of unipolar pattern output and one clock output (input signal 2); or the one channel of unipolar pattern output and one clock output (input signal 3); or the two channels of unipolar pattern output and one clock output (input signal 4). It then compares the bits received over all channels with the reference pseudo random pattern synchronized with 215-1 and 223-1 bits, and detects the errors simultaneously. It counts and displays the errors detected in each channel, and at the same time, it counts and displays the total errors received over any channel. It also functions to count the error pulses that were input externally, and displays the detected errors as bit error rates. It functions as a recorder to record the measured results. The transmitter and receiver provide GP-IB and RS-232C interfaces; sets all major switches, except for the power switch, and output the measured data. The noise generator is used to measure the noise margin of the repeater equipment. It generates gauss noise and adds it to the main signals in the intermediate frequency band, and changes the S/N ratio by altering the noise level. A band pass filter is inserted into the noise, as required. The clock generator provides a clock to the equipment equipped with an external clock input terminal. Operating Environment Ambient temperature 10 to 40 deg.c (3) Estimated procurement quantity: about 10 sets/year (This quantity is the current estimate; however, it may change during public notification of procurement.) 4. Description of the Request for Information: Applicants are requested to supply NTT with the following information on similar products, or on technology relating, to the product previously-mentioned above. (However, entire supplied information will be regarded as non-secret information and may be disclosed to third parties in the form of, for example, inclusion in the corresponding PROCUREMENT DOCUMENTATION, or may become available to third parties. Regardless in such cases, NTT will not assume any responsibility for possible outcomes arising from the management, disclosure, or use of the supplied information.) (i) Technical information: (i) -a. Measurement Range, (i) -b. Measurement Accuracy, (i) -c. Output Conditions. (ii) Prices: Price per unit. (iii) Standard time of delivery after ordering (iv) Sales Records (v) Others (Active proposals likely to become useful for increasing the businesses of NTT) (v) -a. Demonstrating the manner and the period of dealing with equipment breakdown, and the manner and the period of maintenance (v) -b. Spontaneous proposals that will be of interest to NTT. (5) Request for Declaration of the Intention of Subcontracting: Any suppliers wishing to participate as a subcontractor in the product procurement program of NTT are requested to supply NTT with the information listed below. After preparing a list of supplied information, NTT will provide the lists to applicants interested in obtaining it; to those who have responded to the request for supply of the information listed in Item (4); and to those who have purchased the PROCUREMENT DOCUMENTATION to procurement of the product. However, NTT will not assume any responsibility for possible outcomes arising from supply of the list. (i) Name of the applicant (ii) Place of contact (Address, name of the person in charge, telephone number, and facsimile number) (iii) The products and/or services that the applicant can supply as a subcontractor (6) Time Limit of Acceptance of the Offers for Supply of Information and for Declaration of the Intention of Subcontracting; 3:00 p.m., September 4, 1995 (This time limit also applies to mailed offers) (7) Language To Be Used: Japanese or English. (215)

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