Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p144
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 422846–425650

optical insertion loss equal to or less than 3 dB and having any of the following:
a. A 'half‑wave voltage' ('Vπ') less than 2.7 V when measured at a frequency of 1 GHz or below; or
b. A 'Vπ' of less than 4 V when measured at a frequency of more than 1 GHz; or
2. A maximum operating frequency equal to or greater than 20 GHz, an optical insertion loss equal to or less than 3 dB and having any of the following:
a. A 'Vπ' less than 3.3 V when measured at a frequency of 1 GHz or below; or
b. A 'Vπ' less than 5 V when measured at a frequency of more than 1 GHz.
Note: 3A001.i. includes electro‑optic modulators having optical input and output connectors (e.g., fibre‑optic pigtails).
Technical Note:
For the purposes of 3A001.i., a 'half‑wave voltage' ('Vπ') is the applied voltage necessary to make a phase change of 180 degrees in the wavelength of light propagating through the optical modulator.
3. A. 002. General purpose "electronic assemblies", modules and equipment, as follows:
a. Recording equipment and oscilloscopes, as follows:
1. Not used;
2. Not used;
3. Not used;
4. Not used;
5. Not used;

                   N.B. For waveform digitizers and transient recorders, see 3A002.h.

6. Digital data recorders having all of the following:
                  a. A sustained 'continuous throughput' of more than 6.4 Gbit/s to disk or solid‑state drive memory; and
                  b. "Signal processing" of the radio frequency signal data while it is being recorded;

         Technical Notes:

              For the purposes of 3A002.a.6.:
              1. For recorders with a parallel bus architecture, the 'continuous throughput' rate is the highest word rate multiplied by the number of bits in a word.
              2. 'Continuous throughput' is the fastest data rate the instrument can record to disk or solid-state drive memory without the loss of any information while sustaining the input digital data rate or digitizer conversion rate.
7. Real‑time oscilloscopes having a vertical root‑mean‑square (rms) noise voltage of less than 2% of full‑scale at the vertical scale setting that provides the lowest noise value for any input 3dB bandwidth of 60 GHz or greater per channel;
                  Note: 3A002.a.7. does not apply to equivalent‑time sampling oscilloscopes.
b. Not used;
c. "Signal analysers" as follows:
1. "Signal analysers" having a 3 dB resolution bandwidth (RBW) exceeding 40 MHz anywhere within the frequency range exceeding 31.8 GHz but not exceeding 37 GHz;
2. "Signal analysers" having a Displayed Average Noise Level (DANL) less (better) than –150 dBm/Hz anywhere within the frequency range exceeding 43.5 GHz but not exceeding 90 GHz;
3. "Signal analysers" having a frequency exceeding 90 GHz;
4. "Signal analysers" having all of the following:
3. A. 002. c. 4.