Electronics Electronics

Recording equipment, as follows, and specially designed test tape therefor:

1. 1.

   Analogue instrumentation magnetic tape recorders, including those permitting the recording of digital signals (e.g.,using a high density digital recording (HDDR) module), having any of the following:

   1. a.

      A bandwidth exceeding 4MHz per electronic channel or track;

   2. b.

      A bandwidth exceeding 2MHz per electronic channel or track and having more than 42 tracks; or

   3. c.

      A time displacement (base) error, measured in accordance with applicable Inter Range Instrumentation Group (IRIG) or Electronic Industries Association (EIA) documents, of less than ±0·1 microsecond;

2. 2.

   Digital video magnetic tape recorders having a maximum digital interface transfer rate exceeding 180Mbit/s, except: those specially designed for television recording as standardized or recommended by the International Radio Consultative Committee (CCIR) or the International Technical Commission (IEC) for civil television applications;

3. 3.

   Digital instrumentation magnetic tape data recorders having any of the following characteristics:

   1. a.

      A maximum digital interface transfer rate exceeding 60Mbit/s and employing helical scan techniques;

   2. b.

      A maximum digital interface transfer rate exceeding 120Mbit/s and employing fixed head techniques; or

   3. c.

      Space qualified;

   4. d.

      Note: Sub—head a.3. of this entry does not specify analogue magnetic tape recorders equipped with HDDR conversion electronics and configured to record only digital data.

4. 4.

   Equipment, with a maximum digital interface transfer rate exceeding 60Mbit/s, designed to convert digital video magnetic tape recorders for use as digital instrumentation data recorders;

Frequency synthesiser electronic assemblies having a frequency switching time from one selected frequency to another of less than 1ms;

Signal analysers, as follows:

1. 1.

   Capable of analysing frequencies exceeding 31GHz;

2. 2.

   Dynamic signal analysers with a real—time bandwidth exceeding 25·6kHz;

   except:

   Those using only constant percentage bandwidth filters (also known as octave or fractional octave filters);

Frequency synthesised signal generators producing output frequencies, the accuracy and short term and long term stability of which are controlled, derived from or disciplined by the internal master frequency, and having any of the following:

1. 1.

   A maximum synthesised frequency exceeding 31GHz;

2. 2.

   A frequency switching time from one selected frequency to another of less than 1ms; or

3. 3.

   A single sideband (SSB) phase noise better than −(126 + 20 log₁₀F − 20 log₁₀f) in dBc/Hz, where F is the off—set from the operating frequency in Hz and f is the operating frequency in MHz;

   Note: Head d. of this entry does not specify equipment in which the output frequency is either produced by the addition or subtraction of two or more crystal oscillator frequencies, or by an addition or subtraction followed by a multiplication of the result.

Network analysers with a maximum operating frequency exceeding 31GHz;

Note: Head e. of this entry does not specify swept frequency network analysers with a maximum operating frequency not exceeding 40GHz and which do not contain a data bus for remote control interfacing.

Microwave test receivers with both of the following:

1. 1.

   A maximum operating frequency exceeding 31GHz; and

2. 2.

   Capable of measuring amplitude and phase simultaneously;

Atomic frequency standards having either of the following characteristics:

1. 1.

   Long term stability (aging) less (better) than 1 x 10¹¹−/month; or

   Note: Sub—head g.1. of this entry does not specify non—space qualified rubidium standards.

2. 2.

   Space qualified;

Emulators for microcircuits specified in sub—heads a.3. or a.9. of entry 3A001;

Note: Head h. of this entry does not specify emulators designed for a family which contains at least one device not specified in sub—heads a.3. or a.9. of entry 3A001.