The JIB and J2B Signal Generators, like their
the J1 and J2, are two similar instruments which provide
sinusoidal outputs in the frequency range 15c/s to 5 0 k c
separate output arrangements with continuous level control
on each instrument. One output is of 600S2 impedance and
isolated from earth, having a maximum output level of 1W; the
alternative output has an impedance of 5fi connected to
earth and with
an output level of at least 500 milliwatts.
The JIB version of the instrument uses a calibrated output
give an indication of output level, while the J2B output
level is indicated
on a front panel meter .
Each instrument contains a resistance-capacitance Wien bridge
oscillator which is connected to the output stage via a
. The inherent stability of the oscillator and the use of
circuits contribute to an output which is substantially
the whole frequency range. Overall distortion at full output
is less than 2% (34dB down on fundamental).