  We reanalyze data of HEAO1/A2 -- Cosmic X-ray Experiment -- in order to
repeat the measurements of the cosmic X-ray background (CXB) intensity and
accurately compare this value with other measurements of the CXB. We used the
data of MED, HED1 and HED3 detectors in scan mode, that allowed us to measure
effective solid angles and effective areas of detectors self consistently, in
the same mode as the CXB intensity was measured. We obtained the average value
of the CXB intensity is 1.96+/-0.10 x10^{-11} erg/s/cm2/deg2 in the energy band
2-10 keV, or 9.7+/-0.5 phot/s/cm2/sr at 1 keV assuming the power law spectral
shape with photon index Gamma=1.4 in this energy band. We compare the obtained
measurements with those obtained by different instruments over last decades.
