open
set pol c+ off -7
otf 1010 1070 2 delay 10
file ZnE_plus
start

set pol c+ off -7
otf 1010 1070 2 delay 10
file ZnE_plus
start

set pol c- off -3
otf 1010 1070 2 delay 10
file ZnE_minus
start

set pol c- off -3
otf 1010 1070 2 delay 10
file ZnE_minus
start

set pol c+ off -7
otf 1010 1070 2 delay 10
file ZnE_plus
start

set pol c+ off -7
otf 1010 1070 2 delay 10
file ZnE_plus
start

set pol c- off -3
otf 1010 1070 2 delay 10
file ZnE_minus
start

set pol c- off -3
otf 1010 1070 2 delay 10
file ZnE_minus
start

set pol c+ off -7
otf 1010 1070 2 delay 10
file ZnE_plus
at_end close
start