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Getting Result '0' or nil from ocean script

ktarun

Hi,

I generated the ocean script from ADE L and the current expression from ocean script works fine from me. When i tried to used standalone ocean script, i am getting output zero. I know, it is the problem of hierarchical  node name nomenclature. But i am unable to resolve it. I tried every possible situation.

NETLIST 

// Library name: final_tbench
// Cell name: class_nfet-4port_Csb1
// View name: schematic
v5 (0 B) vsource dc=0 mag=1.0 phase=0 type=dc
source1 (G 0) vsource dc=0 mag=0 phase=0 type=dc
source0 (D 0) vsource dc=1e-6 mag=0 phase=0 type=dc
source2 (S 0) vsource mag=0 phase=0 type=dc
vgnd1 (0 vss!) vsource mag=0 phase=0 type=dc
vgnd0 (vdd! 0) vsource dc=vpwr mag=0 phase=0 type=dc
MN0 (D G S B) nsvt w=320.0n l=280.0n m=1 nf=1 as=53.4f ad=54f ps=980n nrs=531.25m

OceanScript

simulator( 'spectre )
design( "/project/class_pfet-4port_Cgd1/spectre/schematic/netlist/netlist")
resultsDir( "/project/class_pfet-4port_Cgd1/spectre/schematic" )
modelFile(
'("/project/amsmodels/spectre/topinclude_nxp.scs" "base")
'("/project/amsmodels/spectre/topinclude_nxp.scs" "top_tt")
'("/project/amsmodels/spectre/topinclude_nxp.scs" "disable_relimo")
'("/project/amsmodels/spectre/topinclude_nxp.scs" "disable_soa")
'("/project/amsmodels/spectre/mix_mode.scs" "default")
'("/project/amsmodels/spectre/mix_mode.scs" "ie")
)
analysis('ac ?start "1" ?stop "1.1" ?dec "1" )
desVar( "gateresglobal" 0 )
desVar( "lsimpackaging" 0 )
desVar( "matching" 1 )
desVar( "swjunexpglobal" 1 )
desVar( "swleakglobal" 1 )
desVar( "swdg" 0 )
desVar( "globalcjaccw" 0 )
desVar( "globalswavena" 0 )
desVar( "swip3lv" 0 )
desVar( "swip3hv" 0 )
desVar( "swip3ehv" 0 )
desVar( "swip3vpnp" 0 )
desVar( "globaldtaxi" 0 )
desVar( "swnpnleakglobal" 1 )
desVar( "swdelvtacglobal" 1 )
desVar( "temp" 27.0 )
desVar( "vbias" 1.2 )
desVar( "vpwr" 2.0 )
envOption(
'enableNoiseRefactor nil
'analysisOrder list("ac")
)
option( 'checklimitdest "psf"
)
saveOption( 'subcktprobelvl "" )
saveOption( 'nestlvl "" )
temp( 27 )
run()

Cgd1=value(abs(imag((IF("/source1/PLUS") / (2 * 3.14159 * 1)))) 1)      ; actual ADE L generated expression
ocnPrint(Cgd1)

I am trying to use the Cgd1=value(abs(imag((IF("G") / (2 * 3.14159 * 1)))) 1)  for standalone netlist. This is giving me zero result.

My theoretical expression is Cgd1 = imag(Ig) /2*pi*f

Please help. Trying to fix this issue from last week

  • Andrew Beckett

    You probably just need to use the netlist name - note that "G" won't work because that's a net name not a terminal name. I suspect  you want:

    Cgd1=value(abs(imag((IF("source1:p") / (2 * 3.14159 * 1)))) 1)      ; actual ADE L generated expression

    or

    Cgd1=value(abs(imag((i("source1:p" ?result 'ac) / (2 * 3.14159 * 1)))) 1)      ; actual ADE L generated expression

    You could also probably use source1:1 (to get the first terminal of the source).

    Regards,

    Andrew

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