transducer to ltspice

Thread Starter

mdidomenico

Joined Mar 3, 2019
18
i'd like to simulate this airmar transducer in ltspice

http://airmar.com/uploads/techdata/200a.pdf

from reading around this forum and other sites it seems i can electrically simulate the transducer using an LCR network of sorts. however, what is not clear to me is all the value's i need to put into ltspice. the data sheet shows some of this, but i don't understand how/which data to pull from the sheet for each of the values. well that's not entirely accurate i understand the series/parallel resistance and capacitance figures, but what value would i use for the inductor?
 

Thread Starter

mdidomenico

Joined Mar 3, 2019
18
Thanks. however, when i try to reproduce it, i get.

Error on line 7 : rser= 110 lser= 0.175070437401085 rpar= 1100 cpar= 1.47e-009
Unknown parameter "rpar"
ltra: using linear interpolation because trytocompact option specified
WARNING: Node N002 is floating.
WARNING: Node LSER is floating.

WARNING: Less than two connections to node 110. This node is used by RSER.
WARNING: Less than two connections to node LSER. This node is used by RSER.

i'm sure i've done something wrong, but i don't know what.
 

Thread Starter

mdidomenico

Joined Mar 3, 2019
18
if i remove the Rser={Rser} Lser={Ls} ... line from the schematic, then the plot runs, but the plot doesn't look like yours. instead of having curves it just looks like an X crossed at 200kHz. and i have dB on the left vs Ohms and on the right i'm at -89 deg
 
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