Delta MMC120 - Manual (Page 16)

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both the '+Int' and '-Int' between the transducer and the MMC120 for the interrogate
signal, and connect both the '+Ret' and '-Ret' between the transducer and the MMC120
for the return signal. Connect the transducer DC ground to MDT Common.
For single-ended transducer with positive interrogation, connect the transducer '-
interrogation in' wire to the ‘MDT Cmn’ pin and the transducer '+ interrogation in' wire
to the '+ Int' pin. CONNECT NOTHING TO THE '-Int' PIN OF THE MMC120.
Connect the transducer return plus wire to the '+Ret’ pin on the MMC120 and the
transducer return common wire to ‘MDT Cmn’ on the MMC120. CONNECT
NOTHING TO THE '-Ret' PIN OF THE MMC120.
Temposonics I transducer users:
For the negative interrogation version of this transducer, connect the transducer '+
interrogation in' wire to the ‘MDT Cmn’ pin and the transducer '- interrogation in' wire to
the '-Int' pin. CONNECT NOTHING TO THE '+Int' PIN OF THE MMC120. Connect
the transducer return plus wire to the '+Ret’ pin on the MMC120 and the transducer
return common wire to ‘MDT Cmn’ on the MMC120. CONNECT NOTHING TO THE
'-Ret' PIN OF THE MMC120.