仿真時總是報:Less than 2 connections at node X_U34.1
U34是自己建的模型。
請教大家:報錯“Less than 2 connections at node”
**** INCLUDING dac2-SCHEMATIC1.net ****
* source DAC2
V_V5 N05552 0
+PULSE 1 2 1us 0.5us 0.5us
C_C3 N05388 N04980 10000n
V_V1 N05268 0 15Vdc
R_R7 N05384 N05086 820
R_R4 N05012 N05388 1.5k
C_C2 0 N05384 5.6n
R_R3 N05552 N05012 1k
R_R2 0 N05534 1k
C_C5 N04942 N05388 1n
R_R5 N05384 0 1.5k
C_C4 N05012 0 5.6n
R_R1 N05012 N04942 820
R_R6 0 N04980 100k
V_V2 0 N05372 15Vdc
R_R8 N05534 N04980 560
R_R9 0 N05384 1k
C_C1 0 N05086 1n
X_U36 N05086 N04942 N05268 N05372 N05388 OPA627
**** RESUMING dac2-schematic1-dac2.sim.cir ****
.END
ERROR -- Less than 2 connections at node X_U36.1
誰能告訴我要怎么解決。