Hi all,

I did parametric sweep in Hspice as following:

.param vctr=0.6
v16 vctr_vco 0 DC=vctr
.TRAN 200ps 100ns sweep vctr 0 1 0.1

the result shows:

**error**:  element     0:vctr             has been
    referenced but not defined   id=  9

But I used the same way to simulate another ckt, it OK and didn't encounter this problem.

Any hint on this problem is appreciated.

Best!

Thank you for your help. The netlist is as following. It's a vco.

.option acct post probe
.protect
.lib 'test.lib' TT
.lib 'test.lib' TT_3V
.unprotect
.PARAM vdd1p8=1.8
.param vctr_para=0.6


*.option acct post probe
*.protect
*.lib 'MS018_v1p2.lib' TT
*.lib 'MS018_v1p2.lib' RES_TT
*.unprotect

.subckt delay_vco avdd1p8v avss1p8v biasn inn inp outn outp
c2 outp outn 3.52e-15
c1 outn avss1p8v 10.5e-15
c0 outp avss1p8v 10.5e-15
mp6 outn outn avdd1p8v avdd1p8v p L=500e-9 W=2.25e-6 AD=1.08e-12 AS=1.08e-12 PD=3.21e-6 PS=3.21e-6 M=3
mp7 outp outp avdd1p8v avdd1p8v p L=500e-9 W=2.25e-6 AD=1.08e-12 AS=1.08e-12 PD=3.21e-6 PS=3.21e-6 M=3
mp28 outp outn avdd1p8v avdd1p8v p L=700e-9 W=1.9e-6 AD=912e-15 AS=912e-15 PD=2.86e-6 PS=2.86e-6 M=1
mp29 outn outp avdd1p8v avdd1p8v p L=700e-9 W=1.9e-6 AD=912e-15 AS=912e-15 PD=2.86e-6 PS=2.86e-6 M=1
mn6 net071 biasn avss1p8v avss1p8v n L=2e-6 W=5e-6 AD=2.4e-12 AS=2.4e-12 PD=5.96e-6 PS=5.96e-6 M=16
mn0 outn inp net071 avss1p8v n L=300e-9 W=4e-6 AD=1.92e-12 AS=1.92e-12 PD=4.96e-6 PS=4.96e-6 M=2
mn1 outp inn net071 avss1p8v n L=300e-9 W=4e-6 AD=1.92e-12 AS=1.92e-12 PD=4.96e-6 PS=4.96e-6 M=2
.ends delay_vco



.subckt vco avdd1p8v avss1p8v end3p3v ibn_10u outn outp vctr
xi6 avdd1p8v avss1p8v biasn net53 net49 net45 net41 delay_vco
xi5 avdd1p8v avss1p8v biasn net64 net66 net53 net49 delay_vco
xi7 avdd1p8v avss1p8v biasn net45 net41 outn outp delay_vco
xi0 avdd1p8v avss1p8v biasn outp outn net64 net66 delay_vco
r0 net0127 net0154 14k
r1 vcm avss1p8v 23.7k
r5 biasp net042 10k
mn2 avss1p8v vcm avss1p8v avss1p8v n L=2e-6 W=12.48e-6 M=50
mn0 biasn biasn avss1p8v avss1p8v n L=2e-6 W=5e-6 M=8
mn1 net0151 net0151 avss1p8v avss1p8v n L=2e-6 W=5e-6 AD=2.4e-12 AS=2.4e-12 PD=5.96e-6 PS=5.96e-6 M=8
mn15 net046 net046 avss1p8v avss1p8v n L=3e-6 W=4e-6 AD=1.92e-12 AS=1.92e-12 PD=4.96e-6 PS=4.96e-6 M=2
mn17 net042 net046 avss1p8v avss1p8v n L=3e-6 W=4e-6 AD=1.92e-12 AS=1.92e-12 PD=4.96e-6 PS=4.96e-6 M=5
mp4 vcm biasp avdd1p8v avdd1p8v p L=1.5e-6 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=12
mp1 net0127 biasp avdd1p8v avdd1p8v p L=1.5e-6 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=12
mp2 net0151 vctr net0154 avdd1p8v p L=500e-9 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=4
mp19 net042 net042 avdd1p8v avdd1p8v p L=1.5e-6 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=12
mp8 avdd1p8v biasp avdd1p8v avdd1p8v p L=2e-6 W=10.8e-6 AD=5.184e-12 AS=5.184e-12 PD=11.76e-6 PS=11.76e-6 M=100
mp3 biasn vcm net0127 avdd1p8v p L=500e-9 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=4
mp0 net0154 biasp avdd1p8v avdd1p8v p L=1.5e-6 W=10e-6 AD=4.8e-12 AS=4.8e-12 PD=10.96e-6 PS=10.96e-6 M=12
mn18 ibn_10u end3p3v net046 avss1p8v NCH3 L=400e-9 W=4e-6 AD=1.92e-12 AS=1.92e-12 PD=4.96e-6 PS=4.96e-6 M=1
.ends vco



.ic outn_vco=1.8 outp_vco=0.1
iv5 avdd1p8v ibn_10u DC=10e-6
xi0 avdd1p8v avss1p8v end ibn_10u outn_vco outp_vco vctr_vco vco
v0 end 0 DC=3.3
v2 avdd1p8v 0 DC=vdd1p8
v3 avss1p8v 0 DC=0
v16 vctr_vco 0 DC=vctr_para


.TEMP 60
.TRAN 200ps 100ns sweep vctr_para 0 1 0.1

.probe tran v(o1)
.END


The simulation result shows:
**error**:  element     0:vctr_para        has been
    referenced but not defined   id=  9


Thanks in advance. This problem has bothered me for a long time.

James

Microant:

Thanks very much. That's the problem you indicated. After I changed the name of vctr, it worked.