hi scott, sorry for replying only now. i've read a little about E element, and i am a little confused because = the syntex shloud be: E xxx n+ n- <VCVS> in+ in- gain <MAX=3D val> <MIN=3D val> + <SCALE=3D val> <TC1=3D val> <TC2=3D val><ABS=3D1> <IC=3D val> and you called the nodes n+ and in+ by the name vector. does it = specifies more than one node? anyway i don't think that an E element is = a good solution for what i am trying to do. to make a long story short: i have already 2 Hspice models of buffers. the input nodes of those = buffers are called drv1in, drv1gnd and drv2in, drv2gnd. in the input of one buffer i want to toggle buffer one with the vector = 010100110, and the second one with 010110111 both with a voltage between = 0 and 1.6V. is there a simple way to do it than: vdrv1in drv1in drv1gnd PWL (0 0, 1.9n 0, 2.1n 1.6, 3.9n 1.6, = 4.1n 0, 5.9n 0, 6.1n 1.6, 7.9n 1.6, 8.1n 0, 11.9n 0, 12.1n 1.6, 15.9n = 1.6, 16.1n 0, 18n 0 R TD=3D1.8n) vdrv2in drv2in drv2gnd PWL ... note that this simulation is for 2 buffers, but i might want to do it = with 30 buffers, which can complicate things Yonatan (Yoni) Tzafrir *Tel: (972) - 3 - 7552300 (T/L: 351) *Fax: (972) - 3 - 6177130 *Mobile: (972) -54- 459469 *E-mail: <mailto:yonitz@xxxxxxxxxxxxx> -----Original Message----- From: Scott McMorrow [mailto:scott@xxxxxxxxxxxxx] Sent: Sunday, April 06, 2003 9:16 PM To: Andrew.Ingraham@xxxxxx Cc: Si-List (E-mail) Subject: [SI-LIST] Re: digital vector Yoni, Yes, just as Andy says, you can use a VCVS configured as a unity gain=20 amplifier to re-reference to the local ground, in the same way that you=20 would use one to re-reference a received signal to it's local ground. Exxxx vector 0 VCVS vector_out local_ground 1 regards scott --=20 Scott McMorrow Teraspeed Consulting Group LLC 2926 SE Yamhill St. Portland, OR 97214 (503) 239-5536 http://www.teraspeed.com Ingraham, Andrew wrote: >I admit to not having used digital vectors.... > >But can't you just use controlled sources(ex: VCVS), to translate from >ground-referenced to floating? > >Andy > > > =20 > >>i am simulating in Hspice, using this digital vector. it is the simple >>way >>to define a vector (or vectors) of zeros and ones. the problem is that >>it >>connects, in the spice netlist, between the node in0 (see file >>attached) and >>gnd. but sometimes one does not want to connect it to gnd but to >>another >>node. is there a way to do it? >> >> =20 >> > >------------------------------------------------------------------ >To unsubscribe from si-list: >si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > >or to administer your membership from a web page, go to: >//www.freelists.org/webpage/si-list > >For help: >si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > >List archives are viewable at: =20 > //www.freelists.org/archives/si-list >or at our remote archives: > http://groups.yahoo.com/group/si-list/messages=20 >Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > =20 > > =20 > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: =20 //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages=20 Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu =20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu