Description
This command gets or sets the input impedance of channel 2.
| Syntax |
Parameter |
:INPut<ch>:IMPedance<tr>:CH2 |
{ 50[Ohm] | 1e6[Ohm] } |
| Parameters |
accepted format |
allowed suffixes |
possible Errors |
description |
<ch> |
{ 1 | empty } |
none |
Invalid channel index |
Currently only one channel is supported. Empty means 1 is used as default. |
<tr> |
{ 1 | empty } |
none |
Invalid trace index |
Currently only one trace is supported. Empty means 1 is used as default. |
{ 50[Ohm] | 1e6[Ohm] } |
numeric value (either 50 or 1MA) |
Ohm |
Settings conflict |
The termination impedance. |
| Syntax |
Response |
:INPut<ch>:IMPedance<tr>:CH2? |
{ 50 | 1000000 } |
| Parameters |
accepted format |
description |
<ch> |
{ 1 | empty } |
Currently only one channel is supported. Empty means 1 is used as default. |
<tr> |
{ 1 | empty } |
Currently only one trace is supported. Empty means 1 is used as default. |
| Response value |
description |
{ 50 | 1000000 } |
the termination impedance (either 50Ω or 1MΩ) |
Warning
Only in certain measurement modes certain impedance values can be changed. See Allowed Changes for further details.
Allowed Changes
| measurement type |
CH1 |
CH2 |
GainPhase |
yes |
yes |
S11 |
no |
yes |
S21 |
no |
yes |
Z - ECOupler |
yes |
yes |
Z - EBRidge |
yes |
yes |
Z - IADapter |
no |
no |
Z - P1Reflection |
no |
no |
Z - TSERies |
no |
yes |
Z - TSHunt |
no |
yes |
Z - VCGain |
yes |
yes |
Presets
For presets please refer to Measurement Modes and Default Settings.
Sample usage
Set the impedance of channel 2 to 1MOhm in GainPhase measurement.
var visaSession = new TcpipSocket(VISA_RESOURCENAME);
visaSession.RawIO.Write(":CALC:PAR:DEF GAIN\n");
visaSession.RawIO.Write(":INP:IMP:CH2 1e6\n");
visaSession.write(':CALC:PAR:DEF GAIN\n')
visaSession.write(':INP:IMP:CH2 1e6\n')
:INPut:IMPedance:CH1