# :SYSTem:SIGNal:TYPE?

Information Commands

- :SYSTem:DATE?
- :SYSTem:EMBedded?
- :SYSTem:HELP:HEADers?
- :SYSTem:HREVision?
- :SYSTem:MODel?
- :SYSTem:OPTions?
- :SYSTem:OSYStem?
- :SYSTem:PERSona:MANufacturer
- :SYSTem:PERSona:MANufacturer:DEFault
- :SYSTem:PERSona:MODel
- :SYSTem:PERSona:MODel:DEFault
- :SYSTem:SERial?
- :SYSTem:SIGNal:TYPE?
- :SYSTem:TEMPerature?
- :SYSTem:TEMPerature:STABle?
- :SYSTem:TIME?
- :SYSTem:UTCNow?

## Query Syntax

    :SYSTem:SIGNal:TYPE? <waveform>

Where the <waveform> can be selected from a channel, differential channel, function, waveform memory, or jitter memory:

- `CHAN{<connection1-8>}_{<ch1-8>}`. For example, `CHAN4_2`.
- `DIFF{<connection1-8>}_{<ch1,3,5,7>}`. For example, `DIFF4_3`.
- `CMODe{<connection1-8>}_{<ch1,3,5,7>}`. For example, `CMODe2_3`.
- `WMEMory{1:8}`. For example, `WMEMory2`.
- `JMEMory1`

## Description

This query returns the current signal type that is assigned or detected for the specified waveform. The command serves the same purpose as the `:CHANnel:SIGNal:TYPE` and `:DIFF:SIGNal:TYPE` queries. The following responses can be returned:

`NRZ`
  NRZ signal type.
`PAM3`
  PAM3 signal type.
`PAM4`
  PAM4 signal type.
`UNSPecified`
  Undetermined signal type.

The PAM options are available when the PAM-N analysis software license is installed.