Agilent Technologies Switch E1470A Manual do Utilizador descarregar pdf (Página 32)

32 RF Switch Command Reference

Chapter 3

DIAGnostic:RELAY?

DIAGnostic:RELAY? returns the relay numbers of all relays that are

closed.Closedis the SETposition(COMMONto NO)and istheopposite

state of the power-on/reset relay state. The command can be used to

determine which relays are closed by a given PATH command.

Comments Output Buffer Strings. The output buffer contains an unquoted,

comma-separated string of numbers where each number is a relay

number. If no relay is closed, the output buffer will contain the null string.

This is a register readback command that returns the current state of the

registers controlling the relays. It does not account for failed relays.

*RST condition. At power-on or reset (*RST), DIAG:REL? will not return

any channel numbers.

Example Returning Closed Relay Numbers

!Reset the module

!Completes a path from COM25

!to channel 42.This is equivalent

!to PATH 25,42

!Query the relays

This program returns:

042,043,053,054,256

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 57 58

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Agilent Technologies Switch E1470A Manual do Utilizador Página 32