HP 53A, E1351A port, SCAN:PORT, SCAN:PORT, *RST Condition:, Example Query Scan Port, Order of Command Execution:, Example Selecting the ABUS Port

SCAN:PORT [ROUTe:]SCAN:PORT <port> enables/disables the tree isolation switches. SCAN:PORT ABUS closes the appropriate tree switches (for analog bus connections). The [ROUTe:]SCAN:PORT NONE command disables the tree switches and leaves them open. With SCAN:PORT NONE the closed channels can only be measured through the respective bank direct terminals.

Parameters

Parameter Name	Parameter Type	Range of Values
port	Discrete	ABUS NONE

Comments ∙ Order of Command Execution: The [ROUTe:]SCAN:PORT command must be executed before the [ROUTe:]SCAN <channel_list> and [ROUTe:]CLOSe <channel_list> commands.

∙*RST Condition: [ROUTe:]SCAN:PORT NONE

Example Selecting the ABUS Port

TRIG:SOUR EXT	Selects external trigger source.
SCAN:MODE FRES	Selects the 4-wire ohms scanning
	mode.
SCAN:PORT ABUS	Selects the analog bus port.
SCAN (@100:107)	Sets channel list.
INIT	Starts scanning cycle.

SCAN:PORT? [ROUTe:]SCAN:PORT? returns the current state of the analog bus port. The command returns NONE if the analog bus connection control relays are disabled or ABUS if the control relays are enabled.

Example Query Scan Port

This example selects the analog bus port, then queries the state. Because the analog bus port is selected, the query command returns ABUS.

SCAN:PORT ABUS	Selects the analog bus port.
SCAN:PORT?	Query the port selection.

68 HP E1351A/53A 16-Channel FET Multiplexer Command Reference Chapter 5