Agilent Technologies L4400 manual Remote Module Identifiers, Drive Modes

Microwave Switch/Attenuator Driver 7

Remote Module Identifiers

A special channel numbering method exists for use with SCPI commands that operate one or more banks of the remote module. This addressing uses a non- existent channel number (00) to indicate the commands are useful for all channel in a bank or all channels on a remote module. The format of this special channel list is specified as:

1<rem><00>

where:

rem is the remote module being controlled, and is a single digit in the range of 1 to 8.

channel is non- existent channel number 00 on the remote module.

You may not use this special channel list in a range of channels.

The following commands use this form of channel addressing. Refer to the Programmer’s Reference Help file for more details.

ROUTe:RMODule:BANK:DRIVe:MODE

ROUTe:RMODule:BANK:LED:DRIVe:ENABle

ROUTe:RMODule:BANK:LED:DRIVe:LEVel

ROUTe:RMODule:BANK:PREset

ROUTe:RMODule:DRIVe:LIMit

ROUTe:RMODule:DRIVe:SOURce:BOOT

ROUTe:RMODule:DRIVe:SOURce:IMMediate

Drive Modes

Each remote module can drive the switches and attenuators using either TTL or open collector drive methods. The TTL drive mode uses a pull- down resistor on the output and drives a TTL high level when asserted. The open collector drive provides a current path to ground when asserted.

	H
TTL Drive	L

Drive Active

H

Open Collector

Drive

L

The drive mode is set on a per bank basis using the

ROUTe:RMODule:BANK:DRIVe:MODE command.

L4400 User’s Guide 145