Agilent Technologies L4400 manual Channel Numbering, 1remchannel

Microwave Switch/Attenuator Driver 7

Channel Numbering

The L4445A uses the following channel numbering scheme:

1<rem><channel>

where:

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

channel is the channel number on the remote module.

The channel number is two digits spanning channels across each remote module. Channel numbers are shown below (also see the figure on page 140).

Bank	Channels	Channels
Bank 1	1 to 8	11 to 18
Bank 2	21 to 28	31 to 38
Bank 3	41 to 48	51 to 58
Bank 4	61 to 68	71 to 78

The channel numbers are arranged to facilitate the pairing of channels for dual coil switches and attenuators. Dual coil devices require the use of two channels, one for each coil. By pairing the upper and lower channels in each bank, the devices can be controlled using only the lower channel number. For example, when a paired- coil device is installed on bank 2, channels 21 and 31 are paired and are controlled using only channel 21.

The following SCPI command closes channel 5 on the master remote module connected to the L4445A.

ROUT:CLOS (@1105)

You can also use a range of channel numbers. You could close all the channels on the master remote module connected to a L4445A by sending the following command.

ROUT:CLOS (@1101:1178)

Note that when single- coil devices are used, the channel numbering is not consecutive across all 16 channels in a bank.

L4400 User’s Guide 143