Series 3700A Switch and Control Cards Reference Manual
Section 11: Model 3732 quad 4x28 reed relay matrix card
3700AS-909-01 Rev. A / Preliminary
11-35
Model 3732 2-pole operation
There are three additional Model 3732 2-pole configurations available using Model 3706A software
with the Model 3732 card:
•
Dual 4x28 2-pole configuration
(on page 11-36)
•
Single 4x56 2-pole configuration
(on page 11-40)
•
Single 8x28 2-pole configuration
(on page 11-44)
The Model 3732 uses single-pole relays and operates in single-pole mode by default. However, three
Model 3732 configurations can operate in 2-pole mode (using Model 3706A software).
In 2-pole operation, one relay bank is used for the high signals, and the adjacent relay bank is used
for the low signals. When the Model 3732 is configured for 2-pole operation, closing a channel on the
first (high) bank causes the automatic closure of the corresponding channel on the second (low) bank
(channel pairing).
NOTE
When viewing the crosspoint matrix for your 2-pole configuration in the Series 3700A web interface
on your computer, the low crosspoint in a channel pair will appear unavailable (gray). If you attempt to
click on the low crosspoint, you will receive an error message stating the channel is not active.
To set up the Model 3732 card for 2-pole operation, you first configure the card’s hardware for the
appropriate 1-pole operation, and then enable 2-pole operation using the Model 3706A software.
shows the necessary base hardware configuration (1-pole) to accomplish each 2-pole configuration
using the Model 3706A software.
Base 1-pole hardware settings for 2-pole configurations
Model 3732 1-pole configuration
Model 3732 2-pole configuration
using Model 3706A software
Quad 4x28
Dual 4x28 (2-pole)
Dual 8x28
Single 8x28 (2-pole)
Dual 4x56
Single 4x56 (2-pole)
Configure the Model 3732 hardware for the appropriate 1-pole operation by setting the ID jumpers on
the screw terminal assembly or direct wiring the ID bit connections (if you are not using a screw
terminal assembly).
Once the hardware is configured, use the Model 3706A’s software to select 2-pole operation (using
the
channel.setpole
command). Refer to the "Close/Open Overview" section of the Model 3706A
Reference Manual for detailed information about configuring channels for 2-pole operation.
NOTE
Two-pole operation can be specified on some channels and not others, but it is more common to
operate the entire card in 2-pole mode. The schematics, connection diagrams, and connection logs in
the following sections assume the entire card is set to 2-pole operation.
Two-pole configurations
The three available 2-pole configurations are described in the following sections.