Hello, my name is Matt, and I’m a support engineer at Agilent Technologies. Today, I
would like to talk about the differences between the N6705A mainframe and the new N6705B mainframe.
You can see by looking at the front panels here that they’re very similar-looking,
but there are a few key differences, and we’d like to highlight those for you. The first
thing we’d like to talk about is the modules that each unit supports. The B mainframe
supports all the same modules as the A mainframe. In addition, the B mainframe will also be
able to support the N6753A 20-volt 50-amp 300-watt module. Both mainframes can support
the new N6780 SMU modules that are coming out. Specs for all these modules will be available
on Agilent’s website at Agilent.com in the product manuals. Now let’s take a closer
look at the front panel of the B mainframe. Here’s a closer look at the front panel
of the B mainframe. The first thing on the front panel we want to talk about is the
assembly behind the binding post here. We lowered the capacitance in order to handle
the faster transient and the higher programming & measure speeds of the new N6780 SMU modules.
And again, all the specifications for the modules will be in the manuals on the website
at Agilent.com. The other thing we changed was the graphic overlay that labels all of
our keys and knobs. If you look at some of the knobs they have a secondary function if
you press on them. We’re just going to highlight the trigger level one here, when you turn
the trigger level knob it will change the trigger level in scope and data logger modes.
But if you press on it, it will execute an auto-scale in data logger and scope modes,
and you can see the graphic represents that. It says “trigger level,” which is the
main function and then auto-scale as you press the knob. Next we’re going to take a
look at the differences on the rear panels of the units. Here are the rear panels of
the two instruments. The A is on the bottom and the B is on top. You can see that they’re
similar, just like the front panel, but the B has some more openings and a few more connections
than the A does. We’re going to take a closer look at the
rear panel of the B and highlight these differences for you. Here’s the rear panel of the
B mainframe. You can see that it has the external trigger input and output BNC connectors like
the A, the eight-pin digital port, the USB, LAN and GPIB connection ports. You can also
see that there’s these openings on the top and bottom and a new connector on the top
and bottom. The openings are so that you can run wire from the module out the rear
of the unit, and this is useful for rack mounting; if you have them in a rack you don’t want
wires going around to the front. It’s also imperative that you use these
openings for the N6753A module. The front panel binding posts are not rated to do 50
amperes, to do 50 amperes you have to use these rear openings. There are also these two
connectors here for the aux voltage measurement on the N6781A module. On the inside, you
plug the connector in, and then that will break those out to the rear panel so that
you can access them with the covers on. And all these connectors – the eight-pin connectors
you need are included with the mainframe in the box with it ships.
Now we’re going to take the top covers off both units and take a look at the connector
scheme for connecting modules up. Here’s the A mainframe with the top cover off.
This is the area that the modules sit in when you install them into the frame. One thing
we want to point out is the way you connect modules into the A mainframe is via this wiring
harness that’s actually split into two. You have one connector for the 10-amp modules
and a separate connector for the 12-amp and higher modules. And these connectors are actually
crimped on, you can’t take them off or put the new connector for the N6780 SMU modules
on it. In order to connect a N6780 module into this,
you need to use a connector adapter that we provide with each unit. And there’ll be
a separate video showing you how to install one of those modules in this mainframe.
Now let’s take a similar look at the same area on the B mainframe. So here’s the top
of the B mainframe where you connect the module. You can see it’s pretty different than the
A, the first thing we’re going to point out is this RFI strip that connects
the modules to the chassis a bit better. The other thing that changed quite drastically
is the way we connect up the modules. Now instead of having the crimped on connectors
and the split wire with the two connectors on it, we have one wire that you put the connector
on yourself. You need to take the connector that came with the module when you purchased
it and install it onto the wires here. And the wires are all color-coded, and the key
to the color coding is located on the label right there. You just match that up to
the label on the rear of the module and it should be no trouble at all putting the connector
on. You see here’s one with the connector on… channel one.
The other thing we have are these connectors that connect to the auxiliary measurement
on the N6781A module that take that port out to the back rear panel of the unit that we
showed earlier. So we’ve highlighted some differences between the A mainframe and the
B mainframe – differences on the front panel, in the top where the modules connect and on
the rear panel. If you have any questions about either of these products or any Agilent
products, please contact us at Agilent’s website at Agilent.com. Thanks for watching.
This is Matt. Bye.