Keysight 34934A - Page 114

2 Base Matrix Configuration
114 Keysight 34934A User’s Guide
Alternately, you may choose to connect only columns (typically test points on
your DUT) to the D-Subs. There may be physical or electrical advantages in
making your row connections (typically measurement devices) to the
configuration block’s blue extension connectors J3, J4, J5 and J6. To provide this
flexibility, two extension headers are provided on each side of the configuration
block.
You must have set the jumpers (in “Placing Row Extension Jumpers on the
34934C-001 Configuration Block” on page 110) to extend rows to two of the four
headers. We’ll call these the “live” headers.
Had you created two live headers, by performing step 3 on page 109; then the
second header (J3 or J6) on the side selected by jumpers J7 will also be a live
header.
In “Placing Safety Interlock Continuity Jumpers on the 34934C-001 Configuration
Block” on page 112, you will have installed the supplied blue terminators in the
live headers on the configuration block.
You can now make row connections to these headers, by utilizing the central 16
pins (3-18) on the snap-in terminators. The extension header’s supplied
terminator is shown below. Pay careful attention to the polarizing notches for
identification of pin 1:
182
10
4
6
8
12
14
16
20
1
3
5
7
9
11
13
15
19
17
18
12
14
16
20
2
1
4
3
6
5
8
7
10
9
11
13
15
19
17
Extension Headers J3, J4, J5 and J6
Polarizing Notches
circuit board
Supplied Jumper
from Pin 1-2;
Polarizing Notches
Supplied Extension Terminators
Safety Interlock
Terminator for
Pins 19 & 20