Agilent Technologies Agilent E5250A - Manual (Page 24)

1-8 Agilent E5250A User’s Guide, Edition 11
Introduction
Agilent E5255A Product Description
Agilent E5255A Product Description
The E5255A 24 (8 ×3) Channel Multiplexer is a 2-input to 24-output multiplexer
card for the E5250A. The E5255A consists of 3 blocks (three 2 ×8 multiplexers). So,
one E5255A can be configured as a 2 ×8 multiplexer, 2×16 multiplexer, or 2×24
multiplexer. "2-input" means one BIAS input and one IV input.
The E5255A is designed for semiconductor device reliability testing which needs to
automatically scan instrument input/output for many DUTs.
A maximum of four E5255As can be installed in the E5250A, which can use the
multiplexers in several configurations. For example, the E5250A can configure
twelve 8-output multiplexers, six 16-output multiplexers, four 24-output
multiplexers, three 32-output multiplexers, two 48-output multiplexers, or one
96-output multiplexer.
The E5255A block diagram is shown in Figure 1-5.
BIAS Input The BIAS INPUT ports are used to apply ac or dc bias to DUT.
BIAS INPUT ports are BNC connectors. Each BIAS INPUT
port is assigned to a 2
×8 multiplexer block as shown in Table
1-2. And you can make internal connections to connect a BIAS
INPUT port to multiple blocks. Refer to Chapter 2.
IV Input IV input is used for measuring/forcing dc current/voltage. You
can connect the IV input to desired SMU INPUT connector
(SMU1 to SMU6) of the E5250A by making an internal
connection. Refer to Chapter 2. The E5250A AUX INPUT
connectors are not used with the E5255A.
OUTPUT
Connectors
The E5255A has three 8-channel coaxial output connectors as
shown in Figure 1-6. Each output connector is assigned to a 2
×8
multiplexer as shown in Table 1-2.