MN25131A OM
PN: 10410-00783 Rev. A
1-1
Chapter 1 — Introduction
The MN25131A Multi-Function Extender provides USB hub and communication extension, multiple voltage
outputs, and battery power capabilities to enable remote use of USB instruments. USB to SFP (small
form-factor pluggable fiber-optic transceivers) allow two extenders to make a USB communications link over
distances in excess of 100
meters via fiber optic cables. An internal re-chargeable battery system enables
remotely powering measurement instruments in locations that are not necessarily close to AC line power. One
+5 V, four +12 V, and one +20 V supply connections are available. The inclusion of a six-port USB HUB allows
the extender to support multiple USB devices and interface accessories that may be part of a measurement
application. Such an application is the ME7868A 2-Port Modular Vector Network Analyzer System.
Figure 1-1.
MN25131A Multifunction Extender
Power Supply
R
EC
H
AR
GEAB
LE
B
A
TTER
Y
+5V
+12V
USB 3.0 HUB
Local
Extender
+20V
Local
Extender
Remote
Extender
FIBER
FIBER
FIBER
USB-B
USB-B
USB-A
2.5 Amp max
DC input:
+15V to +23V
6 Amps
USB-B
2.5 Amp max
4 Amp max total
Battery
Monitor
USB-A connectors