Table of Contents
Advertisement
7701 150V 32-Channel Differential Multiplexer
GENERAL
32 CHANNELS: 32 channels of 2-pole relay input. All channels configur-
able to 4-pole.
RELAY TYPE: Latching electromechanical.
ACTUATION TIME: <3ms.
FIRMWARE: Specified for Model 2700 rev. B03 and Model 2750 rev. A01.
DMM CONNECTIONS: Screw terminals provide internal DMM connec-
tions to channels 34 and 35 and connections to external wiring access.
CAPABILITIES
CHANNELS 1–32: Multiplex one of 32 2-pole or one of 16 4-pole signals
into DMM. Configuration supports dual 1×16 independent multi-
plexers.
INPUTS
MAXIMUM SIGNAL LEVEL: Any channel to Any Channel (1–32): 150V
DC or 150Vrms (212V peak) for AC waveforms, 1A switched, 60W,
125VA maximum.
SAFETY: Conforms to European Union Directive 73/23/EEC EN61010-1,
CAT I.
CONTACT LIFE (typ): >10
5
operations at max signal level.
>10
8
operations cold switching.
CONTACT RESISTANCE: <1Ω any path and additional 1Ω at end of con-
tact life.
CONTACT POTENTIAL: <6µV per contact pair.
OFFSET CURRENT: <100pA.
CONNECTOR TYPE: 50-pin female D-shell, Channels 1–24.
25-pin female D-shell, Channels 25–32.
Supplied with male IDC ribbon cable connectors.
ISOLATION BETWEEN ANY TWO TERMINALS: >10
ISOLATION BETWEEN ANY TERMINAL AND EARTH: >10
CROSS TALK (1MHz, 50Ω Load): <–35dB.
INSERTION LOSS (50Ω Source, 50Ω Load): <0.35dB below 1MHz.
COMMON MODE VOLTAGE: 300VDC or 300Vrms (425V peak) for AC
waveforms between any terminal and chassis.
ENVIRONMENTAL:
OPERATING ENVIRONMENT: Specified for 0°C to 50°C.
Specified to 50% R.H. at 35°C.
STORAGE ENVIRONMENT: –25°C to 65°C.
WEIGHT: <0.52kg (1.16 lb).
ACCESSORIES AVAILABLE:
Model 7789 50/25 Pin Male D-Shell Solder Cup Connectors
Model 7790 50/50/25 Pin Female/Male D-Shell IDC Connectors
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
External
Wiring Access
Multiplexer 1
Channel 1
(Channels 2–15)
Channel 16
Channel 17
(Channels 18–31)
Channel 32
Multiplexer 2
Ω, <200pF.
9
Ω, <400pF.
9
<3dB below 2MHz.
HI
LO
HI
LO
Channel 35
(see Note)
HI
LO
Channel 33
2-Pole (Open)
4-Pole (Closed)
(see Note)
Channel 34
(see Note)
HI
LO
HI
The Model 7701 is rated for low-voltage applications.
When connecting the 7701 to the internal DMM via
LO
the screw terminals, all other modules in the
mainframe must be derated to 150VDC or 150Vrms
(212V peak) for AC waveforms.
HI
LO
NOTE Channels 33–35 in this schematic refer to the designations
used for control and not actual available channels.
For more information, refer to the ROUTE:MULT command
section in the Model 2700 or 2750 User's Manual.
User
Configurable
Screw
Terminals
Screw
Terminals
HI
HI
Backplane
DMM Input
Isolation
LO
LO
To
Internal
DMM
Screw
Terminals
HI
HI
Backplane
DMM Sense
Isolation
LO
LO
4/30/01
Rev. B
Advertisement
Table of Contents
