7707 KEITHLEY, 7707 Datasheet - Page 4

• Manufacturer Part Number: 7707
• Description: KEITHLY MULTIPLEXER DIGITAL I/O MODULE
• Manufacturer: KEITHLEY

Specifications of 7707

• Accessory Type: Differential Multiplexer Module
• Features: 10-Channel W/ 32-Channel Digital I/O
• Rohs Compliant: NA
• For Use With: Keithley Models 2700, 2701, And 2750 DMM Data Acquisition Datalogging Systems

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Ordering Information
7703
accessories Supplied
Two mating connectors with
solder cup (Model 7788)
1.888.KEITHLEY
7703
32 channels for general purpose
measurements
relay actuation time of less
than 1ms for high-speed
scanning
Two- or four-wire measurement
Two 50-pin female D-sub
connectors are standard for
secure hook-up and quick
teardown
w w w.keithley.com
Card Input
Card Sense
Channel 1
(Channels 2–15)
Channel 16
Channel 17
(Channels 18–31)
Channel 32
32-channel, High
Speed, Differential
Multiplexer Module
LO
LO
LO
HI
HI
LO
HI
HI
LO
LO
HI
HI
2-Pole (Closed)
4-Pole (Open)
Channel 35
(see Note)
(U.S. only)
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, 2701, or 2750 User’s Manual.
32-channel, High Speed,
Differential Multiplexer Module
The Model 7703 plug-in module offers 32
channels of 2-pole or 16 channels of 4-pole
multiplexer switching that can be configured
as two independent banks of multiplexers. The
non-latching reed relays provide high speeds
and are designed for 300 volt, 500mA; 10VA. The
relay closures are stored in onboard memory.
The Model 7703 is ideal for RTD and thermistor
temperature applications.
Channel 34
Channel 33
(see Note)
(see Note)
Backplane
isolation
Backplane
isolation
Input
Sense
LO
LO
HI
HI
A
G R E A T E R
To Model 2700,
2701, or 2750
Backplane
M E A S U R E
CaPaBILITIES
CHANNELS 1–32: Multiplex one of 32 2-pole or one of 16
INPUTS
MAXIMUM SIgNAL LEVEL:
CONTACT RESISTANCE: <1W at end of contact life.
CONTACT POTENTIAL:
OFFSET CURRENT: <100pA.
CONNECTOR TYPE: 50 pin D-sub ×2.
RELAY DRIVE CURRENT: 20mA per channel.
ISOLATION BETwEEN ANY TwO TERMINALS: >10
ISOLATION BETwEEN ANY TERMINAL AND EARTH: >10
CROSS TALk (1 MHz, 50W Load): <–40dB.
INSERTION LOSS (50W Source, 50W Load): <0.35dB below
COMMON MODE VOLTAgE: 300V between any terminal and
gENEraL
32 CHANNELS: 32 channels of 2-pole relay input.
RELAY TYPE: Reed.
ACTUATION TIME: <1ms.
FIRMwARE: Specified for Model 2700 rev. A01, 2701 rev. A01,
ENVIrONMENTaL
OPERATINg ENVIRONMENT: Specified for 0°C to 50°C.
STORAgE ENVIRONMENT: –25°C to 65°C.
wEIgHT: 0.8kg (1.75 lbs).
7705-MTC-2
7703-3Y-EW
4-pole signals into DMM.
Channels (1–32): 300V DC or rms, 0.5A switched, 10W
Contact Life (typ): >5×10
<±3µV typical per contact, 6µV max.
<±3µV typical per contact pair, 6µV max.
<200pF.
<400pF.
1MHz. <3dB below 2MHz.
chassis.
and 2750 rev. A01 or higher.
O F
maximum.
aCCESSOrIES aVaILaBLE
C O N F I D E N C E
SErVICES aVaILaBLE
All channels configurable to 4-pole.
50 Pin Male to Female DSUB Cable, 2m (6.6 ft).
1-year factory warranty extended to 3 years
from date of shipment
>10
8
operations cold switching.
4
operations at max. signal level.
Specified to 80% R.H. at 35°C.
9
W,
9
W,
247