7707 KEITHLEY, 7707 Datasheet - Page 6

• 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

7706-3Y-EW
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Ordering Information
7706
Cold junction
Ref x2
Cold junction
Ref x2
Channel 1
(Channels 2—9)
Channel 10
Channel 11
(Channels 12—19)
Channel 20
1.888.KEITHLEY
7706
20 channels of analog input
(w/automatic CjC) for general-
purpose measurements
16 channels of digital output
2 analog outputs (±12V, 5ma)
300V, 1a capacity; 60W, 125Va
maximum
Configurable as two
independent banks of
multiplexers
relay closures stored in
onboard memory
16
w w w.keithley.com
Sense HI
Input
Output
Digital
SErVICES aVaILaBLE
LO
LO
LO
LO
LO
LO
HI
HI
HI
HI
HI
1-year factory warranty extended to 3 years
from date of shipment
all-in-One I/O Module
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
4-Pole (Closed)
Channel 21
2-Pole (Open)
Channel 22
Channel 26
(see Note)
NOTE: Non-isolated
grounds (
are referenced to
chassis ground.
(U.S. only)
)
NOTES: Channels 26—28 in this schematic
16
16
32
refer to the designations used for
control and not actual available channels.
Channels 26, 27, and 28 can be individually
controlled using ROUTe:MULTiple if the
module is not to be connected to the
internal DMM.
For more information, refer to the
ROUTe:MULTiple command section
in the Model 2700, 2701, or 2750 User s Manual.
Channel 27
Backplane
(see Note)
Channel 28
isolation
Backplane
(see Note)
isolation
Channel 23
Channel 24
Totalizer
All-in-One I/O Module
20-channel Differential Multiplexer w/Automatic CJC, 16 Digital
Outputs, 2 Analog Outputs, a Counter/Totalizer, and Screw Terminals
The Model 7706 plug-in module offers 20 chan-
nels of 2-pole or 10 channels of 4-pole multiplex-
er switching with automatic CJC, as well as two
analog output channels, 16 digital outputs, and
one event counter/totalizer. The event counter/
totalizer can be used to monitor and control
system components, such as fixtures, limit
switches, pass/fail indicators, external voltage
sources, loads, door closures, revolutions, etc.,
while performing mixed signal measurements.
The Model 7706 is ideal for RTD, thermistor, and
thermocouple temperature applications.
DAC
DAC
Input
Sense
LO
LO
HI
HI
Channel 23
Channel 24
+IN
+GATE
—IN
—GATE
To Model 2700,
2701, or 2750
Backplane
Channel 25
A
G R E A T E R
TOTaLIZE INPUT
MAXIMUM COUNT: 2
TOTALIzE INPUT: 100kHz (max), rising
SIgNAL LEVEL: 1Vp-p (min), 42Vpk
THRESHOLD: 0V or TTL, jumper select-
gATE INPUT: TTL-Hi, TTL-Lo, or none.
COUNT RESET: Manual or Read+Reset.
READ SPEED: 50/s.
aNaLOg VOLTagE OUTPUT
DAC 1, 2: ±12V in 1mV increments, non-
RESOLUTION: 1mV.
I
SETTLINg TIME: 1ms to 0.01% of output.
ACCURACY ±(% of output + mV):
TEMPERATURE COEFFICIENT:
OUT
or falling edge, programmable.
(max).
1 year ±5°C:
90 day ±5°C:
24 hour ±1°C: 0.04% + 19mV.
able.
isolated.
±(0.015% + 1mV)/°C.
: 5mA max.
M E A S U R E
0.15% + 19mV;
0.1% + 19mV;
32
–1.
CaPaBILITIES
CHANNELS 1–20: Multiplex one of 20 2-pole or one of 10
Channels 21–25 are referenced to chassis ground.
CHANNELS 21–22: 16 Digital Outputs.
CHANNELS 23–24: Analog Voltage Output (2).
CHANNELS 25: Totalize Input.
INPUTS
MAXIMUM SIgNAL LEVEL (Channels 1–20): 300V DC or rms,
CONTACT LIFE (typ.): >10
CONTACT RESISTANCE: <1W at end of contact life.
CONTACT POTENTIAL: <±2µV typical per contact, 3µV max.
OFFSET CURRENT: <100pA.
CONNECTOR TYPE: Screw terminal, #20 AWG wire size.
ISOLATION BETwEEN ANY TwO TERMINALS: >10
ISOLATION BETwEEN ANY TERMINAL AND EARTH: >10
CROSS TALk (10MHz, 50W Load): <–35dB.
INSERTION LOSS (50W Source, 50W Load): <0.1dB below
COMMON MODE VOLTAgE: 300V between any terminal and
TEMPERATURE ACCURACY USINg INTERNAL CJC:
1
4-pole signals into DMM.
1A switched, 60W, 125VA maximum.
>10
<100pF.
<200pF.
1MHz. <3dB below 2MHz.
chassis.
1.0°C (see mainframe specification for details).
Minimum signal level 10mV, 10µA.
O F
8
operations no load
C O N F I D E N C E
DIgITaL OUTPUT
V
V
V
wRITE SPEED: 50/s.
gENEraL
20 CHANNELS: 20 channels of 2-pole
RELAY TYPE: Latching electromechanical.
ACTUATION TIME: <3ms.
FIRMwARE: Specified for Model 2700
ENVIrONMENTaL
OPERATINg ENVIRONMENT:
STORAgE ENVIRONMENT: –25° to 65°C.
wEIgHT: 0.5kg (1.1 lbs).
OUT
OUT
OUT
drain pull-up.
relay input. All channels configurable
to 4-pole.
rev. A02 or B01, 2701 rev. A01, and 2750
rev. A01 or higher.
Specified for 0° to 50°C. Specified to
80% R.H. at 35°C.
1
(L): <0.8V @ I
(H): >2.4V @ I
(H)MAX.: <42V with external open
5
.
operations at max. signal level;
out
out
= 400mA.
= 1mA.
9
W,
9
W,