Datasheet

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1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
Model 7706 Specifications
SWITCH/MEASURE SYSTEMS
29
Integra Series Multimeter/Switch Systems
Modules
Channel 22
NOTE Non-isolated
grounds ( )
are referenced to
chassis ground.
Channel 23
DAC
Channel 23
16
Channel 24
DAC
Channel 24
16
Tot a lizer
+IN
–IN
+GATE
–GATE
Channel 25
32
Cold junction
Ref x2
Channel 1
HI
LO
Channel 10
HI
LO
(Channels 2–9)
Channel 11
HI
LO
Channel 20
HI
LO
(Channels 12–19)
HI
LO
Sense
HI
LO
Input
Channel 26
2-Pole (Open)
4-Pole (Closed)
(see Note)
To Model 2700,
2701, or 2750
Backplane
Channel 28
(see Note)
Backplane
isolation
Channel 27
(see Note)
Backplane
isolation
NOTES Channels 26–28 in this schematic
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.
Sense
HI
LO
Input
HI
LO
Cold junction
Ref x2
Bit
16
Channel 21
Digital
Output
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
7706 ALL-IN-ONE I/O MODULE
FEATURES
• 20 channels of analog input (w/automatic CJC) for general-purpose measurement.
• 16 channels of digital output.
• Event counter/totalizer can monitor and control system components, such as
fixturing, limit switches, pass/fail indicators, external voltage sources, loads, door
closures, revolutions, etc., while performing mixed signal measurement.
• 300V, 1A capacity; 60W, 125VA maximum.
• Configurable as two independent banks of multiplexers.
•Two analog outputs (±12V, 5mA).
• Relay closures stored in on-board memory.
GENERAL
20 CHANNELS: 20 channels of 2-pole relay input.
All channels configurable to 4-pole.
RELAY TYPE: Latching electromechanical.
ACTUATION TIME: <3ms.
FIRMWARE: Specified for Model 2700 rev. A02 or B01, 2701 rev. A01, and 2750 rev.
A01 or higher.
CAPABILITIES
CHANNELS 1–20: Multiplex one of 20 2-pole or one of 10 4-pole signals into DMM.
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, 1A switched, 60W,
125VA maximum.
CONTACT LIFE (typ.): >10
5
operations at max. signal level: >10
8
operations cold
switching.
CONTACT RESISTANCE: <1Ω 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
9
Ω, <100pF.
ISOLATION BETWEEN ANY TERMINAL AND EARTH: > 10
9
Ω, <200pF.
CROSS TALK (10MHz, 50Ω Load): <–35dB.
INSERTION LOSS (50Ω Source, 50Ω Load): <0.1dB below 1MHz.
<3dB below 2Mhz.
COMMON MODE VOLTAGE: 300V between any terminal and chassis.
TEMPERATURE ACCURACY USING INTERNAL CJC: 1.0°C (see mainframe specifica-
tion for details).
TOTALIZE INPUT
MAXIMUM COUNT: 2
32
–1.
TOTALIZE INPUT: 100kHz (max), rising or falling edge, programmable.
SIGNAL LEVEL: 1Vp-p (min), 42Vpk (max).
THRESHOLD: 0V or TTL, jumper selectable.
DATE 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-isolated.
RESOLUTION: 1mV.
I
OUT
: 5mA max.
SETTLING TIME: 1ms to 0.01% of output.
ACCURACY ±(% of output + mV):
1 year ±5°C: 0.15% + 19mV;
90 day ±5°C: 0.1% + 19mV;
24 hour ±1°C: 0.04% + 19mV.
TEMPERATURE COEFFICIENT:
±(0.015% + 1mV)/°C.
DIGITAL OUTPUT
V
OUT
(L): <0.8V @ Iout = 400mA.
V
OUT
(H): >2.4V @ Iout = 1mA.
V
OUT
(H)MAX.: <42V with external open drain pull-up.
WRITE SPEED: 50/s.
ENVIRONMENTAL
OPERATING ENVIRONMENT: Specified for 0°C to 50°C.
Specified to 80% R.H. at 35°C.
STORAGE ENVIRONMENT: –25°C to 65°C.
WEIGHT: 0.5kg (1.1 lbs).