Datasheet

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1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
Model 7710 Specifications
SWITCH/MEASURE SYSTEMS
33
Integra Series Multimeter/Switch Systems
Modules
CARD SOURCE
CHANNEL 1
CHANNEL 10
CHANNEL 11
CHANNEL 20
CARD SENSE
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
CHANNEL 21
CHANNEL 22
To Mainframe
Backplane
CHANNEL 23
2-Pole (closed)
4-Pole (opened)
Cold Junction
Ref 3x
Cold Junction
Ref 3x
7710 20-CHANNEL SOLID STATE/LONG-LIFE
DIFFERENTIAL MULTIPLEXER W/AUTOMATIC CJC
FEATURES
• Solid-state relays for long life and low maintenance (100 times longer life than
mechanical relays)
• Higher scanning speeds of up to 500 channels per second
•Automatic CJC with no extra accessories required for thermocouple measurements
• Removable screw terminals offer simple, quick connections
•20 channels for general purpose measurements
• Configurable as two independent banks of multiplexers
GENERAL
CHANNELS: 20 channels of 2-pole relay input. All channels configurable to 4-pole.
RELAY TYPE: Solid State Opto-Coupled FET.
ACTUATION TIME: <0.5ms (100mA load).
FIRMWARE: Specified for Model 2700 Rev. B05, Model 2750 Rev. A04, and Model 2701
Rev. A01.
CAPABILITIES
CHANNELS 1–20: Multiplex one of 20 2-pole or one of 10 4-pole signals into DMM.
INPUTS
MAXIMUM SIGNAL LEVEL: Any channel to any channel (1–20): 60VDC or 42V rms,
100mA switched, 6W, 4.2VA maximum.
COMMON MODE VOLTAGE: 300VDC or 300Vrms (425V peak) maximum between
any terminal and chassis.
RELAY LIFE (TYP): >10
5
operational hours max. signal level or 10
10
operations
(guaranteed by design).
RELAY DRIVE CURRENT: 6mA per channel continuous, 25mA during initial pulse.
CHANNEL RESISTANCE (per conductor): <5Ω.
CONTACT POTENTIAL: <1µV per pair.
OFFSET CURRENT: <3nA @ 23°C (per channel); additional 0.13nA/°C >23°C.
CONNECTOR TYPE: 3.5mm removable screw terminals, #20 AWG wire size.
ISOLATION BETWEEN ANY TWO TERMINALS: >10
9
Ω, <100pF.
ISOLATION BETWEEN ANY TERMINAL AND EARTH: >10
9
Ω, <100pF.
CROSSTALK (CH-CH, 300kHz, 50Ω Load) : <–40dB.
INSERTION LOSS (50Ω Source, 50Ω Load): <0.5dB below 100kHz, <3dB below
2MHz.
TEMPERATURE ACCURACY USING INTERNAL CJC: 1°C (Type K) (see mainframe
specifications for details).
SCANNING SPEEDS (see mainframe specifications for details)
Multiple Channels, Into Memory Channels/s
2700 2701 2750
7710 Scanning DCV 180/s 500/s 230/s
7710 Scanning DCV with Limits or Time Stamp On 170/s 500/s 230/s
7710 Scanning DCV alternating 2WΩ 45/s 130/s 60/s
Multiple Channels, Into and Out of Memory to GPIB
or Ethernet
Channels/s
2700 2701 2750
7710 Scanning DCV 145/s 440/s 210/s
7710 Scanning DCV with Limits or Time Stamp On 145/s 440/s 210/s
7710 Scanning DCV alternating 2WΩ 40/s 130/s 55/s
ENVIRONMENTAL
OPERATING ENVIRONMENT: Specified for 0°C to 50°C. Specified for 80% R.H.
at 35°C.
STORAGE ENVIRONMENT: –25° to 65°C.
WEIGHT: 0.45kg (1 lb).
ACCESSORIES AVAILABLE: Model 7401 Type K Thermocouple Wire, 30.5m (100 ft).