Multimeter Model: 7708

Multimeter

 

 

萬用錶

Model : 7708

 

 

* FEATURES

 

• 40 differential channels for general-purpose measurements.

 

• 2- or 4-wire measurements.

 

• Oversize screw terminal connection blocks are standard for easier connection.

 

• 300V,1Acapacity for voltage channels; 60W, 125VA.

 

• Configurable as two independent banks of multiplexers.

 

• Built-in CJC sensors automatically linearize thermocouples.

 

• Relay closures stored in on-board memory.

 

 

 

* GENERAL

 

40 CHANNELS: 40 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. B02, 2701 rev. A01, and 2750 rev. A01

 

or higher.

 

 

 

* CAPABILITIES

 

CHANNELS 1–40: Multiplex one of 40 2-pole or one of 20 4-pole signals into DMM.

 

 

 

* INPUTS

 

MAXIMUM SIGNAL LEVEL:

 

Channels (1–40): 300V DC or rms, 1A switched, 60W, 125VA maximum.

 

CONTACT LIFE (typ): >105 operations at max. signal level.

 

>108 operations cold switching.

 

CONTACT RESISTANCE: <1Ω at end of contact life.

 

CONTACT POTENTIAL: <±500nV typical per contact, 1μV max.

 

<±500nV typical per contact pair, 1μV max.

 

OFFSET CURRENT: <100pA.

 

CONNECTOR TYPE: Screw terminal, #20 AWG wire size.

 

ISOLATION BETWEEN ANY TWO TERMINALS: >1010Ω, <100pF.

 

ISOLATION BETWEEN ANY TERMINAL AND EARTH: >109Ω, <200pF.

 

CROSS TALK (10MHz, 50Ω Load): <–40dB.

 

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 specification

 

for details).

 

 

 

* 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: 0.52kg (1.16 lb).

 

ACCESSORIES AVAILABLE:

 

Model 7401 Type K Thermocouple Wire, 30.5m (100 ft).