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Model 6664C
8 AND 16-CHANNEL LOW THERMAL QUAD SCANNERS
Complements All Guildline Bridges and Fully Automates Measurements
Guildline's 6664C Low Thermal Quad Scanner is the first
commercial scanner capable of operating at 1000V. This has
greatly improved the measurement/calibration throughput of
standards laboratories, since many high ohm measurements
can now be automated. High ohm measurements are typically
hard to make and very time consuming because of the low
signal/noise ratio. With a Guildline model 6664C scanner and
software, these hard-to-make high ohm measurements (up to
100 G) can be automated and scheduled at any time that is
convenient to the metrologists, even at night and over the
weekends.
This scanner is designed to work with a Guildline 6622A
Automatic Direct Current Comparator (DCC) Resistance Bridge,
a model 6622T Temperature Bridge or a Teraohmmeter (model
6520). Still have one of our older Guildline Automatic Bridges
such as a model 6675A? Our software and scanner also support
6664C FEATURES all previous Guildline' models.
Both 8-channel and 16-channel models are available. Like other
Withstands up to 1000 Vdc to provide fully Guildline products, the 8-channel scanner can be expanded to
automated resistance measurements a 16-channel model, giving our customers exactly what's
needed now and the flexibility for future growth.
Each Channel handles Up to 2 Amps
Thermoelectric Potentials: <20 nV The 6664C Low Thermal Quad Channel Scanner
Contact Life: >10,000,000 Cycles Enables Software Controlled, Fully Automated High
Ohm Measurements with Voltages Up to 1000 V!
Front Panel or Remote GPIB Control
4 Terminal Switching Matrix, 8 or 16 Gold fingers on the relay armature make direct contact to hard
Channel Inputs, 2 Channel Outputs gold pads on special circuit boards, and inputs are attached
directly to the relay boards thereby reducing the number of
8 Channel is upgradeable to 16 Channels connections. All relays are mounted in a heavy gauge
Gold Flashed Tellurium Copper Terminals machined aluminum enclosure to maintain thermal
equilibrium.
Front Panel Indication of Selected Channels
Leakages between the high and low circuits are reduced by
switching them on different printed circuit boards. The 6664C
offers convenient operation from either the front panel or from
the built in IEEE 488 bus.
To manually select 4-terminal devices connected to the input
channels, simply press the push button switch on the Line A-
output and another on the Line B-output. All other
connections remain isolated.
The 6664C performs switching for precision resistance
measurements with less than 20 nanovolt of thermal offsets.
Careful design in the use of latching relays, requiring only a
short pulse to actuate, eliminates self-heating errors.
Protection circuits prevent selection of more than one 4
terminal connection on a channel output at the same time.
Front panel indicators show which channel is selected on each
output.
6664C 8 and 16-Channel, Low Thermal Quad Scanners
SPECIFICATIONS
Thermoelectric Potentials: <20 nV typical and <50nV max.
Life: >10,000,000 cycles at low levels
Initial Contact Resistance: 0.05 max.
Relay Contact Ratings: Current: 2A max at 10 V
Voltage Switched: 100 V max. at 1 mA
Voltage Non-Switched: 1000 V max.
Leakage Resistance: >1015
Input: 16 or 8 channels of 4-terminal gold flashed tellurium copper binding posts;
Inputs/ Outputs:
Output: 2 channels of 4-terminal low thermal 5-way binding posts
Communication 24 pin IEEE 488 connector
Each scanner is shipped with an external 5V DC supply that can be powered by
Power Supply:
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