Keithley 610C, Instruction Manual

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SECTION 4. ACCESSORIES
12
4-1. GENERAL. The following Keithley accessories
can be used with the Model 610C to provide additional
convenience and versatility.
4-2. OPERATING INSTRUCTIONS. A separate instruction
manual is supplied with each accessory giving com-
plete operating information.
Model 2503 Static Detector Probe
The Model 2503 is a specially designed detector used
to measure static charge on plane surfaces. The probe
must be used with an electrometer such as the 610C.
The Model 2503 is useful for measurements of charge
on flat surfaces. The Model 2503 is a solid coax
½
inch (13mm) diameter tube with a 3
½
inch (89mm)
head, a 3
½
inch (89mm) coupler, a 1 inch (25mm)
adapter, and two 90° angle adapters with a diameter
of at least
½
inch or 13mm. Recommended spacing is
¼
of an inch from the surface for 10,000:1 divider
ratio. The 2503 is calibrated such that a one volt
deflection on the electrometer corresponds to 10kV of
static charge.
Model 6101A Shielded Probe
The Model 6101A is a shielded cable with a needle-
point probe and 30 inches of low noise cable
terminated by a UHF connector.
Model 6103C Divider Probe
The Model 6103C is a shielded cable with a needle-
point probe and 30 inches of low noise cable
terminated by a UHF connector. The probe includes a
1000:1 voltage divider with a 3.8
×
10 11
Ω
input
resistance. Accuracy is ±5% of reading.
Model 6105 Resistivity Chamber
The Model 6105 is a guarded test fixture for
measurement of surface and volume resistivity. The
chamber is designed in accordance with ASTM Standard
Method of Test for Electrical Resistance of
Insulating Materials, D257-66. The 6105 can be used
in conjunction with an electrometer and voltage
supply.
Resistivity can be determined by measuring the
current through a sample with a known voltage
impressed. The measurement can be made most
conveniently when a set of electrodes are used that
can be calibrated in terms of surface or volume
resistivity. The Keithley Model 6105 resistivity
adapter has been designed for use with a Keithley
electrometer and an optional high voltage supply.
Mating cables are supplied as follows:
• Model 32418 UHF to MHV cable
• Model 4801 BNC to BNC cable
• Model 6147 BNC to Triax adapter
• Model CS-115 UHF to BNC adapter
Model 8002A High Resistance Test Fixture
The Model 8002A high resistance test fixture has one
pair of 5-way binding posts (input) and a 3-lug
female triax receptacle (output).
The Model 8002A minimizes leakage current that can
become a significant portion of high resistance mea-
surement.
Accessories:
• Model 7172 2-lug to 3-lug triaxial adapter
• Model 7078-TRX-3 three feet triaxial cable
• Model 8007-GND-3 safety ground wire
• Model CS-662 mating plug
• Model CA-18-1 dual banana cable
Model 19072 Input Cable
The Model 19072 is three feet (0.9m) of coaxial cable
(SC-9). The cable is terminated with a UHF connector
on one end and alligator clips on the other.