CT6 Tektronix, CT6 Datasheet - Page 2

• Manufacturer Part Number: CT6
• Description: Test Probes CT6 Probe Hi-Freq.
• Manufacturer: Tektronix

Specifications of CT6

• Color: Black
• Equipment Type: Test Probe Set
• Accuracy: 0.03
• Application: Data storage read channel design, ESD testing, propagation delay measurement
• Bandwidth: 250 kHz to 2 GHz (Typ.)
• Current, Rating: 120 mA (RMS)
• Impedence, Insertion: 11.9 Ohms @ 1 GHz
• Inductance, Leakage: 1.5 nH
• Propagation Delay: 5.2 ns
• Sensitivity: 5 mV⁄mA
• Standards: CE Marked
• Time, Rise: 200 Sec.
• Voltage, Rating: 30 VDC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2
AC Current Probes
CT1/CT2 Current Probes
The CT1 and CT2 Current Probes are
designed for permanent or semi-perma-
nent in-circuit installation. Each probe
consists of a current transformer and an
interconnecting cable. The current trans-
formers have a small hole through which
a current carrying conductor is passed
during circuit assembly.
The P6041 Probe Cable provides the
connection between the CT1 and CT2
Current Transformers and a BNC oscillo-
scope input. A 50 Ω termination is
required to terminate the cable when
connected to a high impedance (1 MΩ)
oscilloscope input. One probe cable can
be used to monitor several current trans-
formers that have been wired into a
circuit.
Miniature Construction
The CT1 and CT2 detachable cable
design enables one or more probes to be
located on circuit boards or in other
limited space areas.
The CT6 offers the smallest form factor
available, for measurement on ever-
shrinking circuit boards and components.
It is designed for temporary installation
and does not incorporate removable
cables, as the CT1 and CT2 do.
Extendible Probe Length
Specified rise time and bandwidth are
obtained when using the probe cables
CT1 • CT2 • CT6
CT1/CT2. Current Probes with P6041 BNC
Probe Cable.
Current Probes • www.tektronix.com/accessories
provided: The P6041 cable use with the
CT1 and CT2 is 42 inches nominal. If
additional length is required, the cables
can be extended by using high quality
50 Ω cable and suitable interface connec-
tors. (Also see Special Probe Cables,
Optional Accessories.) Long cables may
degrade high frequency response.
High Sensitivity
The CT1 and CT6 provide an output of
5 mV for each milliamp of input current
when terminated in 50 Ω. The CT2
provides 1 mV per milliamp when termi-
nated in 50 Ω.
Typical Systems
The CT1, CT2 and CT6 high frequency
current transformers are dynamic (i.e.,
non-DC) current measuring devices. They
are typically used in conjunction with
compatible high bandwidth oscilloscopes
and other instruments to observe and/or
record high frequency current waveforms.
The CT1, CT2 and CT6 normally operate
directly into 50 Ω scopes and other
measuring device inputs.
The CT1 or CT2 can be used with 1 MΩ
input systems; use the P6041 probe
cable and terminate the output with a
50 Ω feed-through termination (see
Optional Accessories).
In all cases, the CT1, CT2 and CT6 must
work into 50 Ωs to obtain specified
performance and sensitivity.
Typical Measurement Applications
Differential Current Measurements
Most true-differential voltage amplifiers
have a maximum bandwidth of about
100 MHz. The CT1 or CT6 can make
differential current measurements to
1 GHz and 2 GHz, respectively, by
passing two wires carrying opposing
currents through the same core. The
displayed result is the difference current.
The CT2 can perform the same function
to 200 MHz.
In all cases, Derating with Frequency and
Amp-second Product (Current-time
Product) guidelines should not be
exceeded. (See Characteristics.)
Single-shot and Low Rep-rate
Pulse Measurements
These common measurements are easy
to make with the CT1, CT2 or CT6
provided that your signal fits within the
Max Pulse Current and Amp-second
Product (Current-time Product) guidelines
for the specific current probe characteris-
tics.
For example, the CT2 is rated at
36 Amps peak, with an Amp-Second
Product of 50 x 10
microseconds), therefore the CT2 can
safely handle a 36 Amp peak pulse with a
maximum width of 1.39 microseconds or
lower amplitude pulses for longer pulse
widths. The CT1, CT2 and CT6 all have
low frequency rolloff characteristics. Low
frequency “droop” will exhibit itself when
the pulse width approaches the L/R time
constant of the specific transformer.
Propagation Delay Measurements
Two CT1 or CT2 Current Transformers
with matching probe cables can be used
to measure propagation delay (transit
time) between the input and output
currents of high frequency devices. The
probe outputs are connected to the
inputs of dual channel real-time or
sampling scopes.
Verification of any Probe/Cable/Scope
System mismatch can be obtained by
passing the same signal current through
both probes and observing total system
delay difference, if any.
-6
Seconds (50 Amp-