Specifications
The following table lists the electrical characteristics of the CT-1 and CT-2
Transformers when they are connected to the P6041 Probe cable.
Table 1: Ele
ctrical characteristics
Specification CT-1 with P6041 Probe CT-2 w ith P6041 P robe
Sensitivity 5 mV/mA, ±3% into a 50 Ω load 1 mV/mA, ±3% into a 50 Ω load
Pulse Resp
onse
Rise time: < 0.35 ns, 10% to 90%
Aberrations: < 5% as seen by a 1 GHz
system
Rise time: < 0.5 ns, 10% to 90%
Aberrations: + 4%, -8% as seen by a
200 MHz sy
stem
L/R time c
onstant
Approximately 5 μs Approximately 125 μs
Insertion Impedance
50 Ω term
ination: 1 Ω shunted by
approximately 5 mH
Unterminated: 2 Ω shunted by approximately
5mH
50 Ω term
ination: 0.04 Ω shunted by
approximately 5 mH
Unterminated: 0.08 Ω shunted by
approxi
mately 5 mH
Freque
ncy Response, affected by
DC component of current (See
Figure 2.) (See Figure 3.)
25 kHz t
o1GHz
1.2 kHz to 200 MHz
Turns Ratio 1:5 1:25
Capacitive Loading #14 bare wire: typically 1.5 pF
#20 bare wire: typically 0.6 pF
#16 bare wire: typically 1.8 pF
#22 bare wire: typically 0.7 pF
Maximum Bare Wire Voltage
(uninsulated)
30 VAC
42 Vp
k
30 VA C
42 Vp
k
Sig
nal Delay (with P6041 Probe
Cable)
App
roximately 2.8 ns measured from 50%
points on leading edge of the current step
and output voltage
CT
-1 Transformer only: 0.4 ns
App
roximately 5.8 ns measured from 50%
points on leading edge of the current step
and output voltage
CT
-2 Transformer only: 0.3 ns
Ef
fect of Direct Current (See
Figure 5.) (See Figure 6.)
Approximately 0.3 A
DC
increases decay by
af
actor of 2
Approximately 0.3 A
DC
increases decay by
af
actor of 2
Amp × Second Rating
1
A·μs
When this product is exceeded, the core
saturates and the CT-1 output drops to zero
5
0A·μs
When this product is exceeded, the core
saturates and the CT-2 output drops to zero
Pulse Current Rating
12 A 36 A
RMS Current Rating
0.5Amaximum 2.5Amaximum
Maximum Injection Voltage 7 V
p-p
7V
p-p
Signal Connector Amphenol Sub-Minax #27-3 Amphenol Sub-Minax #27-3
CT-1 and CT-2 Current Transformer Instructions 9
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