800-572-1028 caltestelectronics.com 10
Specifications
All specifications apply to the unit after a temperature stabilization time of 20 minutes over an
ambient temperature range of 25 °C ± 5 °C.
Electrical Specifications
CT3686
CT3687
Bandwidth (-3dB)
100 MHz (driving 1 MΩ oscilloscope input)
Rise Time (10%-90%)
3.5 ns
Attenuation ratio
10x/100x
100x/1000x
Accuracy
±2%
CMRR (typical)
-85 dB @ 50 Hz
-55 dB @ 1 MHz
-80 dB @ 60 Hz
-50 dB @ 1 MHz
Maximum Differential Input
Voltage
(DC + AC peak)
±70 V @ 10x
±700 @ 100x
±140 V @ 100x
±1400 @ 1000x
Maximum Common Mode Input
Voltage
(DC + AC peak)
±700 V
±1400 V
Absolute Maximum Rated Input
Voltage (each side to ground)
700 Vrms CAT II
1000 Vrms CAT II
Input Impedance
4 MΩ // 7 pF (each side to ground)
Output Voltage Swing
±7 V (driving 1 MΩ oscilloscope input)
Offset (typical)
±5 mV
Noise (typical)
0.9 mVrms
Source Impedance
50 Ω
Power Supply
4 AA batteries (included) or
CT3723 power adapter (optional)
CT4122 USB power lead (optional)
Mechanical Characteristics
Weight
500 g
Dimensions
207 x 83 x 38 mm
BNC Cable Length
90 cm
Input Leads Length
30 cm each
