Leader LS 8105A, Service Manual, Page: 5 / 66

LS 8105A/LS 8106A
SPECIFICATIONS
5
ITEMS LS 8105A LS 8106A
CRT
Type 150 mm rectangular tube with an regulator
Acceleration voltage Approx. 12 kV.
Effective area 8 x 10 divisions (1 division = 10 mm)
VERTICAL AXIS (Common to channels 1 and 2)
Sensitivity 1mV, 2mV/div.: ±5%, 5mV to 5V/div.: ±2%
Attenuation 1-2-5 steps, 12 ranges, fine control between ranges
Input impedance 1M
Ω
±1%, approx. 20 pF
Frequency DC: DC to 100 MHz
response
5 mV to 5 V/div.
AC: 5Hz to 100 MHz
(+10 to +35˚C) 1 mV to 2 mV/div. DC: DC to 20 MHz, AC: 5 Hz to 20 MHz
Rise time 5 mV to 5 V/div. Approx. 3.5 ns
(+10 to +35˚C) 1 mV to 2 mV/div. Approx. 17.5 ns
Signal delay time
The leading edge may be checked using a square wave of
the rise time less than that of this model.
Crosstalk -40 dB or less (at 1kHz)
Maximum input voltage 800 Vp-p or 400 V (DC + AC peak, 1kHz or less)
VERTICAL AXIS (CH3)
Sensitivity (+10 to +35˚C) 0.1 V /div. range: ±2% 0.1 V and 0.5 V/div. range: ±2%
Input impedance 1 M
Ω
±1%, approx. 20 pF
Frequency response (-3 dB)
(+10 to +35˚C)
DC to 100 MHz
Rise time (+10 to +35˚C) Approx. 3.5 ns
Signal delay time
The leading edge may be checked using a square wave of
the rise time less than that of this model.
Maximum input voltage 100 Vp-p or 50 V (DC+AC peak, 1kHz or less)
Single trace: CH1, CH2, CH3 or ADD single trace operation
Operation
Multi-trace: 2 to 4 traces of CH1, CH2, CH3 and ADD
ALT/CHOP: Display by selecting ALT and CHOP
ADD : Composite waveform of CH1 and CH2 signals are displayed.
Chop frequency Approx. 250 kHz (in multi-trace operation)
Channel polarity Normal or inverted, CH2 only inverted
HORIZONTAL AXIS (CH2, except for x10 MAG operation)
Sensitivity (+10 to +35˚C) 1 mV, 2 mV/div.: ±5%, 5 mV to 5 V/div.: ±3%
Input impedance Same as vertical axis (CH2)
Frequency response (-3 dB)
(+10 to +35˚C)
DC: DC to 1 MHz, AC: 5 Hz to 1 MHz
X-Y phase difference 3 ˚ or less at 100 kHz
Operation mode
X-Y mode is selected with H. MODE
CH1: Y-axis, CH2: X-axis
Maximum input voltage Same as vertical axis (CH2)
SWEEP
A : A sweep
Sweep type
ALT : Alternate A sweep and B sweep
B : B sweep
X-Y : X-Y oscilloscope operation
0.5 s to 50 ns/div. ±2%
A sweep 1-2-5 steps, 22 ranges,
Sweep time fine adjustment between ranges
(+10 to +35˚C) 50 ms to 50 ns/div. ±2%
B sweep 1-2-5 steps, 19 ranges,
fine adjustment between ranges
Sweep magnified operation x10 ±5% (±8% for over 0.5 µs/div.)
Linearity (+10 to +35˚C) ±3% (±5% in x10 MAG operation)
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