Tektronix 371B, Руководство по обслуживанию

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Specifications
371B Service Manual
1-7
Table 1-2: Step ĂGenerator (Cont.)
Characteristics Supplemental Information Performance Requirements
Voltage Mode Provides normal voltage staircase step every
time.
Step Amplitude Range 200 mV to 5 V in a 1-2-5 sequence. Selected by STEP/OFFSET AMPLITUDE
SWITCH.
Short Circuit Current Limiting 100 mA + 50 %, -20 %
Maximum Voltage 10 times STEP AMPLITUDE With 5 V STEP AMPLITUDE setting.
20 times STEP AMPLITUDE Except 5 V STEP AMPLITUDE setting.
Ripple plus Noise Within 1 % of STEP AMP 10 mV Check by Oscilloscope with 20 MHz
bandwidth.
1
Pulsed Current Response for high DUT resistance. The specific degradation occurs when the DUT resistance (Rdut) is
greater than Current sense resistor (Rsense) of the amplifier by 10 times.
The time constants for the rise time and fall time above is given as Tdut = T0 * (1 + Rdut/Rsense) where Tdut is the time
constants for DUT with Rdut resistance and T0 is the time constants for the DUT with zero resistance.
The Current sense resistors are listed as following table.
Rsense STEP AMPLITUDE (with STEP MULTI .1X on) setting
0.1 W 2 A and 1 A STEP (200 mA and 100 mA STEP)
1.0 W 500, 200 and 100 mA STEP (50, 20 and 10 mA STEP)
10 W 50, 20 and 10 mA STEP (5, 2 and 1 mA STEP)
100 W 5, 2 and 1 mA STEP (500, 200 and 100 m A STEP)
1.0 k W 500, 200 and 100 m A STEP (50, 20 and 10 m A STEP)
10 k W 50, 20 and 10 m A STEP (5, 2 and 1 m A STEP)
100 k W 5, 2 and 1 m A STEP (500, 200 and 100 nA STEP)
Table 1-3: VerticalĂ Deflection ĂSystem
Characteristic Performance Requirement Supplemental Information
Collector Current (Ic) Range Varies in Collector Supply Peak Power Watts
3 kWpeak power watts 1 A/div to 50 A/div
300 Wpeak power watts 500 mA/div to 5 A/div
30 Wpeak power watts 100 m A/div to 5 mA/div
3 Wpeak power watts 10 m A/div to 500 m A/div
0.3 Wpeak power watts 10 m A/div to 500 m A/div