Specifications
1-6
371B Service Manual
Table 1-2: Step ĂGenerator (Cont.)
Characteristics
Supplemental Information
Performance Requirements
Step Rate
3 kW peak power watts
OneĆfourth (.25 X) the line frequency
300 W peak power watts
OneĆhalf (.5 X) the line frequency
30 W, 3 W, 300 mW, 30 mW
peak power watts
Twice (2 X)the line frequency
Current Mode
Provides current staircase or pulsed current
step.
Amplitude Range
Selected by STEP/OFFSET AMPLITUDE
SWITCH.
Normal Step
1
m
A to 2 mA in a 1-2-5 sequence.
COLLECTOR SUPPLY HIGH VOLTAGE
MODE (30 W/ 3 W and 300 mW/ 30 mW)
Pulsed Step
1 mA to 2 A in a 1-2-5 sequence.
COLLECTOR SUPPLY HIGH CURRENT
MODE (3 kW/ 300 W)
Maximum Current
20 times step amplitude, except 10 times
STEP/OFFSET AMPLITUDE when control is
set to 2 A per step.
Maximum Voltage
12 V, +30 %, -30 %
Accuracy: At least 5 V.
Ripple plus Noise
Within 1 % of S TEP AMP 10 nA
Check by Oscilloscope with 20 MHz
bandwidth.
Maximum Inductive Load
1
m
H
Maximum Resistive Load
500
W
At 1 mA/step without STEP MULTI .1X
Accuracy: At least 5 V.
Maximum Capacitive Load
1000 pF
Pulsed Current Step
Valid for STEP GENERATOR Current mode.
When Pulsed Collector Supply (PEAK
POWER WATTS3 kW/ 300 W) is selected,
STEP CURRENT becomes pulsed step
automatically.
Pulse Width
500
m
s +10 %, -10 %
With 1 k
W
load, 1 mA/step with STEP MULTI
.1X off.
Rise Time
1
Less than 40
m
s
With 1 k
W
load, 1 mA/step with STEP MULTI
.1X off.
Fall Time
1
Less than 40
m
s
With 1 k
W
load, 1 mA/step with STEP MULTI
.1X off.
Overshoot/
Undershoot
Less than 10 %
With 1 k
W
load, 1 mA/step and zero Variable
Collector Supply.
Summary of Contents for 371B
Page 4: ......
Page 14: ...Service Safety Summary 371B Service Manual...
Page 18: ...Preface 371B Service Manual...
Page 21: ...Specifications...
Page 22: ......
Page 24: ...Product Overview 371B Service Manual...
Page 38: ...Specifications 371B Service Manual...
Page 39: ...General Information...
Page 40: ......
Page 58: ...General Information 371B Service Manual...
Page 59: ...Theory of Operation...
Page 60: ......
Page 62: ...Theory of Operation 3 2 371B Service Manual Figure 3 1 371B Block Diagram...
Page 71: ...Maintenance...
Page 72: ......
Page 101: ...Performance Verification...
Page 102: ......
Page 220: ...Performance Verification 371B Service Manual...
Page 221: ...Options...
Page 222: ......
Page 226: ...Options and Accessories 371B Service Manual...
Page 227: ...Electrical Parts List...
Page 228: ......
Page 235: ...Diagrams...
Page 236: ......
Page 237: ...8 1 371B Service Manual Circuit Board Interconnections 2 2...
Page 238: ...371B Service Manual...
Page 239: ...8 3 371B Service Manual Circuit Board Interconnections 2 2...
Page 240: ...371B Service Manual...
Page 241: ...8 5 371B Service Manual Test Point Adjustment Locations 1...
Page 242: ...8 6 371B Service Manual Test Point Adjustment Locations 2...
Page 243: ...8 7 371B Service Manual Test Point Adjustment Locations 2...
Page 244: ...8 8 371B Service Manual Test Point Adjustment Locations 3...
Page 245: ...8 9 371B Service Manual Troubleshooting Tree...
Page 246: ...8 10 371B Service Manual Troubleshooting Tree Cont...
Page 247: ...8 11 371B Service Manual Troubleshooting Tree Cont...
Page 248: ...371B Service Manual...
Page 249: ...Mechanical Parts List...
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Page 259: ...9 9 371B Service Manual Figure 9 1 Cabinet Rear 97 96 68...
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Page 261: ...9 11 371B Service Manual Figure 9 2 Display Front 73...
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Page 267: ...9 17 371B Service Manual Figure 9 3 Chassis Ciircuit Board...
Page 268: ...371B Service Manual...
Page 269: ...9 19 371B Service Manual Figure 9 4 Power Supply...
Page 270: ...371B Service Manual...
Page 276: ...Mechanical Parts List 371B Service Manual...
Page 277: ...9 27 371B Service Manual Figure 9 5 Test Fixture 78 78 REV MAR 96 75 72...
Page 278: ...371B Service Manual...
Page 279: ...9 29 371B Service Manual Figure 9 6 Front Porch...
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