Tektronix 2221A User Manual

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Appendix B: Specification
Table A-4: Electrical Characteristics (Cont.)
Characteristics Performance Requirements
Power Supply
Line Voltage Range 90 VAC to 250 VAC1
Line Frequency 48 Hz to 440 Hz1
Maximum Power Consumption
85 watts (150 VA)1
Line Fuse
2 A. 250 V, slow blow1
Primary Circuit Dielectric Requirement
Routine test to 1500 VRMs> 60 Hz, for 10 seconds without
breakdown.1
M M * M U M fN ^ , * |
CRT Display
Display Area
8 cm X 10 cm.1
Standard Phosphor
P311
Nominal Accelerating Voitage
14 kV1
4.2 V Output
±10% through 2 kQ.1
Memory
Power-Down
Battery Voitage
Memory retained for battery voltages greater.than 2.3 V.1
Data Retention
Memory maintained at ieast 6 months without instrument
power.1
Battery Life Power-down data retention specification shall be maintained
for 3 years without battery change.
Power-Down Detection
Threshold
Fail asserted for supply drop to less than 4.5 V.1
Reset held until supply is greater than 4.75 V.1
Reset Defay
Power-down interrupt to reset delay > 1 ms.1
Performance requirement not checked in manual.
A-20
Appendices

Tektronix 2221A Specifications

General

Brand	Tektronix
Model	2221A
Category	Test Equipment
Language	English