Tektronix 475A - Operators Specifications; Oscilloscope; Vertical

OPERATOR’S SPECIFICATIONS
Refer to the service manual for complete specifications. Specifications given are for an operating range of 0°C to
+40°C unless otherwise stated.
475A OSCILLOSCOPE
VERTICAL
Deflection Factor Accuracy: Within 3% in the calibrated
position.
Frequency Response: Dc to at least 250 MHz for CH 1
and CH 2. AC-coupled, low-frequency response is 10 Hz
or less. Use of a 10X probe extends frequency response to
1 Hz.
Risetime: 1.4 nanoseconds or tess (calculated from 0.35
+ bandwidth in MHz).
Maximum Input Voltage: Dc-coupled 250 V (dc + peak
ac) or 500 V p-p ac at 1 kHz or less; ac-coupied, 500 V (dc
+ peak ac) or 500 V p-p ac 1 kHz or less.
62 | 475A/DMA4 Operators
Positive-Going Step Aberrations: Less than +3%, —3%,
not to exceed 3% peak-to-peak, excluding the ADD mode.
Common-Mode Rejection Ratio (ADD Mode with CH 2
inverted): At least 10:1 at 20 MHz for common. mode
signals of 6 divisions or less with GAIN adjusted for best
CMRR at 50 kHz.
Input Gate Current: 0.5nA or less (0.1 div at
5 mV/DIV), from —15°C to -+30°C.
Channel Isolation: At least 100:1 at 25 MHz.
CHOP Mode Repetition Rate: Approximately 250 kHz.
Cascaded Operation (CH 2 OUT into CH 1) sensitivity:
Approximately 2.5 mV/DIV. Bandwidth is dc to at least: