Tektronix 2230

General Information—2230 Service
Table 1-1 (cont)
Characteristics Performance Requirements
NON STORE Common-Mode Rejection Ratio
(CMRR)
At least 10 to 1 at 50 MHz.
Checked at 10 mV per division for common-mode signals of six
divisions or less with the VOLTS/DIV Variable control adjusted for
the best CMRR at 50 kHz.
Input Current
1 nA or less (0.5 division or less trace shift when switching
between DC and GND input coupling with the VOLTS/DIV switch
set to 2 mV per division.®
Input Characteristics
Resistance
1 Mfl ± 2%.a
Capacitance
20 pF ±2 pF.a
Maximum Safe Input Voltage *
(CH 1 and CH 2) Z j \
400 V (dc + peak ac) or 800 V ac p-p at 10 kHz or less.®
See Figure 1-1 for maximum input voltage vs. frequency derating
curve.
NON STORE Channel Isolation* Greater than 100 to 1 at 50 MHz.
STORE Channel Isolation
100 to 1 at 50 MHz.
POSITION Control Range At least ± 11 divisions from graticule center.
A/B SWP SEP Control Range
(NON STORE Mode Only)
±3.5 divisions or greater.
Trace Shift with VOLTS/DIV Switch Rotation 0.75 division or less; VOLTS/DIV Variable control in the CAL
detent.®
Trace Shift as the VOLTS/DIV Variable Control is
Rotated
1 division or less.®
Trace Shift with INVERT
1.5 division or less.®
'Performance Requirement not checked in Service Manual.
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