Tektronix 1A5 Instruction Manual page 17

dark green
Gain Switching Knob-
" Retained" Switching-
Position Indicators
(B ) .5 V/CM sensitivity with ±500 V
Input Signal Range,
Equivalent Comparison
Range, ±500 V maximum DC +
AC Input Voltage Range.
TABLE 2-1
Front Panel Color Coding
Attenu ­ Input
ator
Signal
Color in use
Range
Light ×1
±5 V
green
Medium
×10 ±50 V
green
Dark
×100 , ±500 V
green
×1000
' In A -В operation this value
that may exist between the A
(Al VOLTS /СМ control nomenclature.
1C) .1 V/CM sensitivity with ±500 V
±500V Input Signal Range retained.
Voltage
Fig. 2-9. VOLTS /СМ control; detailed description.
Equiva ­
lent
Compar ­
Maximum
ison Input
Voltage Voltage
Range Range 1
±5 V ±100 V
±50 V ±500 V
±500 V ±500 V
refers to the maximum difference
and В input voltages.
Operating Instructions — Type 1A5
medium green
light green
Sensitivity Indicator
Range Indicators
Range Indicator
(DI .1 V/CM sensitivity with ±50 V Input
Signal Range, ±50V Equivalent Com ­
parison Voltage Range and
maximum
Range.
The gain switching knob and the range indicator flange
are normally slaved together by a spring loaded key and
detent arrangement The gain switching
released from the range indicator flange at two switch
positions. When the deflection factor and range indicators
are aligned with either of the black triangles which appear
in the green arcs, the gain switching knob can be pulled
out approximately one eighth of an inch and rotated clock ­
wise to either of the next two deflection factor positions.
This arrangement allows retention of a larger attenuation
factor, a higher Input Signal Range and a higher Equiva ­
lent Comparison Voltage than is normally possible for the
deflection factors involved.
at in this manner will be referred to as "Retained Range"
positions.)
Note that when "Retained Range" positions are used the
attenuator, the Input Signal Range, the Equivalent Com-
Flange
±500V
DC + AC Input Voltage
knob can be
(VOLTS /СМ positions arrived
2-9