Rear Panel; Rear Panel; Menu System Controls - Tektronix 2247A Operator's Manual

Controls, Connectors, ancl Indicators
Rear Panel
Refer to Figure 2-6 for location of items 39 through 42 .
CAUTION
TO AVOID ELECTRIC SHOCK THE POWER CORD
PROTECTIVE GROUNOING CONDUCTOR MUST BE
CONNECTED TO GROUND
DO NOT REMOVE CDVEAS REFER SERVICING TO
QUALIFIED PERSONNEL
DISCONNECT INPUT POWER BEFORE RE PLACI NG FUSE
FDR CDNTINUED FIRE PROTECTION REPLACE ONLY
W ITH SPECIFIED TYPE AND RATED FUSE
POWER MAX WATTS 100
MAX VA 155
FREQUENCY 4B -440Hz
LINE VOLTAGI Ag
90 -250V \C
FUSE 25l 1
2A SL0\/1
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TO RE MOVE POWER CO RO
OISCONNECT PLUG AN O
ROTATE RETAINER CLIP 90 °
THIS INSTRUMENT MAY BE PROTECTEO
BY ONE OR MORE US OR FO REIGN
PATENTS OR PATENT APPLICATIONS
INFORMATION PROVIOEO ON REOUEST
TEKTRON IX INC , BEAVERTON , OREGON . U SA
Figure 2-6. Rear panel.
EXT Z AXIS INPUT IOKn
POSITIVE GOING INPUT
OECREASES INTEN SITY
6373 08
EXT Z-AXIS INPUT Connector-Connects external signals to the
Z-Axis amplifier for intensity modulating the crt display.
Signals applied to the EXT Z-AXIS INPUT do not affect di splay
wave shape . Signals with fast rise times and fall times provide t he
most abrupt Intensity change. The active region threshold level Is
1 . 8 V. A Z-Axls voltage above the threshold voltage of 3 . 8 V
produces noticeable modulation. The Z-Axis signals must be
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2247 A Operators
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Controls, Connectors, and Indicators
time-related to the displayed signal to obtain a fixed Intensity-
modulated crt display.
EXT COUNTER/TIMER TIME BASE INPUT Connector-Connects
an external reference oscillator signal to the Counter /Timer . This
signal must be 1 , 5 , or 10 MHz
±
2 % , with at least 1 Volt p-p ampli-
tude . The Counter /Timer will automatically switch to this signal , when
present, and provide an indication in the readout.
Fuse Holder-Contains the primary power fuse.
Power Cord Receptacle-Connects t;t,e ac power source to the
Instrument power supply .
The power cord protective-ground connection Is connected to the
exposed metal parts of the instrument. T, h e power cord must be con-
nected to a properly grounded source for electrical-shock protection.
• f
Menu System Controls
Refer to Figure 2-7 for location of Items 43 through 49
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..J
J
Menu Item Select Buttons-Select Items from tt1e list displayed on
the right side of a displayed menu. A Menu It.em Select button that
has no corresponding menu Item does nothing when pressed. The
menu display will clear when the Item Is selected (unless the SERVICE
mode CONFIGURE menu Is set for: KEEP MENU ON WHEN ITEM
SELECTED? YES). The factory settings default Is NO.
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You can access the Service Mode by pressing the top and bottom
Menu Item Select buttons at the same time. This should only be done
when no other menu Is displayed, as unwanted selections on the dis-
played menu could occur. See "Service Menu Features" In Section 3
for using the operational modes of the SERVICE MENU.
2247 A Operators
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