SECTION 1 SPECIFICA TION Change information, if any, affecting this section will be found at the rear of this manual.
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SECTION OPERATING INSTRUCTIONS Change information, if any, affecting this section will be found at the rear of this manual.
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NOTE The First-Time Operation procedure along with Table 2-1 can be used to provide a confidence check of the instrument's operation. These steps should be per formed each time the 7D14 is placed in a different oscilloscope, and before each use.
SECTION 3 CIRCUIT DESCRIPTION Change information, if any, affecting this section will be found at the rear of this manual. NOTE All references to direction of current in this manual are in terms of conventional current; i.e., from plus to minus.
SECTION 4 MAINTENANCE Change information, if any, affecting this section will be found at the rear of this manual. Avoid the use of chemical cleaning agents which might damage the plastics in this instrument. Avoid chemicals containing benzene, toluene, xylene, ace tone, or similar solvents.
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component may affect its performance in the instru ment. All replacement parts should be direct replace ments unless it is known that a different component will not adversely affect the instrument performance. Do not use an ohmmeter scale that has a high internal current.
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open-end CAUTION < When disconnecting or connecting leads to a wafer type rotary switch, do not let solder flow around and beyond the rivet on the switch terminal. Excessive solder can destroy the spring tension of the contact.
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SECTION S CALIBRATION Change information, if any, affecting this section will be found at the rear of this manual.
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NOTE The performance of this instrument can be checked at any temperature within the 0° C to +50° C range unless stated otherwise.
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NOTE This procedure checks the 7D14 frequency range to 500 MHz. To check the frequency range to the maxi mum limit as given under Performance Requirement ection 1, use a constant-amplitude generator with NOTE at least a 525-MHz output. In steps one through four, the exact reading obtained depends on the accuracy of the generator dial setting.
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NOTE This instrument should be adjusted at an ambient temperature of 25° C ±5°C for best overall accuracy. NOTE Titles for external controls of this instrument are capitalized in this procedure (e.g., INPUT EN ). Internal adjustments are initial capitalized only (e.g., Ref Voltage).
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NOTE The oscillator frequency must be adjusted at an ambient room temperature of about +2tfC according to the following procedure to ensure operation within the limits given in ection 1 for an operating tempera ture range of 0° C to +50° C.
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NOTE The spring tension of the pin sockets ensures a good connection between the circuit board and pin. This spring tension may be damaged by using the pin sockets as a connecting point for spring-loaded probe tips, alligator dips, etc.
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Assembly and/or Component Detail Part of Assembly and/or Component mounting hardware for Detail Part Parts of mounting hardware for Parts of Detail Part mounting hardware for Assembly and/or Component...
SECTION 8 MECHANICAL PARTS LIST (not included w/knob) w/hardware included w/resistor) (not included w/resistor) (not included w/switch)
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(not included w/circuit board assembly) (not included w/circuit board assembly) (not included w/circuit board assembly) (not included w/circuit board assembly) (not included w/circuit board assembly) included w/subpanel) w/hardware...
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Disc (not included w/heat sink) (not included w/oscillator) (not included w/circuit board assembly) (not included w/panel) (brown) (red) (green)
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