Operating Basics
2- 12
ECO422D SD/HD Changeover Unit Instruction Manual
NOTE
. If you cannot adjust R265 satisfactorily, move the cables from Channel 1
to Channel 7, open S1-7, close S7-7 and activate the Channel 7 attenuator by
closing S1-8. Repeat the adjustment steps starting with step 6.
Adjust R266 in the same manner to set a user-defined level for S1--6 through
S11--6.
Hex switch S13
5
(see Figure 2--2) sets the delay between the time power is
applied and the time the ECO422D starts error detection. Each position of the
switch increments the delay approximately 30 seconds, from position 0 (no
delay) to position F (over seven minutes). The factory setting is position 5,
which provides a delay of slightly under three minutes.
Exterior Cleaning
Clean the instrument often enough to prevent dust or dirt from accumulating.
Dust accumulating in the instrument acts as an insulating blanket, preventing
proper cooling, and possibly causing overheating and component breakdown.
Under high humidity conditions, accumulated dust can also provide an electrical
conduction path.
CAUTION.
To avoid damage to the instrument, do not expose it to sprays, liquids,
or solvents. Do not use chemical cleaning agents; they can damage the
instrument. Avoid chemicals that contain benzene, toluene, xylene, acetone, or
similar solvents.
Clean the exterior surfaces of the instrument with a dry, lint-free cloth or a
soft-bristle brush. If dirt remains, use a cloth or swab dampened with a 75%
isopropyl alcohol solution. A swab is useful for cleaning in narrow spaces
around the controls and connectors. Do not use abrasive compounds on any part
of the instrument.
CAUTION.
Avoid getting moisture inside the instrument during exterior cleaning
and use only enough solution to dampen the cloth or swab. Use a 75% isopropyl
alcohol solution as a cleanser, and rinse with deionized water.
5
Serial number B030000 and later.
How to Set the Power Up
Delay
Содержание ECO422D
Страница 4: ......
Страница 10: ...Table of Contents vi ECO422D SD HD Changeover Unit Instruction Manual...
Страница 14: ...Service Safety Summary x ECO422D SD HD Changeover Unit Instruction Manual...
Страница 16: ...Environmental Considerations xii ECO422D SD HD Changeover Unit Instruction Manual...
Страница 18: ...Preface xiv ECO422D SD HD Changeover Unit Instruction Manual...
Страница 19: ...Getting Started...
Страница 20: ......
Страница 36: ...Getting Started 1 16 ECO422D SD HD Changeover Unit Instruction Manual...
Страница 37: ...Operating Basics...
Страница 38: ......
Страница 51: ...Specifications...
Страница 52: ......
Страница 64: ......
Страница 65: ...Theory of Operation...
Страница 66: ......
Страница 71: ...Performance Verification...
Страница 72: ......
Страница 95: ...Adjustment Procedure...
Страница 96: ......
Страница 98: ...Adjustment Procedure 6 2 ECO422D SD HD Changeover Unit Instruction Manual...
Страница 99: ...Maintenance...
Страница 100: ......
Страница 111: ...Replaceable Electrical Parts...
Страница 112: ......
Страница 114: ...Replaceable Electrical Parts 8 2 ECO422D SD HD Changeover Unit Instruction Manual...
Страница 115: ...Replaceable Mechanical Parts...
Страница 116: ......
Страница 122: ...Replaceable Mechanical Parts 9 6 ECO422D SD HD Changeover Unit Instruction Manual...
Страница 124: ......
Страница 125: ...Appendices...
Страница 126: ......
Страница 128: ...Appendix A Options A 2 ECO422D SD HD Changeover Unit Instruction Manual...