Sharp CD-G22000 Specifications Page 35
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- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
target temperature is displayed in cyan color on the graph. The current chip
temperature is displayed in red. Also notice the blue line, which displays the
cooling utilization – it starts to grow from 0% to higher values.
Also notice the yellow line in the graph – it displays camera internal
temperature. This temperature also somewhat grows as the cooling utilization
grows. The hot air from the Peltier hot side warms up the camera interior
slightly.
How fast can be the chip cooled? Can be the chip damaged, if it is cooled too
fast? Unfortunately the maximum speed of temperature change is not defined
for Kodak CCD chips (at last the author does not know about it). But in general
slow temperature changes cause less stress to electronic components than rapid
changes. The SIMS temperature change speed default value is 3 °C per minute.
It is usually no problem to switch the camera earlier and to provide time for
slow cooling. However, if it is necessary to cool the camera rapidly, alter the
“Max. dT” value.
It is also easier to achieve higher temperature differences if the temperature is
changed only slowly. Switching the Peltier cooler from zero to 100%
immediately provides a lot of heat and, especially in the case of air-cooled
Peltier, the overall camera temperature can raise more than necessary. The
result is the chip temperature is higher in absolute numbers, because the hot-
side temperature is also higher. It takes long time before the hot side slowly
settles.
What is the best temperature for the CCD chip? The answer is simple – the
lower the better. But the minimum temperature is limited by the camera
construction. The G2 CCD cameras are equipped with two-stage cooler, which
can cool the chip up to 50 °C below ambient temperature with air cooling. But
it is not recommended to use maximum possible cooling. If the environment
conditions change, the camera may be unable to regulate the temperature if the
environment air temperature rises. Set the target temperature, which requires
approx. 85% of the cooling utilization. This provides enough room for e.g.
environment temperature changes etc.
The power supply voltage is also displayed in the “Cooling” tab. Especially
when the camera is powered from 12 V battery, this information can be used to
estimate when the battery should be replaced and recharged. Note that working
with less intensive cooling can significantly prolong the battery life.
35
- Operating 1
- Table of Contents 3
- Introduction 5
- CCD Chip 10
- Model G2-0402 11
- Model G2-1600 11
- Model G2-3200 12
- Model G2-2000 12
- Model G2-4000 12
- Camera Electronics 13
- CCD Chip Cooling 15
- Power Supply 16
- Mechanical Specifications 17
- Package Contents 18
- Optional components 19
- LRGB filter set 20
- Clear (C) filter 21
- UBVRI filter set 21
- Separate filters 21
- Telescope adapter 22
- Getting Started 24
- SIMS Software Installation 26
- G2 CCD Camera Driver for SIMS 27
- Camera Connection 29
- Working with Multiple Cameras 30
- Camera Operation 32
- Camera and the Telescope 33
- Temperature Control 33
- °C per minute 35
- First Images 36
- Calibration 38
- Balancing colors 45
- Some General Rules for 47
- Successful Imaging 47
- Camera Maintenance 50
- Changing Filters 54
- Power Supply Fuse 58
LG 32LD575 Handbücher
Bedienungsanleitungen und Benutzerhandbücher für Fernseher LG 32LD575.
Wir stellen 1 PDF-Handbücher LG 32LD575 zum kostenlosen herunterladen nach Dokumenttypen zur Verfügung Bedienungsanleitung
Inhaltsverzeichnis
Quantità
10
PREPARAZIONE
11
AVVERTENZA:
12
KENSINGTON
16
UN'ACCURATA
16
AV1 del
23
PLAY sul
23
(Su/Giù/
32
MENU RAPIDO
37
SOLO LNB
43
(DiSEqC)
44
DIAGNOSTICA
49
ELENCO INPUT
54
ELENCO FOTO
60
TRUMOTION
95
INFINITE SOUND
100
MENU/EXIT
101
RESET AUDIO
104
BLOCCO PROGRAMMI
113
TELETEXT
116
APPENDICE
118
Modello:
122
N. di serie:
122
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