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home>>Tech Articles>>Tech Article #4
Installment Four: "A Tour of the Marquee CRT Chassis: Utilities Menu"
These menus provide access to many useful features required for initial setup, and ongoing maintenance, to keep the image quality at the highest level. Features deemed Technician Only are passcode protected; the Utility menu (see PIC 1) reads as follows:
UTIL, 1 Source Setup (see PIC 2)

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UTIL, 1, 1 Copy Setup: An installer or user can copy all parameters from a previously aligned memory to another Input or recall memory as a starting point to save time. (see PIC 3) A typical use might be to take a memory set up for a scaler or HTPC aligned for a 1.78:1 aspect ratio DVD and copy it to another recall intended for use when viewing 2.35:1 aspect DVDs; the primary differences being raster height and perhaps subtle geometry changes like side pincushion. The user enters the Copy From info and Copy To info and then presses Enter to complete the copy of parameters. The Copy To memory cannot be locked or you get a Copy Failed message on screen. (see PIC 4) To unlock a locked memory you must pull up that memory and key in UTIL, 1, 3. If unsure if a memory is locked, pull up the memory and push the Source button; a locked memory will display source info and a Key icon, unlocked memories do not display the Key (see PIC 5 and PIC 6).

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UTIL, 1, 2 ASI with Save: This permits instant creation of parameters for a new signal not yet in any setup memory, done by taking averages of existing parameters with lower and higher scan rates. Acronym "ASI" is short for Auto Source Interpolation, which is a function under the ASR or Auto Source Recall feature. ASR, if switched On for a given input; pulls up setup memories that are priorly established by matching the incoming scan rates to those held in memory. Established memories can be viewed on-screen by selecting UTIL, 3 or UTIL, 4.(see PIC 7 and PIC 8) Memories with a check mark next to them in these readouts are the last memory for those scan rates that saw a user adjustment; ASR will only select those with checks. These features do not offer much usefulness in an HT situation where many signals may all have the same horizontal and vertical scan rates, and different aspect ratios. With ASR on, the user cannot even force the system to another memory using the same scan rates; the feature works against the intent of the user and is best left off.

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UTIL, 1, 3 Current Setup Locked/Unlocked: This feature blocks or permits permanent changes to parameters in the memory currently being used. Any changes made to a locked memory are dumped when switching away to another memory or if powering down.
UTIL, 1, 4 ASR On/Off: This toggle enables or disables ASR and ASI as discussed above, and is selectable per input port, not globally.
UTIL, 1, 5 Clear Current Setup: The user may reset the memory currently being used back to defaults if it is not locked.
UTIL, 1, 6 Select Internal Frequency: The user may select from a menu (see PIC 9) any of six scan rates from a signal generator internal to the Marquee; this is useful in roughing in setups when the signal is unavailable, or in projector or source troubleshooting. If the Marquee can lock to an Internal Frequency but not an external source then a technician may need to check cables and sources instead of the Marquee chassis.

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UTIL, 2 Channel List: The user may program Input Ports, Recallable Memories if needed, and source or signal names into a table that then allows the user to select from the table with one or two keypad presses, or by pushing Source, Up; a fast way to select sources and setup memories. (see PIC 10)

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UTIL, 3 Recall Memories: A readout of priorly established Recall Memories and the horizontal and vertical frequencies of those signals.
UTIL, 4 Input Memories: A readout of priorly establish memories that are dedicated to the RGBHV and Decoder (if installed) ports; each port has one dedicated memory, that memory is often replaced by a Recall Memory when one signal source needs multiple setups to accomodate different aspect ratios or scan rates.
UTIL, 5 Preferences: The user can select to enable or disable (see PIC 11) features such as Auto Powerup, which restarts the projector if AC power is interrupted; Screen Messages On/Off, which disables the Source, Contrast, Brightness and other OSD's while still permitting adjustments of those settings. If the user presses Recall then Contrast, the on-screen display is enabled for that adjustment only, then is disabled again. Other selections available in Preferences include selection of image blanking time when switching sources; Channel Select using one or two digits; OSD languages which include English, French, Italian and German; and Programmable Events.

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UTIL, 6 Remote Control Options: (see PIC 12) The user or installer call select IR sensor On or Off as well as the IR Protocol A or B (language) (see PIC 13) which is useful in rooms having several Marquee projectors which must be communicated with individually. A user may also set a unique three-digit address (see PIC 14) for any Marquee to enable keypad communication with that projector only. To read out a projector's address push the PROJ key. If two projectors have unique addresses 000 and 111, the user may key in "PROJ 000" by IR keypad so that the IR is read by both; the projector not having address 000 will have IR reception disabled until it sees either PROJ 111 or PROJ * transmitted. In home theater situations this feature is rarely employed unless two Marquees are stacked onto one screen.

Note that if your Marquee suddenly stops receiving IR commands then someone may have de-selected it using a command of PROJ and some digits; push PROJ * to resume IR useage, or check for weak batteries in the IR keypad, or an obstruction of the IR sensor, which is located on the front of the Marquee next to the red lens.

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UTIL, 7 Clock/Events: The Marquee may be programmed to turn on each day, shut off at night, and perform housekeeping functions like AutoConvergence; mostly used in commercial environments.
UTIL, 8 -------- Nothing to select, reserved for future use.
UTIL, 9 Service: An array of alignments for installation and maintenance (see PIC 15), passcode protected (passcode is "0901"), for technicians and advanced end users. The Service Menu selections and their alignments will be the subject of our next Article.

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Our Marquee Chassis Tour will be continued in the next installment.
Tim at E-Tech Systems Phoenix
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