COOLER MASTER GM238-FFS Gaming Monitor User Manual

GM238-FFS
Cooler Master 23.8″ Gaming Monitor

User Manual

Requirements and Safety Notice

FCC Safety Notice
This product has been tested and determined to be meeting the limits for a Class B digital device and in compliance with Part 15 of the FCC Regulations. These requirements are set to reasonably protect the home installation environment from hazardous interference. This product will generate, use and emit radio frequency energy. Failure to install and use it as instructed may cause hazardous interference to radio communication. However, we cannot guarantee zero interference for certain installation methods.  If this product has caused hazardous interference to radio or TV reception (turn on or turn off this product to for confirmation), the user may try to make adjustment with the following methods:

• Re-adjust the angle and position of the reception antenna.
• Increase the separation between the device and receiver.
• Do not use the power sockets of the device and receiver together.
• If assistance is needed, contact the distributor or a professional radio/TV technician.

CE Compliance Statement
Cooler Master Technology Inc. hereby declares that the monitor conforms to the following key standards and other related provisions:
EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU, RoHS Directive 2011/65/EU and Directive 2009/125/EC establishing a framework for the setting of eco-design requirements for energy-related products.
Remarks:
To prevent damage of the monitor, do not lift the monitor from the support base.
Remarks: Shielded cables
To comply with the EMC requirements, a shielded cable must be used for connection between this product and any other computer device.
Remarks:
The monitor is exclusively used in the video and image display of information acquired from electronic devices.
Remarks: Peripherals
Only a peripheral device (I/O device, terminal, printer, etc.) that has been certified and met the Class B limits can be sold together with this product.
If this product is used together with any other uncertified peripheral device, it may cause interference to radio and TV reception.
Warning
Any change or modification not approved by the original manufacturer may lead to the user losing the right to operate this product. Such authorization is given by the Federal Communications Commission.
Requirements for Use
This product meets the limits under Part 15 of the FCC Regulations. Operation is subject to the following two conditions: (1) this product may not cause harmful interference, and (2) this product must accept any signal interference received, including interference that may cause undesired operation.
The following local Manufacturer/Importer is responsible for this declaration.

Product Name: LCD Monitor
Model No: GM238-FFS
Company Name: North America – CMI USA, Inc.
Address: 1 N Indian Hill Blvd Suite 200, Claremont, CA 91711, USA
Contact: Cooler Master Representative
Phone: +1-888-624-5099

Remarks: Canadian users
This Class B digital device complies with Canadian ICES-003 specifications.

Disposal of Waste Equipment by Home Users in EU
**** If this symbol appears on a product and its package, it indicates that the product cannot be disposed of together with other household waste. You have to deliver the waste equipment to a designated recycling center for recycling of waste electrical and electronic  equipment. Proper sorting and recycling of resources during the disposal of waste equipment is helpful for protecting natural resources and ensuring that resource recycling can protect human health and environment. For detailed information  about recycling centers where waste equipment is disposed of, contact the local municipal office, cleaning service or the store where the purchased product is found.

Important Safety Instructions

Please read the following instructions carefully.

1. To clean the LCD monitor screen:
   Turn off the LCD monitor and unplug the power cord.
   Spray a non-solvent cleaning solution onto a rag and clean the screen gently.

2. Do not place the LCD monitor near a window. Exposing the monitor to rain, moisture or sunlight can severely damage it.

3. Do not apply pressure to the LCD screen. Excessive pressure may cause permanent damage to the display.

4. Do not remove the cover or other things to repair the device yourself.
   An authorized technician should perform servicing of any nature

5. Store the LCD monitor in a room with a temperature of -20 °C to 60 °C (-4 °F to 140 °F).
   Storing the LCD monitor outside this range may result in permanent damage.

6. Immediately unplug your monitor and call an authorized technician if any of the following circumstances occur:
   ● Monitor to PC signal cable is frayed or damaged.
   ● Liquid spills onto the LCD monitor or the monitor is exposed to rain.
   ● The LCD monitor or case is damaged.

Package Contents

Installing the Monitor Stand and Base

www.coolermaster.com

Adjusting the Monitor

● For the best results, it is recommended to look directly at the front of the monitor and make any adjusts as necessary.
● Ensure that the monitor is mounted upright on the stand base.
● When adjusting the monitor viewing angles, avoid touching the screen and hold the stand in order to prevent it from falling over.

Wall Mount Installation Instructions

External Control Buttons

1. Menu/Navi/OK button
   Short press to turn on the monitor and Long press to turn off.
   When the OSD menu is activated, pull up/down/left/right the button to adjust the settings you need.
   When finished, you can pull the Button Back to return to the previous level or use the Button Exit to close the OSD menu.
   Remarks: Power indicator;
   Green = On;
   Orange = Power saving.

The OSD Menu and OSD Quick-Menu Symbol explanations and their functional uses are stated below.
Remarks: The following content is for reference only.The actual product specifications may vary.

| Confirm: Enter the sub-menu pointed by the cursor or edit the selected menu item.
---|---
| Exit: Close the OSD menu.
| Back: Return to the previous menu or exit edit mode.
| Up: Move the cursor up.
| Down: Move the cursor down.
| Left: Move the cursor to the left.
| Right: Move the cursor to the right.
| Increase: Increase the value.
| Decrease: Decrease the value.

Main Menu

[Input Select]

• Enter the Input Select menu to switch the input signal�

  •   * HDMI 1, 2: Maximum input signal 1920×1080@144Hz�

  • DP 1, 2: Maximum input signal 1920×1080@144Hz�

[Picture Setting]

• Enter the Picture Setting menu to adjust the picture mode.

  •   * Picture Mode: Experience different picture modes.

  • Brightness: Adjust the backlight brightness from 0 and 100.
  • Contrast: Adjust the contrast from 0 and 100.
  • Aspect Ratio: Adjust the aspect ratio of the screen.
  • Sharpness: Adjust the sharpness from 0 and 100.

[Gaming Setup]

• Enter the Game Setup menu to adjust the game mode.

  •   * Adaptive-Sync: Turn it on or off.

  • Overdrive: Select the Off, Normal, Advanced, Ultrafast, or Dynamic mode to disable or accelerate the response time.
  • Game Plus: Use game assist features such as timers and frame rate prompts.
  • Black Stabilization: Illuminate dark areas without overexposing brighter areas. The value ranges from 0 to 100.
  • Motion Clearness: Turn it on when the refresh rate is greater than 75 Hz.

[Color Adjustment]

•  Enter the Color Adjustment menu to adjust the color mode.

  •   * 6-axis Color: Adjust the hue and saturation.

  • Gamma: Turn it on in User Mode under Image Mode. Set the gamma curve to 1.8, 2.0, 2.2, 2.4, or 2.6.
  • Color Temperature: Select Bluish, Cool, Native, Warm or User Color. Adjust the value of Red, Green, and Blue in User Mode from 0 and 100.
  • Color Domain: Select Auto Mode, RGB Mode, or YUV Mode.
  • Blue Light Filter: Protect your eyes using low blue light technology to reduce blue light emission from the monitor. The value ranges from 0 and 100.

[Advanced Setting]

• Enter the Advanced Setting menu to select the advanced mode.

  •   * HDR: Turn it off or allow it adjust automatically.

  • Advanced DCR: Turn it off or allow it automatically detect the input signal brightness and backlight brightness to improve picture performance.
  • HMDI Range: Select Auto, Full Range, or Limited Range.

[Setup Menu]

• Enter the Setup Menu to select your preferred settings.

  •   * Language Select: Set the language to English, French, German, Spanish, Italian, Finnish, Russian, Vietnamese, Japanese, Korean, Traditional Chinese, or Simplified Chinese.

  • Information: View basic information about the device such as Resolution, Frame Rate, HDR, Adaptive-Sync, H. Frequency, and Pixel Clock.
  • Audio Adjust: Select Mute or adjust the volume from 0 and 100.
  • OSD Timeout: Set the timeout to 5, 15, 30, or 60 seconds.
  • OSD Background: Turn it on or off.
  • Power Indicator: Turn it on or off.
  • Auto Power Off: Turn it on or off.
  • Sleep: Select the idle time before the monitor enters Sleep mode. The value can be 30, 45, 60, or 120 minutes.
  • DDC/CI: Turn it on or off.
  • Memory Recall: Restore the settings to default values.

Specifications

DPx2
Earphone jackx1
Input video signal| HDMI signal (HDMI models only) DP signal (DP models only)
Adapter| 12 V.4.5 A
Environmental conditions| Operating temperature: 0°C to 40°C Storage temperature: —20°C to 60°C Operating humidity: 20% to 85%
Monitor dimensions (WxDxH)| 540.04×211.78×417.59 mm (with arm/base) 540.04x42x319.59 mm (without arm/base)
Box dimensions (WxDxH)| 620x115x475 mm
Weight (Net)| 3.05 kg/Unit (with arm/base) 2.79 kg/Unit (without arm/base)
Machine specifications| Tilt: -5°-15°
ComplianceThe terms HDMI, HDMI High-Definition Multimedia Interface, HDMI Trade Dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.

Specifications are subject to change without notice.
The screen may flicker and other uncomfortable phenomena when the Motion Clearness function is enabled.
Measure a screen brightness of 200 nits without audio/USB/Card reader connection.
If you have any question regarding use of the monitor, please visit: https://www.coolermaster.com/warranty

Supported Timing

[PC Timing]

Mode| Resolution| H. Frequency
(KHz)| Frame
Rate (Hz)| Pixel Clock
(MHz)| Port
---|---|---|---|---|---
HDMI1
Input| HDMI2
Input| DP1 Input| DP2 Input
VGA| 640 x480©59Hz| 31.463| 60.9286| 25.17| 0| 0| 0| 0
640 x480©60Hz| 31.5| 60| 25.2| 0| 0| 0| 0
640 x480©75Hz| 37.5| 75| 32.| 0| 0| 0| 0
640×480(§100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| o| 0
640x4800119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
640x48002120Hz| 134.866| 119.879| 296.7| 0| 0| 0| 0
640×480(§144Hz| 159.985| 144.001| 326.37| 0| 0| x| X
160.13| 144.002| 333.07| X| X| 0| 0
720 x480©59Hz| 31.469| 59.9401| 27| 0| 0| 0| 0
720 x480©60Hz| 31.492| 59.9845| 27.02| 0| 0| 0| 0
721:P(48002100Hz| 112.5| 100| 297| 0| 0| X| X
112.5| 100| 234| x| x| 0| 0
720.480@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
720×480(§120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
720×480(§144Hz| 159.985| 144.001| 326.37| 0| 0| X| X
160.13| 144.002| 333.07| X| X| 0| 0
720576©50Hz| 31.25| 50| 27| 0| 0| X| X
720576©59Hz| 67.432| 59.9394| 148.35| 0| 0| X| X
720576©60Hz| 37.879| 60.3165| 40| 0| 0| X| X
720576©75Hz| 46.875| 75| 49.5| 0| 0| X| X
720×576(§100Hz| 112.5| 100| 297| 0| 0| X| X
720.576@119Hz| 134.864| 119.879| 296.7| 0| 0| X| X
720×576©120Hz| 134.864| 119.879| 296.7| 0| 0| X| X
720×576©144Hz| 159.985| 144.001| 326.37| 0| 0| X| X
SVGA| 800 x600©59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
800×600©60Hz| 37.879| 60.3165| 40| 0| 0| 0| 0
800×600©75Hz| 46.875| 75| 49.5| 0| 0| 0| 0
800400.2100Hz| 112.5| 100| 297| 0| 0| X| X
112.5| 100| 234| x| x| 0| 0
800.6000119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
800,030002120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
800,030002144Hz| 159.985| 144.001| 326.37| 0| 0| X| X
160.13| 144.002| 333.07| x| x| 0| 0
Mode| Resolution| H. Frequency (KHz)| Frame Rate (Hz)| Pixel Clock (MHz)| Port
---|---|---|---|---|---
HDMI1 Input| HDMI2 Input| DP1 Input| DP2 Input
VESA| 1152×864@59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
1152×864@60Hz| 53.783| 59.9586| 81.75| 0| 0| x| x
67.432| 59.9394| 148.35| x| x| 0| 0
1152×864@75Hz| 67.5| 75| 108| x| x| 0| 0
1152×864@100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| 0| 0
1152×864@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1152×864@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1152×864@144Hz| 159.985| 144.001| 326.37| 0| 0| |
160.13| 144.002| 333.07| x| x| 0| 0
1280×720@50Hz| 37.5| 50| 74.25| 0| 0| x| x
1280×720@59Hz| 44.952| 59.9354| 74.17| x| x| 0| 0
1280×720@60Hz| 45| 60| 74.25| 0| 0| x| x
1280×720@100Hz| 112.5| 100| 297| 0| 0| 0| 0
112.5| 100| 234| 0| 0| x| x
1280×720@119Hz| 134.864| 119.879| 296.7| x| x| 0| 0
1280×720@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1280×720@144Hz| 159.985| 144.001| 326.37| 0| 0| 0| 0
160.13| 144.002| 333.07| 0| 0| x| x
XGA| 1024×768@59Hz| 67.432| 59.9394| 148.35| x| x| 0| 0
1024×768@60Hz| 48.363| 60.0038| 65| 0| 0| 0| 0
1024×768@75Hz| 60.023| 75.0286| 78.75| 0| 0| 0| 0
1024×768@100Hz| 112.5| 100| 297| 0| 0| 0| 0
112.5| 100| 234| 0| 0| x| x
1024×768@119Hz| 134.864| 119.879| 296.7| x| x| 0| 0
1024×768@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1024×768@144Hz| 159.985| 144.001| 326.37| 0| 0| 0| 0
160.13| 144.002| 333.07| 0| 0| 0| 0
SXGA| 1280×1024@59Hz| 67.432| 59.9394| 148.35| 0| 0| x| x
1280×1024@60Hz| 63.981| 60.0197| 108| x| x| 0| 0
1280×1024@75Hz| 79.976| 75.0247| 135| 0| 0| 0| 0
1280×1024@100Hz| 112.5| 100| 297| 0| 0| 0| 0
112.5| 100| 234| 0| 0| 0| 0
1280×1024@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1280×1024@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1280×1024@144Hz| 159.985| 144.001| 326.37| 0| 0| x| x
160.13| 144.002| 333.07| x| x| 0| 0
1366×768@59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
1366×768@60Hz| 55.935| 59.8874| 106.5| 0| 0| 0| 0
Mode| Resolution| H.Frequency (KHz)| Frame Rate (Hz)| Pixel Clock (MHz)| Port
---|---|---|---|---|---
HDMI1
Input| HDMI2
Input| DP1
Input| DP2
Input
SXGA| 1366×768@100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| 0| 0
1366×768@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1366×768@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1366×768@144Hz| 159.985| 144.001| 326.37| 0| 0| x| x
160.13| 144.002| 333.07| x| x| 0| 0
WXGA| 1280×800@59Hz| 67.432| 59.9394| 148.35| x| x| 0| 0
1280×800@60Hz| 49.702| 59.8103| 83.5| x| x| 0| 0
1280×800@100Hz| 112.5| 100| 234| x| x| 0| 0
1280×800@119Hz| 134.864| 119.879| 296.7| x| x| 0| 0
1280×800@120Hz| 134.864| 119.879| 296.7| x| x| 0| 0
1280×800@144Hz| 160.13| 144.002| 333.07| x| x| 0| 0
WXGA+| 1440×900@59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
1440×900@60Hz| 55.935| 59.8874| 106.50| 0| 0| 0| 0
1440×900@100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| 0| 0
1440×900@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1440×900@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1440×900@144Hz| 159.985| 144.001| 326.37| 0| 0| x| x
160.13| 144.002| 333.07| x| x| 0| 0
1600×900@59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
1600×900@60Hz| 60| 60| 108| 0| 0| 0| 0
1600×900@100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| 0| 0
1600×900@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1600×900@120Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1600×900@144Hz| 159.985| 144.001| 326.37| x| x| 0| 0
160.13| 144.002| 333.07| 0| 0| x| x
WSXGA+| 1680×1050@50Hz| 56.25| 50| 148.5| x| x| 0| 0
1680×1050@59Hz| 67.432| 59.9394| 148.35| 0| 0| x| x
1680×1050@60Hz| 67.5| 60| 148.5| 0| 0| 0| 0
65.29| 59.9543| 146.25| 0| 0| 0| 0
1680×1050@100Hz| 112.5| 100| 297| x| x| 0| 0
112.5| 100| 234| 0| 0| 0| 0
1680×1050@119Hz| 134.864| 119.879| 296.7| 0| 0| x| x
1680×1050@120Hz| 135| 120| 297| 0| 0| 0| 0
134.864| 119.879| 296.7| x| x| 0| 0
1680×1050@144Hz| 159.985| 144.001| 326.37| 0| 0| x| x
160.13| 144.002| 333.07| x| x| 0| 0
Mode| Resolution| H.Frequency (KHz)| Frame Rate (Hz)| Pixel Clock (MHz)| Port
---|---|---|---|---|---
HDMI1
Input| HDMI2
Input| DP1 Input| DP2 Input
FHD| 1920×1080@50Hz| 56.25| 50| 148.5| 0| 0| 0| 0
1920×1080@59Hz| 67.432| 59.9394| 148.35| 0| 0| 0| 0
1920×1080@60Hz| 67.5| 60| 148.5| 0| 0| 0| 0
1920×1080@100Hz| 112.5| 100| 297| 0| 0| x| x
112.5| 100| 234| x| x| 0| 0
1920×1080@119Hz| 134.864| 119.879| 296.7| 0| 0| 0| 0
1920×1080@120Hz| 135| 120| 297| 0| 0| x| x
134.402| 120.002| 274.18| x| x| 0| 0
1920×1080@144Hz| 159.985| 144.001| 326.37| 0| 0| x| x
160.13| 144.002| 333.07| x| x| 0| 0
[Video Timing]Video ID Code| Formats| Aspect Ratio| Field Rate (Hz)| Vertical Scanning Frequency (kHz)| Horizontal Scanning Frequency (kHz)| Pixel Clock (MHz)|

H-Total

| V-Total
---|---|---|---|---|---|---|---|---
1| 640x480p| 4:3| 59.94| 31.469| 59.94| 25.175| 800| 525
60| 31.500| 60.00| 25.200| 800| 525
2| 720x480p| 4:3| 60| 31.469| 59.94| 27.000| 858| 525

4

| 1280x720p|

16:9

| 59.94| 44.955| 59.94| 74.176| 1650| 750
60| 45.000| 60.00| 74.250| 1650| 750
14| 1440x480p| 4:3| 60| 31.469| 60| 54.000| 1716| 525
16| 1920x1080p| 16:9| 59.94| 67.433| 59.94| 148.352| 2200| 1125
60| 67.500| 60.00| 148.500| 2200| 1125
31| 1920x1080p| 16:9| 50| 56.250| 50.00| 148.500| 2640| 1125
63| 1920x1080p| 16:9| 120| 135| 119.88/120| 297| 2200| 1125
64| 1920x1080p| 16:9| 100| 112.5| 100| 297| 2640| 1125

Product Outline Dimensions

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>