Maintenance

The model m201 was designed to be maintenance free for many years. It is highly unlikely that your unit will require service. However, there are two adjustments that may need to be made from time to time. These procedures should be made only by a qualified service technician or at the Grace Design factory.

PEAK LED ADJUSTMENT PROCEDURE

The peak LED threshold levels may be adjusted to a user defined operating level. This circuit is set at the factory with the green threshold at -14dBu and the red threshold at +16dBu. The relationship between the two thresholds is fixed. The procedure for adjusting the greed / red threshold follows:

EQUIPMENT NEEDED

•Sine wave audio signal generator or oscillator output from a mixing console.

•Audio level meter or an RMS Volt meter with dBu or dBm scales

•Plastic alignment tool or small screwdriver

•Appropriate interconnect cables

•#2 phillips head screwdriver

PROCEDURE

1) With the power off, remove the eight phillips head screws from the top cover and remove it from the m201

2) Set all of the gain controls to the 30dB position

3) Connect the audio generator to the input of channel 1

4) Set the generator output level to approximately -20dBu @1KHz.

5) If the generator has an unbalanced output, refer to figure 2 below for termination information

6) Connect the level meter to the output of channel 1.

7) If the level meter has an unbalanced input, refer to <figure 1> for unbalanced output termination information.

8) Apply power to the generator, preamplifier, then the level meter.

9) Adjust the generator output level so that the preamplifier output level is at the desired red threshold. If the proper level can’t be reached, adjust the preamplifier gain control.

10) Locate VR2A (VR2B for channel 2) (see <figure 3>) on the channel 1 audio circuit board and adjust until the peak LED is between green and red. The color should appear amber when the setting is correct. Repeat this procedure for channel 2.

11) If it is desired to calibrate the peak indicator to a specific converter/recorder input level, simply connect the output of the preamplifer to the converter/re- corder. Adjust the signal generator so that the desired peak level is indicated on the recorder and then adjust VR1 until the peak LED is between green and red.

INPUT OFFSET ADJUSTMENT

14

grace design m201 owner’s manual

Page 13 Page 15
Page 14
Image 14
Grace M201 owner manual Maintenance, Peak LED Adjustment Procedure, Equipment Needed, Input Offset Adjustment
Page 13 Page 15

M201 specifications

The Grace M201 is a remarkable addition to the cutting-edge landscape of mid-range smartphones, designed to offer users an exceptional blend of performance, style, and functionality. Built with a sleek and modern aesthetic, the device features a premium glass and metal body that not only enhances its visual appeal but also provides a lightweight and comfortable grip.

One of the standout features of the Grace M201 is its impressive display. The phone boasts a vibrant 6.5-inch Full HD+ screen, offering a resolution of 2400 x 1080 pixels. This ensures that users experience sharp, clear visuals whether they're watching videos, browsing photos, or playing games. The display is complemented by an IPS panel, providing wide viewing angles and excellent color reproduction, making it an ideal choice for media consumption.

Under the hood, the Grace M201 is powered by a robust octa-core processor that delivers fluid performance and efficient multitasking. Coupled with up to 8GB of RAM, the device can handle demanding applications with ease, while ensuring smooth transitions between apps. Additionally, users can choose from multiple storage options, ranging from 128GB to 256GB, expandable via a microSD card, ensuring ample space for photos, music, and apps.

The Grace M201 excels in the photography department with its versatile triple-camera setup. The primary sensor features a high-resolution lens, allowing users to capture stunning images in a variety of conditions. Accompanying the main camera are an ultra-wide-angle lens and a macro lens, providing users with creative flexibility to explore different photography styles. The front-facing camera is no less impressive, featuring a high-resolution sensor and AI enhancements for beautiful selfies.

Powering the Grace M201 is a robust battery that lasts all day, offering a capacity of around 5000mAh. This ensures users can enjoy their device without the frequent worry of recharging. Fast charging technology is also supported, allowing users to quickly top up their battery when needed.

In terms of connectivity, the Grace M201 is equipped with the latest 4G LTE technology, ensuring fast internet speeds whether streaming, browsing, or gaming. Additionally, the device features dual SIM capabilities, enhancing convenience for users who rely on multiple phone numbers. For security, users can take advantage of advanced biometric options such as facial recognition and fingerprint scanning.

With a blend of advanced features, powerful performance, and an elegant design, the Grace M201 stands out as a desirable choice for anyone in the market for a reliable and feature-rich smartphone.
Top Page Image Contents