Should you wish to make a new setting or lose your original one in any circumstances, please follow the procedures below. This service allows you to access in Hong Kong or overseas. When you access the services from overseas, roaming charges will be incurred. (I) Setup for local and overseas WAP Services
Source : one2free.hkcsl.com
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Showing posts with label LG. Show all posts
Showing posts with label LG. Show all posts
Sunday, July 12, 2009
LG KE770 WAP ,MMS and IMAP E-Mail Service Setup Guide
DB-800 Daughterboard for MOTM-800 User Guide
The DB-800 is a daughterboard for the MOTM-800 EG. The DB-800 adds a comparator to the GATE input and a clipper to prevent the EG output from rising above +5 volts. The MOTM-800 requires a relatively fast rising signal at the GATE input to generate an envelope. Slow rising signals, like the SINE output from an LFO, will not normally trigger the MOTM-800. The comparator squares up any signal at the GATE input so that any voltage rising above +1.4 volts will trigger the EG. Two optional LED drivers are also provided, one for the GATE input and another for the EG output.
A comparator with hysteresis is built around U1. R1 and R2 set the upper trip point at approximately +1.4 volts. When the signal at the GATE input rises above the upper trip point, the output from U1 rises very quickly from 0 to +15 volts. The output from U1 stays at +15 volts until the signal at the GATE input goes below the lower trip point (approximately +1.2) volts. U1 then drops very quickly from +15 volts to 0 volts and stays there until the signal at the GATE input rises above the upper trip point again. This comparator circuit is placed between the GATE jack on the MOTM-800 panel and the GATE input pads on the MOTM-800 motherboard to generate a fast rising GATE from any input signal. U2b is a simple LED driver that turns on the GATE LED whenever the output from U1 goes high.
A comparator with hysteresis is built around U1. R1 and R2 set the upper trip point at approximately +1.4 volts. When the signal at the GATE input rises above the upper trip point, the output from U1 rises very quickly from 0 to +15 volts. The output from U1 stays at +15 volts until the signal at the GATE input goes below the lower trip point (approximately +1.2) volts. U1 then drops very quickly from +15 volts to 0 volts and stays there until the signal at the GATE input rises above the upper trip point again. This comparator circuit is placed between the GATE jack on the MOTM-800 panel and the GATE input pads on the MOTM-800 motherboard to generate a fast rising GATE from any input signal. U2b is a simple LED driver that turns on the GATE LED whenever the output from U1 goes high.
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