Helpful Tips for Programming HT/CDM series
Posted: Sat Sep 28, 2002 3:13 pm
Taken right off the M website. Many people know these things, but it can't hurt to try & spread the knowledge around.
Todd
In an effort to assist you in the optimal programming of your customer's HT750, HT1250, HT1250LS, CDM750, CDM1250, CDM1550 and CDM1550LS radios, we have listed a few programming tips. The following suggestions will assist you in improving the functionality of our customer's radios. Please note that these programming tips may not be applicable to your particular customer's requirements:
Applicable to Portables and Mobile radios
If you are using Post PTT ID, you may want to decrease the DOS Auto Mute Duration to 25 ms (found under MDC System, DOS section). Also, if you are using Post PTT ID, you may want to turn off Tx pre-time, and set it to zero (found under MDC System, Advanced Section). This will help to make sure that the initial transmit is not interrupted.
De-emphasis and Pre-emphasis should always be on except for unique special applications. (Found under Conventional Personality, Advanced section, Emphasis section).
Suggested mic gain settings (found under Radio Configuration, Microphone section) are: 25.5 dB for the microphone gain 16.5 dB for the microphone gain in noisy environments 28.5 dB for the accessory microphone gain 35.0 dB for the microphone gain in emergency applications (enables hot-mic feature)
Full Compression and Full Expansion should only be used when all radios in the system have full compression and full expansion enabled (called X-Pand on 1225 Series radios)
Don't forget to complete the personality assignment to a zone!
Only Applicable to Portable Radios
If you are working in a high noise environment, you may want to disable Low Level Expansion. It is found under Conventional Personality, Advanced Section, listed under Expansion Type.
Only Applicable to Mobile Radios
Backlight: It should be manually set via the programmable button. Once the backlight is adjusted to the desired level, it will automatically remain at that intensity upon power up.
Todd
In an effort to assist you in the optimal programming of your customer's HT750, HT1250, HT1250LS, CDM750, CDM1250, CDM1550 and CDM1550LS radios, we have listed a few programming tips. The following suggestions will assist you in improving the functionality of our customer's radios. Please note that these programming tips may not be applicable to your particular customer's requirements:
Applicable to Portables and Mobile radios
If you are using Post PTT ID, you may want to decrease the DOS Auto Mute Duration to 25 ms (found under MDC System, DOS section). Also, if you are using Post PTT ID, you may want to turn off Tx pre-time, and set it to zero (found under MDC System, Advanced Section). This will help to make sure that the initial transmit is not interrupted.
De-emphasis and Pre-emphasis should always be on except for unique special applications. (Found under Conventional Personality, Advanced section, Emphasis section).
Suggested mic gain settings (found under Radio Configuration, Microphone section) are: 25.5 dB for the microphone gain 16.5 dB for the microphone gain in noisy environments 28.5 dB for the accessory microphone gain 35.0 dB for the microphone gain in emergency applications (enables hot-mic feature)
Full Compression and Full Expansion should only be used when all radios in the system have full compression and full expansion enabled (called X-Pand on 1225 Series radios)
Don't forget to complete the personality assignment to a zone!
Only Applicable to Portable Radios
If you are working in a high noise environment, you may want to disable Low Level Expansion. It is found under Conventional Personality, Advanced Section, listed under Expansion Type.
Only Applicable to Mobile Radios
Backlight: It should be manually set via the programmable button. Once the backlight is adjusted to the desired level, it will automatically remain at that intensity upon power up.