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the “Simple Network Time Protocol” protocol) or “RTC” (Real Time

Clock).

WARNING: Manually changing the RTC’s time/date via the

“Administration: Date and Time” window should not be attempted

between the hours of 12:00 AM and 2:00 AM on DST transition days

(two per year). Doing so could result in a missed “spring ahead” or

“fall behind” event. Set the date and time before midnight on a DST

transition day or after 2:00 AM on a DST transition day.

If the date is wrong following a power failure, and the system is

relying on the internal real time clock (RTC) and not a network-based

time server, it is likely that the RTC’s battery is depleted. Replace the

battery (see battery replacement, page 14). Reassemble the control

module and then plug it back into the wall outlet. Reset the Real

Time Clock.

Setting Equalizers and Emitter Fault Detection

A special login password is required to gain access to the ENFD

screens. Contact Cambridge Sound Management to obtain the

password(s) for your control module(s). You will need to provide

the Mac Address of each control module. See “Administration:

Networking and Security” for the MAC Address or it can be seen on

the front panel.

Below are the screens for emitter fault detection and equalizer

settings when logged in with the second level password.

Equalizer Update

After logging in with the second level password, the operations

sections will have a block that includes the equalizer settings. The

Masking and Audio equalizers are congured by the factory and

should not need to be modied in most installations. However,

if desired, the equalizers may be used to adjust the system to a

different masking, paging, or music spectrum.

You may specify the gain for a tap in its corresponding box. All values

are measured in dB and the range is +/- 12 dB, in whole number

increments. To specify a negative gain, precede the number by a

minus sign (for example, -2). Once you have specied all of the taps

of interest, press “Submit.” The values will be changed and saved,

and the equalizer will redraw to provide a visual representation of

your settings.

When an equalizer’s settings are modied, the control module

calculates and reports the impact the new settings have on speech

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CAMBRIDGE QT Guida di Installazione Pagina 30