Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
4.14.3 SETTING THE HEAD MODE
There are three available HEAD settings: CMI, 75 and 120. The CMI and the 75 Ohm option are
not used in the M-DACS. To display and change the current HEAD setting, proceed as follows:
1. Use the GROUP switch to display the INTF group.
2. Press down on the SET/NEXT switch to display HEAD.
3. Press up once on the SET/NEXT switch. The display now shows CMI, which is the first of
three available HEAD settings.
4. Press down on the SET/NEXT switch additional times to see the other available HEAD
settings.
The other available HEAD settings are 75, and 120.
Note that these numbers are equivalent to line impedance in E1 mode. In T1 mode,
either of these settings yields 100 ohms impedance.
The green part of the ON/OFF indicator lights when the current HEAD setting is
being displayed. If any other HEAD setting is displayed, the red part of the
ON/OFF indicator lights.
5. To change the current HEAD setting, advance the display to the desired setting and press up
twice on the SET/NEXT switch.
After the first press, the green part of the ON/OFF indicator flashes, meaning that
a change is about to be made. After the second press, the green part lights
continuously, showing that the HEAD setting has been changed to the displayed
value.
The fourth function in the HEAD subgroup is exit. When the exit function is displayed, you can press
up on the SET/NEXT switch to leave the HEAD subgroup and display TLBO, the next INTF function.
To exit the INTF group entirely, press up or down on the GROUP switch.
M-DACS-T1 RFL Electronics Inc.
July 18, 2008 4-24 (973) 334-3100
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