Pressing ESC at the top of

the tree has no effect.

9
Installation ~ LCD Programming
Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
appropriate menu. Then press Enter. To descend a menu level (go deeper into the
tree), press Enter. To ascend a menu level (go back toward the top of the tree),
press ESC.
The Meter button will also access the Meter tree directly. The menu trees are
structured in levels, such that the first level (top of the tree) branches into multiple
subcategories (see Figure 2.7). These branches typically end when an adjustable
parameter or viewable value is reached.
Adjusting a value
To adjust a parameter, first verify that it is flashing. If the parameter is not flashing,
it cannot be adjusted until you press Enter. If the parameter is flashing, adjust the
value with the Up and Down buttons. As the value is adjusted, the parameter is
updated immediately. For example, if you adjust input gain, you should be able to
hear the difference as it changes. To store the new value, press Enter. To discard the
change and revert back to the old value, press ESC. In general, while adjusting
parameters, numerical values do not wrap around when the end is reached. However,
parameters that toggle between two values (or are a list of values) will wrap around.
When adjusting a parameter, press and hold the Up or Down button for more than
two seconds to scroll through the values at a faster rate.
Meter+12+8+40-4-10-30EscEnter
Figure 2.5. Front Panel Buttons
✍

GT1524 Parameters Worksheet

Program Parameter Selection Range
Lock Panel On, Off
Set Passcode An
y
5 Front Panel Ke
y
s
(
Enter
)
RS232 Baud Rate 9.6, 19.2, 38.4 kbps
RS232 Flow Control On, Off
Telco Auto Answer On, Off
Telco Auto Disconnect Off, Loop Drop, Call Pro
g
, LD + CP
Telco Ring Indication Off, 1, 2, 3, 4
Unit ID No. Factory Programmed
*Timeout 0 - 15
(
10
)
*Telco Adapt Mode Auto, Burst
*Hook Duration 50 ms, 500 ms
*Receive Reduction On, Off
Program Parameter Selection Range
Default Meter Any Input/Output (Spkr/Line Out)
Mic/Line In Aux In 4 Wire In From Telco
Program Parameter Selection Range
Gain Adjust -20dB to 20dB
(
0
)
Mic/Line Input Mic 55dB, Mic 25 dB, Line
Mute On, Off
Phantom Power On, Off
AGC On, Off
High-Pass Filter On, Off
Echo Cancellation On, Off
NLP Adjust Off, Soft, Medium, Aggressive
Spkr/Line Out Aux Out 4 Wire Out To Telco
Program Parameter Selection Range
Gain Adjust -20dB to 20dB
(
0
)
Mute On, Off
Aux Out Mix (Mic/Line In) On, Off
Aux Out Mix (Aux In) On, Off
* Set up only by serial port
Output ChannelSystem-Wide ParametersInput ChannelMeter
Figure 2.6. Parameters Worksheet