GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 84)

Parameter Modification PL1877A Microprocessor Radio Telephone Interconnect
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Clear Parameters – Parameters may be cleared by entering the command sequence: C OP1 OP2 ,
where OP1 is the starting parameter number and OP2 is the ending parameter number.
Display Parameters – Parameters may be displayed on the screen by entering the command sequence D
OP1 OP2 , where OP1 is the starting parameter number and OP2 is the ending parameter number.
View Parameters – Parameters may be displayed and opened for modification by entering the command
sequence No. where No. is the number of the parameter to be modified. After entering the No.
command, the parameter number chosen is displayed along with the current value of this parameter. To
change the value, enter the new value and then close the location by pressing
ENTER . The next
parameter is then displayed.
1. Press the ^J (CTRL and J entered simultaneously) or the DOWN arrow to display the previous
parameter.
2. Press the ^K (CTRL and K entered simultaneously) or the UP arrow to display the next parameter.
3. Press the ^U (CTRL and U entered simultaneously) or the PgUp button to display parameters in
increments of 10.
4. Press the ^D (CTRL and D entered simultaneously) or the PgDn button to display parameters in
decrements of 10.
Help Screen – To regain the help screen at any time during the routine, enter a ? (question mark) at
the prompt.
Exit – To exit the parameter modification routine and cease communication between the patch and the
video display terminal, enter the sequence ^X (CTRL and X pressed simultaneously).
N OTE : Generally, when entering parameter values larger than 9, the hexadecimal equivalent of the
parameter value must be entered (as opposed to the decimal value). For example, to program the overall
access timer to a duration of 59 minutes, 3B (the hexadecimal equivalent of 59) must be entered.
Parameter Modification via Modem
The modem feature allows operating parameters to be programmed, checked or modified remotely using
a computer equipped with a modem. The format is Bell 212A operating at 1200 baud. Modification of
parameters requires the computer modem software to work in a terminal emulation program, such as
VT100/ANISE, or other program that supports ASCII characters. This feature can be enabled or disabled
via parameter 22.