Specifications
D1256/D1257
Installation
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Installation
Instructions
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D1256/D1257
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Further customization may be required if the D1256 is located in an unsecured area, or if D1255
Command Centers are installed in the system. The factory loaded program for the D9124 makes
these functions available without requiring a passcode entry.
If for example, the D1256 that is connected to a D7212B or D9112B1 is located in a secure area, but
the D1255 Command Centers are also installed, you may want to restrict command center functions
by requiring a passcode in Cmd Center Function.
Note: The following paragraph applies only to the D7212B, D9112B and D9124 (that uses a D9112LTB)
Control/Communicators. See Note 2 for information regarding the D7212, D7412, D9112, D9412, and the
D9124 (that uses a D9112LTB-EX).
Once restricted, a passcode with an appropriate authority level must be entered in Custom Key Strokes along
with the key strokes to make the function keys operational.
Finally, in the Menu/Function List, you would show the function numbers for the Custom Functions controlling
the function keys ONLY at D1256 addresses in secured areas.
Function numbers for standard User Interface command center functions can be programmed in the Menu
Function List for D1256 and D1255 addresses. Remember to enable functions only as appropriate for the
command center at the address. The D1256 does not have numeric keys, so it can not be used to access
functions that require a passcode.
Appendix A: Specifications
Power: Nominal 12 VDC supplied by the Control/Communicator
Current Required: Idle: 104 mA
Maximum: 206 mA, with annunciator lighted and warning tone on.
Wiring: Four-wire supplies Data In, Data Out, + 12VDC, and Common.
Maximum data loop resistance is 10
Ω.
Dimensions: Base: 4.6 x 8.2" (11.6 x 20.7 cm) (HxW)
Cover: 4.3 x 8.12 x 0.816" (10.9 x 20.6 x 2.1 cm) (HxWxD)
Color: Fire engine red
Display: 16 character vacuum fluorescent display. Each character is a 14-
segment unit. Soft blue color.
Operating Temperature: 32° to 122°F (0° to 50°C)
Relative Humidity: 5 to 85% @ 86°F (30°C)










