LDF, AN/UXC-7/7A. This is a tactical facsimile that electronically transmits data from one LDF to another. The LDF is ruggedized and has a universal mount which allows installation in tactical vehicles. It transfers data over radio, common-user telephone systems, or digital equipment. The LDF connects to the MSE network through the data ports on DSVTs and DNVTs. The LDF can transmit maps, photographs, line drawings, and printed or handwritten messages. Because it uses carbon paper, no special toner is needed.
The LDF has two separate modes of operation: Mode A and Mode B. The appropriate transmission medium (CNR, MSE, or TRI-TAC) must be considered when determining the mode of operation.
In Mode A, images are scanned and transmitted from one machine to another machine that receives and prints as the transmitted information arrives. This mode requires more transmission time than Mode B.
When Mode B is selected, the LDF becomes much more versatile. Each LDF has an image memory, a transmit memory, a receive memory, and supporting electronic functions which are now activated. Pressing the MEMORY LOAD switch causes processed scanner data to be entered into the image memory from where it can then be appropriately formatted for rapid transmission (called burst operation) from the transmit memory into the receiving LDF's receive memory. The data can now be printed out at the convenience of the receiving operator. An important advantage of Mode B operation is that significantly less time is required on the communications link.
The AN/UXC-7/7A can store images in memory and reproduce or send them at a later time. See Figures 3-35, 3-36, 3-37, and 3-38. Table 3-7 gives an LDF troubleshooting chart.
Figure 3-35. LDF, AN/UXC-7/7A.
Technical Features.
- Input power voltage: +22 to +32 VDC; 115/230
VAC at 47 to 470 Hz.
- Power consumption
- Standby: 50 watts.
- Operating: 100 watts.
- Weight: 54 pounds.
- Transmission Speed:
Mode A - Analog 2 to 6 minutes for an 11- inch page.
Mode B - Digital 7 to 15 seconds for an 11- inch page.
Figure 3-36. Phone line interface to LDF.
Continue with Chapter 3
Table of Contents
Index
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