Vertex Standard VX-177 manual Dtmf Pager Operation Requires Optional FTD-7

DTMF PAGER OPERATION (REQUIRES OPTIONAL FTD-7)

The VX-177allows you to utilize a DTMF (Dual-Tone, Multi-Frequency) tone encoder/ decoder, with a dedicated microprocessor providing paging and selective calling features now that you've installed the optional FTD-7DTMF Paging Unit. This capability allows you to make a call to a specific station (Paging), and to receive calls of your choice di- rected only to you (Code Squelch).

The paging and code squelch systems use 3-digit numeric codes (000 - 999) which are stored in the DTMF Pager Memories. Basically, your receiver remains silent until it re- ceives the 3-digit DTMF pager code that matches those stored in the DTMF Pager Memory. The squelch then opens so the caller is heard, and the LCD displays the 3-digit DTMF pager code which was received. Also, the paging ringer immediately sounds, if the Bell function is activated. When you close the PTT switch to transmit, the 3-digit DTMF pager code which is stored in the last selected DTMF Pager Memory register will be transmitted automatically.

On the paged radio, the squelch will close automatically five seconds after the incoming page ends (you may now resume DTMF Pager operation).

Storing the 3-digit code for the DTMF Pager Operation

1. Press the [F] key, then press the [0(SET)] key, to enter the Set mode.

2. Rotate the DIAL knob to select Set Mode Item 56: PAG.COD.

3. Press the [F] key momentarily to enable adjustment of this Set Mode Item.

4. Rotate the DIAL knob to select the DTMF Pager Memory regis-

ter into which you wish to store the access code.

5. Press the [F] key momentarily. The first digit will blink. 6. Rotate the DIAL knob to select the first digit of the 3-digit DTMF

pager code. The “A” and “D” keys are “wild cards.”

7. Press the [F] key momentarily to accept the first digit and move to the second digit of the 3-digit DTMF pager code.

8. Repeat the previous steps until you have completed the 3-digit

DTMF pager code. 9. Press the [REV(HOME)] key to toggle the decoder “on” and

“off.” When the decoder is set to “off,” the “- -” notation appears between the DTMF pager memory register number and the 3-

digit DTMF pager code; for example, “P2- -123.” The 3-digit DTMF pager code which does not have the “- -” no- tation is used for encode only.

10. Press the PTT switch to save the new settings and exit to normal operation.

VX-177 OPERATING MANUAL 57