USER’S MANUAL__________________________________________________________________
154 _________________________________________________________________ M211322EN-D
= MFC mode is toggled on and off using the "=" key. A
warning will be printed if the Ps command is exited
while MFC is enabled, and you will be given a second
chance to reenable AFC.
| The AFC test submode is entered by typing the "|" key.
The following list of keybindings will be shown, and
will remain in effect until the test mode is exited by
typing "Q".
AFC Test Mode Subcommands
W Use WalkingOnes pattern
P Toggle Pin/Bit numbering
09,AO Toggle AFC Bits 024 (Pins 125)
2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7
6 5 4 3 2 1 0
O N M L K J I H G F E D C B A 9 8 7
6 5 4 3 2 1 0
The Ps command continues to run normally during the
AFC test mode. The customary AFC information will
be replaced with a hexadecimal readout of the present
25-bit value. Your live display may look something like:
Navg:3, FIR:1.33 usec (48 Taps), BW:1.000 MHz,
DCGain:ZERO
Freq:26.610 MHz, Pwr:64.6 dBm, AFCTest:0000207F (Bits)
Initially, a walking-ones bit pattern will be output in lieu
of the normal formatted AFC value. This test pattern
shifts a single "1" downward through the AFC word,
making a transition approximately every 4ms. It is
intended to help ring out and test the wiring for digital
AFC installations. The walking-ones test is handy as an
oscilloscope diagnostic, and you may return to it at any
time by typing "W".
Typing any of the characters "0" through "9" or "A"
through "O" will enter a new mode in which a static 25-
bit digital AFC pattern is controlled directly. Each key
toggles its corresponding bit, as summarized in the
keybindings printout. Any 25-bit pattern can be made
by toggling the appropriate bits (initially all zero) to
one. Within any particular pattern, it is also easy to
toggle a particular bit On/Off in order to verify its
function.
To Next Page
Loading...