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VOX
You
cannot
use VOX on voice transmissions with the
TVSU-1B
while the receiving antennas are
being used, the PTT keying line must be used. VOX operation activates the rig internally,
eliminating the possibility of a sequenced turn-on by the
TVSU-1B
. The same applies to using a
hand mike unless you operate the
TVSU-1B
from the microphone PTT wire, and use the
sequencer’s PTT output to operate the radio PTT. The normal PTT on the radio microphone
connection cannot be used.
Time Delay Settings
Remove power from the unit before changing switch positions. To access the
delay adjustment switches, remove the two screws on each side of the
TVSU-1B
cover. The delay adjustments are grouped in a series of four DIP switches per
function. They are labeled on the circuit board as shown in
Figure 3
. Pushing the
rocker style switch so the flat part is oriented to the "OPEN" side of the switch
equates to a "1" in
Table 1
and will add delay time.
Factory default for all DIP Switches = All switches closed, which is all zeros.
All of the rocker switches are pressed down toward the numbers.
PTT:
Closure Delay from PTT IN to PTT OUT. Delay repeats on Key Up
CW:
Key Down Delay from CW IN to CW OUT. Delay repeats on Key Up
AUX:
Keying Delay of AUX OUT after PTT or CW Closure
PREA:
Pre Amp Power - OUT (Hang-Time) Delays power on after CW or PTT Key Up
LIN:
T/R AMP - Off (Hang-Time) Delays un-keying of amplifier after CW or PTT Key Up
TONE:
Adjusts CW Side-tone Frequency
Refer to
Figure 4
which diagrams the keying sequences and the delays that are available.
When Switch is
pressed toward
Open = One
When Switch is
pressed toward
a Number = Zero
Figure 3 - Circuit Board DIP Switch Labeling
