Vertex Standard VX-1210 Service Manual page 7

Description of TOGGLE Switch Functions
SELCALL Function
Enables/disables the (optional) Selcall Unit which allow pag-
ing and selective calling, if installed. Details for the SELCALL
feature are described on next page.
High/Low Power
Selects the transmitter power output level between "High" or
"Low."
You will get much longer battery life by switching to Low
power operation.
Noise Blanker on/off
Enables/disables the IF Noise Blanker. When the Noise
Blanker is activated, it will reduce many different types of
manmade impulse noise (but not atmospherics).
Tuner on/off
Enables/disables the Automatic Antenna Tuner.
Antenna Tuning
Press and hold the assigned TOGGLE switch into the "ON"
position for 1/2 second to initiate antenna tuning. The "WAIT"
indicator will appear on the display during tuning, and will
disappear when a match has been achieved.
If the tuning is successful, the "TUNE OK" indication will
appear on the display, and the radio will emit a "beep."
Encryption on/off
Enables/disables the (optional) voice encryption unit.
When the voice encryption unit is enabled, the clarifier is
disabled.
Remember that disabling the encryption will mean that your
transmission are no longer secure. Return to the encrypted
mode as soon as possible, and do not discuss any critical or
confidential information while in the non-encrypted mode of
operation.
LAMP on/off
This feature operates differently, depending on the switch type
assigned to this function.
Toggle Switch Type (Switch "A")
Move the assigned TOGGLE switch into the "ON" position
to illuminate the LCD lamp continuously. To disable the LCD
lamp, return the assigned TOGGLE switch to the "OFF"
position.
Momentary Switch Type (Switch "B" or "C")
Press this switch momentarily, (I) to illuminate the LCD lamp
for three seconds, after which the lamp will automatically
shut off, or (II) to illuminate the LCD lamp until you press
this switch once more (no time limit). These functions are
determined via programming by your Vertex Standard Dealer.
A O
DVANCED PERATION
LCD Display (Tag/Frequency)
Selects the channel frequency display format between (I) the
channel's frequency, or (II) the channel's Alpha/Numeric la-
bel (name).
HAIL Function
Turn on the assigned TOGGLE switch to activate the "HAIL"
feature which emits a loud "Alarm" sound. Use this feature if
you want a quick way of alerting other group members as to
a dangerous situation.
VFO/MR Select
Selects the frequency control technique between (I) the "VFO"
or (II) the "Memory System."
r Press the assigned TOGGLE switch momentarily to
toggle frequency control between the VFO and Memory
Systems.
r Press and hold the assigned TOGGLE switch in the "ON"
position for 1/2 second to copy the memory channel data
to the VFO. You may then rotate the SEL knob to tune
the frequency manually.
TELCALL Function
Enables/disables the TELCALL Function (dialing for
Autopatch,) if the optional SELCALL Unit is installed. De-
tails for the TELCALL function are described on page 8.
Squelch on/off
Turn the assigned TOGGLE switch to the "upper" position
to keep the receiver quiet until a signal is received. Turn the
assigned TOGGLE switch to the "lower" position to "open"
the RF squelch manually, allowing you to listen for very weak
signals.
To Adjust the Squelch threshold level:
1. Rotate the SEL knob to select a clear channel (where no
signals are present).
2. Turn the TOGGLE switch (assigned to the "Squelch on/
off" feature) to the "upper" position.
3. Press and hold in the SEL knob for 5 seconds to enable
modification of the squelch threshold level.
4. Rotate the SEL knob to the point where the background
noise just disappears; this is point of maximum sensitiv-
ity to weak signals.
5. Press the SEL knob momentarily to save the new setting
and exit to normal operation.
Speaker Select
Switches the audio output between the internal speaker or
the optional MH-50
Operating Manual Reprint
Speaker/Microphone.
B7A
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