Instruction manual

3-17
Table 3-2
Jumper/Switch/Variable Resistor Functions
Jumpers Name Description
W1 DV Record Jumper in place – DV is in the Playback only mode.
Jumper removed – DV is in the Record and Playback
mode.
W2 Strobe Synchronization Defeat Jumper in place – Wheelock Strobe Sync activated.
Jumper removed – Strobe Synchronization defeated.
Allows for Strobe Sync by a master unit and pass
through on RET connection.
W3 Internal Tone Select Jumper in place – Code 3 Tone
Jumper removed – Slow Whoop Tone
W4 ----------------- Not Used - Jumper shall remain in place .
W5 ----------------- For future use.
W6 Ground Fault Disable Jumper in place – Ground Fault Circuit Enabled.
Jumper removed – Ground Fault Circuit Disabled.
W7 Shorted Audio Output Non
Emergency Defeat
Jumper in place – Telephone Page, BGM, NR
disabled.
Jumper removed – Telephone Page, BGM, NR
enabled
W8 ----------------- For future use.
J2 ----------------- For future use.
J4 Audio Output Select Selects 25V or 70.7V for Audio Output (AUDIO OUT)
by moving two jumpers.
Switches Name Description
SW1 Trouble Acknowledge Spring loaded. When depressed, silences the internal
trouble sounder.
SW2 DV/Strobe Select, Sync/Non-Sync
Select
Four position DIP Switch. Positions 1, 2, and 3 allow
strobe activation when IN1, IN2, and/or IN3 are
initiated respectively.
Position 4 controls Wheelock Sync (OFF) or Non-Sync
(ON) mode for Switch SW2 only.
SW3 Digital Voice Selector Switch Four position DIP Switch. Positions 1, 2, and 3 allow
playback of the three messages when Jumper W1 is in
place.
Position 4 controls record mode when Jumper W1 is
removed.
SW4 ----------------- For future use.
Variable
Resistors
Name Description
R89 (TEL) Telephone Page Volume Control Adjusts Telephone Page Volume
R128 (BGM)
Background Music Volume
Control
Adjusts Background Music Volume
R126 (TONE) Tone Control Treble Adjusts Audio Amplifier Tone (Treble)
R129 (TONE) Tone Control Bass Adjusts Audio Amplifier Tone (Bass)
R158 (AUX) For future use.
R193 (DV) Digital Voice Volume Control Adjusts Digital Voice Output Volume