Guardian Telecom Inc.
Installation and Operation
Model PSCU
Page 6
Component Function
J15
(Dynamic) Microphone Input
R31
Potentiometer for high frequency cutoff adjustment
R22
Potentiometer for low frequency cutoff adjustment
J21
Microphone output signal
J20
Receiver indicator output (LED can be mounted)
J3
Page/Talk output indicator (when the Page/Talk button is pressed these contacts
J3-1; J3-2 are shorted)
J1
24V AC or DC input (pins 1 & 2)
F1
0.5 Amp fuse (fast blow)
S1
#3 alarm switch (contacts 1 - 5 of J5)
S2
#2 alarm switch (contacts 2 - 5 of J5)
S3
#1 alarm switch (contacts 3 - 5 of J5)
S4
Reset alarm switch (contacts 4 - 5 of J5)
J14
(Amplified) Page input signal
R28
Potentiometer for speaker volume adjust (on the PCB)
J19
Header for panel mount volume adjust speaker (R28 has to be removed)
J13 Speaker
output
J4
Mute speaker (1 - 2 mute on, 2 - 3 mute off)
J2
Phone line 1 in (header) [optional usage]
J18
Phone line 1 out (RJ11) [optional usage]
J16
Phone line 2 in (header) [optional usage]
J17
Phone line 2 out (RJ11) [optional usage]
Table 1 - Circuit Board Connections
