Service Manual Part 1

  +8.
  
+80 *&$#&##
The options connectors, S13 and S14, are located on the top side of the T2000 logic PCBs,
and are provided for use with plug-on accessory PCBs.
The following tables describe the signals available on these connectors, and also on S15
(T2010 & T2015 logic PCB).
3 " .)(2 (()2   +( +.1)(2
3 " .)(2 (()2  +..4 :) +.1)(2
*
       Ω        Ω 
  !
Connection
(to/from)
Pin
No.
Used
for
Level for 1kHz
AF 60% FM
Z
1
Ω
Z
0
Ω
Min.
Z
L
DC
Level
Slope
dB/8
LF
-3dB
Hz
HF
-3dB
Hz
DET-AF-OUT
(from detector via
3kHz LPF)
S13-1 CTCSS
data, DCS,
Selcall
400mVp-p <1k 1k 3.3V flat 10 3.4k
ALC-IN
(to compressor)
S13-2 0.2Vp-p 2.2k 0V +6 0.25k 3.4k
RX-LINE-OUT
(de-emphasised
receiver audio)
S13-3 to accessory
line interface
0.4Vp-p 100 10k 3.3V -6 0.23k
or
0.35k
3.4k
TX-LINE-OUT
(from ALC)
S13-4 to accessory 1.2Vp-p <1k 1k 3.3V flat 70 33k
RX-LINE-IN
(to squelch
element)
S13-5 from
accessory
0.4Vp-p 5k
*
3.3V flat 0.18k 20k
TX-LINE-IN
(to pre-emphasis)
S13-6 from
accessory
line interface
1.2Vp-p
5k
*
3.3V +6V 0.25k 3k
RX-GTD-AF
(Rx Audio from
after squelch)
S13-7 line interface 0.4Vp-p 10k 0.2M 3.3V flat 0.23k
or
0.35k
3.4k
TX-SIG-IN
(to limiter)
S13-8 data Selcall 2.5Vp-p 470k 3.3V flat 4 3.4k
RX-BEEP
(to AF PA with min.
volume stop)
S13-9 sidetone 0.5Vp-p 470k AC flat 0.18k 20k
TX-LF-SIG
(to LPF)
S13-10 CTCSS, DCS 5.0Vp-p for
12%
deviation
2.2k 3.3V flat 4 3.4k
OPTIONS-GND
(connected to
ground on RF PCB)
S13-11
Connection
(to/from)
Pin No. Function Available Current
+13.8V-UNSW S13-12 - emergency: to bypass the on/
off switch
0.5A
+13.8V S14-1 - supply to options with own
regulators
200mA (remote loom resist-
ance = 0.43
Ω
/loop meter)
+5V S14-2 supply to options 150mA