6/25/99 HWW
REV B
10
MHZ
IN
TTL
CONV.
U15, U1
PLL
U2,U4
HIGH
TERM
LEVEL
DET.
U7, U8
12.288 MHz Monitor
(Front Panel)
DIVI-
DER
U9,
U11,
U12
256
128
64
192
96
CLOCK A
RS422
U14
4
5
CLOCK B
RS422
16
U14
17
AUTO
V+
V+
EXT
INT
MANUAL
ALARM
UP
U3
INT / EXT
CLOCK
PIN 2
PIN 3
VCXO INT.
FREQ. R20
12.288
MHZ VCXO
+5V
REG
VR3
-15 A
-15B
+15 A
+15B
-12
+12
+5
-12V
REG
VR1
+12V
REG
VR2
U10
U5
U6,
Q2
256
128
64
192
96
INT /EXT
CLOCK
(RED/
GREEN)
REF.
ALM
(RED/
GREEN)
PLL ALM
(RED)
ALARM
PLL LOCK
LEVEL
MANUAL
MANUAL OC
ALARM CC
MANUAL
ALM
(RED)
INT / EXT CLOCK
DS3 DS2 DS1
DS4
S1
JP4
JP5
JP1
JP2
FIGURE 3.1 2099-42 BLOCK DIAGRAM
2099-42 manual Rev. A
Page 11
10/27/2005
