Section 3: Operation
Instruction Manual 8144-DD/075020
Page 3-5
CLOCK OUTPUTS:
There are three connectors with four clock outputs per connector. Each clock
output consists of a Tip, Ring, and Ground triad.
Pin # Function
1
Tip Output #1, 5, 9
2
Ring Output #1, 5, 9
3 Ground
4
Tip Output #2, 6, 10
5
Ring Output #2, 6, 10
6 Ground
7
Tip Output #3, 7, 11
8
Ring Output #3, 7, 11
9 Ground
10
Tip Output #4, 8, 12
11
Ring Output #4, 8, 12
12 Ground
TABLE 3-1 CLOCK OUTPUT CONNECTOR PINS
CLKS IN:
The reference clocks are connected here. There are Tip, Ring, and Ground
triads for each input. The A reference input is connected at pins 1, 2, and 3;
the B reference is connected at pins 4, 5, and 6.
ALM INPUTS:
The alarm inputs are connected here. There are two + (plus), - (minus), ground
triads for each alarm. The A alarm is on pins 1, 2, and 3, and the B alarm is on
pins 4, 5, and 6. The alarm inputs can be either RS-422/485 levels or contact
closures. A contact closure between pins 1 and 3 activates the A alarm. A
contact closure between pins 4 and 6 activates the B alarm. Making the + (plus)
more negative than the - (minus) input activates the alarm.
The alarm termination headers must be in their high-impedance (B-C) position to
use contact closures for alarm inputs.
