Specifications

24 Appendix B. Connector pinouts
Laser
Thermistor + Thermistor -
Peltier + Peltier -
Stack Piezo + Stack Piezo - Disc Piezo +
Disc Piezo - Laser -
Laser + Relay -
Relay +
LED
R5 499R
RF Laser Current Input
Female SMA
Pair 2
1
Pair 2
2
P2/4 Shield
3
Pair 4
4
Pair 4
5
Single 1
6
Single 2
7
Single 3
8
Pair 1
9
Pair 1
10
P1/3 Shield
11
Pair 3
12
Pair 3
13
Single 5
14
Single 6
15
Single 4
16
Pair 0
17
Pair 0
18
P0/5 Shield
19
Pair 5
20
Pair 5
21
P6 Shield
22
Pair 6
23
Pair 6
24
Mount Hole
D1
1
2
3
HD1
R3 10k0
R4 43R
DNI
D2
Active sensor +
Active sensor -
Sig
Gnd
P1 SMA - 5P
Laser Interlock
Lid posiiton interlock
Voltage Free contact
that closes when box
in posiiton
1
2
HD4
Flying leads
R2
4k99
C4
250V 10nF
Sig
Gnd
P3 SMA - 5P
htdiwdnab hgih FR
edoid ot noitcennoc
L1
100uH
1
2 7
8
NC
U1A
3
4 5
6
NC
U1B
R1
390R
P5v
P5v
P5v
Chassis Earth
Shield Shield Shield
Shield
P5v
Gnd
Figure B.2: CEL headboardschematic.TheRF modulationlow-passcutoff
frequency is determined by C4 and the diode impedance (∼ 50Ω).