4. Design Integration Considerations
Connector J1 Signals
Pin#
Signal Name
Type
Signal Function
1, 2
PWR In
PWR
+ Power input +15 to +32 Vdc - all power pins must be
connected.
3
D_OUT
Output UART data out at ACMOS logic levels.
4, 5
GND
GND
- Power & signal return - all grounds must be connected.
6
NC
-
Not connected. Pin shall be left floating
7
LOCK
Output If low, indicates Rb oscillator is locked.
8
GND
GND
- Power & signal return - all grounds must be connected.
9
NC
-
Not connected.Pin shall be left floating
10
DIN
Input
Input UART data in at ACMOS logic levels.
11
FREQ CTRL (Optional) Analog
Analog Frequency control - analog input between 0 - 5
Vdc.
12
GND
GND
- Power & signal return - all grounds must be connected.
13
NC
-
Not connected. Pin shall be left floating
14
SERVICE
Output
Indicates unit is nearing limits of frequency control and
that Service is required within several months.
15
GND
GND
- Power & signal return - all grounds must be connected.
Connector J2 Signal
10 MHz SINE OUT
(SMA MALE, MIL-PRF-39012)
8200 RF Outputs
RF Output Impedance versus Frequency
The active RF output impedance for the 8200 is a nominal 50 Ω at 10 MHz, but is a widely varying
impedance at other frequencies. You must take this into consideration if the 8200 rf output is driving a
non-buffered filter. Note that the 8200 is specified as delivering 0.7 Vrms (typical) into a 50 Ω resist-
ance load. Loads that present complex impedance or resonances affect signal amplitude. The 8200
can drive a properly terminated transmission line of 50 Ω characteristic impedance.
Note:
390 pf capacitor from the 10 MHz sine output to the sine return is required within four inches of
the output connector. It can be located across the 50 Ω terminator.
If the sine output port is disabled, its characteristic impedance remains the same.
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