M O O C l
M O D C O
M O D D2 \
D I G ;rD
Figure C-3. Interface Signals of the Source Module Connector
The codes indicated on the illustration above translate as follows:
Source module data line zero. Signals MOD DO
through MOD D3 are the mm source module
data bus lines (bi-directional).
Data line one.
Data line two.
Data line three.
Source module control line zero. Signals MOD
CO and MOD Cl are the control lines for the
read/write to and from the mm source module.
Control line one.
Source module clamp control (not used).
Source module sense. A 1mA current is injected
on this line by the mm source module to
indicate its presence. This signal always equals
o v .
L MOD RF OFF
Low = RF off. Source module RF is turned off.
EXT LVL RET
Source module external leveling return.
Source module external leveling input, from the
mm source module.
Internal 0.5V/GHz to the mm source module.
Power supply. Range is -14.25 to -15.9OV.
Power supply. Range is +14.25 to +16.4OV
Power supply. Range is i-7.75 to +8.25V.
Power supply. Range is t4.75 to t5.45V.
MOD ANLG GND
Source module analog ground.
ANLG GND RET
Analog ground return.
M O O ANLG GND
Operating and Programming Reference C-l 1