12
ISOMET
Signal
Connector
Spec
-Enable
SMA
Internal pull up to 3v3
Voltage free contact recommended
Open = Off, Closed =ON
CTRL
9-way D-type
Reserved for future designs
CLK
SMA
LVTTL, 3v3 max
TRG
SMA
LVTTL, 3v3 max
USB
B-type
II
INT
7-way Binder
I2C (cable supplied)
Vdc
Screw terminal
24Vdc , 40A
LED indicators, 2 off:
1: The bulkhead dual colour LED fitted above RF output J2
RED indicates:
24Vdc is ON, but one or more of the following conditions exist:
Interlock failure (over temp)
-ENABLE signal inactive (open circuit)
RF_GATE not enabled in S/W
YELLOW indicates amplifier enabled and RF outputs live
2: LED stack on the iMS4-L interface PCB
GREEN (or RED) LED will beat at 1Hz indicating that the interface control circuitry has
initialized correctly
Figure 3: Signal listing
