Atek 10002iX, User Manual, Page: 37 / 259

User Manual California Instruments
3.6Connectors - Rear Panel
A number of connectors are located along the top rear covers. These connectors are in a
recessed area to protect them from shipment damage.
3.6.1System Interface, Clock and Lock Connectors
WARNING: The system interface connector and Clock and Lock connectors may
be at hazardous voltages. These connections may not be used in table top
applications. In table top applications the safety cover must be in place. These
connections may only be used when the equipment is enclosed in a rack, only within
one rack, only with Teseq supplied cables, and only between Teseq equipment.
J21 and J20 are the Clock and Lock connectors and are used to synchronize and control the
phase shift between the three outputs when 3 units are operating as a three-phase system with
the NSG 1007-15-208 - LK option.
The System Interface connector, J22, is used to connect the slave power sources to the Master
power source (the one with the controller) in multiple box systems. The connector is also used
for the external sync input, external modulation input and trigger output.
Table 3-2: System Interface Connector (J22)
J22 Description
1 Analog Common: analog signal common
2 MR B: Phase B master signal
3 Analog Common
4 CS B: Phase B current sum
5 CT Common: Current transformer common
6 OSC B: Phase B oscillator output
7 Analog Common
8 CL B: Phase B current limit reference
9 EXT MOD: External modulation input. A 10 volt input will modulate the output 10%.
Original versions of iX power sources required a 100 volt input to modulate the output by
10%. If you experience problems using the external modulation input, contact Teseq
customer service.
10 : A logic low output to indicate an over temperature condition.
11 : Output relay state: Logic HI = open, LOW = closed.
12 FLT C: Phase C current limit fault control
13 FLT A: Phase A current limit fault control
14 F STB LO: Function Strobe / Trigger output Low signal. This is the emitter lead of an
optically isolated NPN transistor. The internal power controller turns this transistor on to
indicate a change of programmed values. See section 3.6.7 for details.
15 EX SYNC LO: External Sync Low signal. This is the ground return for the TTL external
sync input. It connects to the cathode of an LED at the input of an opto coupler. Refer to
J22-32.
NSG 1007 Series II 37