Table 3-6: Db15 Auxiliary I/O Connector; Table 3-7: Bnc Connectors - California Instruments 2253i User Manual

User Manual
3.7.4 Auxiliary I/O Connector – J18
A high density D style, 15-pin I/O connector is located on the rear panel. Table 3-6 shows connections
by pin number.
Pin
1
2
3
4
5
6
7
8
9
10
11-15
3.7.5 BNC Connectors (-LKM / -LKS options) – J19/J20
BNC connectors
optional -LKM and -LKS clock and lock mode. This option is available on iX models. Refer to section
3.9 for more details.
BNC
CLOCK
LOCK
California Instruments
Signal
ACOM
RPVA
RPF
/INH
TRIG IN
FSTB
D FI
DCO M
EXTB
EXTC
Reserved

Table 3-6: DB15 Auxiliary I/O Connector

. F unc tions a re called out on
Ref. Descriptio n
J19 Clock Option (TTL output on Master / TTL input on Auxiliary)
J20 Lock Option (T

Table 3-7: BNC Connectors

Description
Analog Common
Remote Programming Voltage all phases (Option -
RPV) or Ext Input phase A (Option –EXT)
Remote Programming Frequency (Option –RPF)
Remote Inhibit. (TTL input)
Trigger Input (TTL input) If external sync option
(–EXS) is installed, this input is reassigned as Ext
Sync.
Function Strobe or Trigger Output (TTL output)
Discrete Fault Indicator output. Isolated Open
Collector. Can be used to signal external devices
when a fault condition is detected.
Digital Com mon
External input for pha se B (Option -EXT).
External input for phase C (Option -EXT).
Do not use.
rear pa nel decal. Table 3-7 shows connections for the
TL output on Master / TTL input on Auxiliary)
2253i / 2253iX
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