5.4 Functional Specifications
159
Zero Adjustment (0 ADJ)
Synchronized control
Key-lock (KEY LOCK)
Functions Degausses the current input unit DCCT and then zeroes out the voltage and current in-
put offset.
Compensation range Voltage: ±10% f.s. or less
Current direct input: ±10% f.s. or less
External current sensor input: ±10% f.s. or less
Compensation operation
time
Approx. 40 sec.
Method 1. Zero-adjustment is performed for current alone when the instrument is turned on
(zero-adjustment is not performed for voltage when the instrument is turned on).
2. Press the 0 ADJ key.
Constraints Zero-adjustment is performed for all channels, regardless of the wiring mode or current
input method. No measured values are displayed during zero-adjustment. Integration
cannot be started during zero-adjustment. Zero-adjustment cannot be performed during
integration. Zero-adjustment cannot be performed during display hold or maximum val-
ue or minimum value hold operation. Settings cannot be changed during zero-adjust-
ment. After zero-adjustment completes, the maximum value, minimum value, and
average value are cleared, and associated processing is restarted.
Functions The timing of calculations; display updates; data updates; integration start, stop, and re-
set events; display hold operation; key lock operation; and zero-adjustment operation
for the slave PW3336/PW3337 is synchronized with the master PW3336/PW3337. An
error will be displayed if unable to perform synchronized control (and the display will
continue until the error is cleared).
Terminal BNC terminal × 1 (non-isolated)
Terminal name EXT SYNC
I/O settings OFF/ IN/ OUT
OFF Synchronized control function off (signals input to the EXT SYNC terminal are ig-
nored)
IN: The EXT SYNC terminal is set to input, and a dedicated synchronization signal can
be input (slave). The SYNC OUT lamp will flash when a synchronization signal is
received.
OUT:The EXT SYNC terminal is set to output, and a dedicated synchronization signal
can be output (master). The SYNC OUT lamp will light up when the terminal is set
to OUT.
I/O signal levels High level: +5 V; low level: 0 V (high-speed CMOS level)
Number of units for which
synchronized control can be
performed
1 master, 7 slaves (total of 8 units)
Functions Disables key input in the measurement state, except for the SHIFT key and KEYLOCK
key.
Operation Pressing the SHIFT key and then the KEYLOCK key enables the key lock function
(causing the KEYLOCK lamp to light up).
Constraints The key lock state will be canceled when the instrument is placed in the RMT state by
communications.
Backup Yes (when the instrument is turned back on, it will still be in the key lock state)
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