1656 & 1657 Battery Element Tester Owner’s Manual
STS Instruments Page 42 of 88
6 Options
The following options can be ordered with the 1656 or 1657 Battery Element Testers. The
operation of these options is covered in this section.
6.1 Remote Test Input Option TT1652
The TT1652 Test Input Trigger Mode changes the mode of operation of the Test Trigger input on
the 1656-PLC and 1657-PLC battery element testers to operate like the previous generation
1652 models.
The following features are provided by this option:
• Changes Test Trigger Input on PLC interface from Edge Triggered to Level Triggered
• Test Mode is engaged as long as Test input is low or shorted to digital common
This option allows 1656 and 1657 Battery Element Testers with PLC to interface to battery
production lines that were set up for previous generation 1652/070 BET model AC Input and
Output Controls.
6.1.1 TEST and RESET Inputs Modes
Without this option, the 1656/1657 uses a TEST input to remotely trigger a programmed test
duration and a RESET input to abort if a continuous test duration is programmed.
By adding this option, the remote TEST Trigger input becomes level triggered instead of edge
triggered as illustrated in the diagram below. The normal mode of operation using TEST and
RESET inputs is shown on the left. The operation with the TT1652 option installed is on the right.
STANDARD
TEST INPUT
-TT1652 OPTION
TEST INPUT
TEST TRIGGERED
TEST TRIGGERED
TEST STOPPED
TEST STOPPED
TEST DURATION = PROGRAMMED
TEST TIME INTERVAL x COUNTER
NOTE: PROGRAMMED TEST TIME INTERVAL &
COUNTER SETTNG IGNORED
STANDARD
TEST INPUT
-TT1652 OPTION
TEST INPUT
TEST TRIGGERED
TEST TRIGGERED
TEST STOPPED
TEST DURATION = CONTINUOUS NOTE: PROGRAMMED TEST TIME INTERVAL &
COUNTER SETTNG IGNORED
RESET INPUT
Figure 6-1: Effect of TT1652 Option on Test Input control vs normal remote operation
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