6243/44 DC Voltage Current Source/Monitor Operation Manual
6. COMPATIBILITY WITH TR6143
6-1
6. COMPATIBILITY WITH TR6143
This chapter describes compatibility with the earlier model TR6143.
The 6243 and 6244 feature the Original Mode and the TR6143 Mode for compatibility with the conventional
TR6143. Furthermore, the TR6143 mode features two types, i.e., Mode 1 and Mode 2.
TR6143 Mode 1: The voltage limiter in the current source function only works with the same polarity
as that of the source. Consequently, if the current source value is set to 0 A in the
non-load condition, it may rise as high as the reverse polarity line voltage.
TR6143 Mode 2: The voltage limiter in the current source function works for both polarities.
Other items are all the same for Mode 1 and Mode 2.
Products with an A02 or earlier ROM revision do not feature the TR6143 Mode 2 function.
NOTE: The TR6143 Mode is designed so that user programs used in the TR6143 can be used in 6243/44 without
major modifications. However, some functions such as command processing time are not compatible with
TR6143. This means that all the programs used with the TR6143 are not guaranteed.
Since some functions like bias value are restricted, use the Original Mode to create new user programs.
When the TR6143 mode is used for the current source function, use the TR6143 Mode 2 because the bipo-
lar limiter will operate.
6.1 Setting the TR6143 Mode
Setting the TR6143 mode
For TR6143 Mode 1
While pressing the LOCAL and DIRECT buttons, turn ON the power.
TR6143 Action appears in the lower right of the screen, the TR6143 Mode 1 is
invoked and all the lamps light up. At this time, appears in the upper right of
the measurement screen.
For TR6143 Mode 2
While pressing the MENU and DIRECT buttons, turn ON the power.
TR6143 Action appears in the lower right of the screen, the TR6143 Mode 2 is
invoked and all the lamps light up. At this time, B appears in the upper right of
the measurement screen.
NOTE: Once the TR6143 mode is set, the 6243/44 will always start-up in the TR6143
mode whenever the power is turned ON.
In this case, the following parameters will always be established in fixed con-
ditions.
Source mode: DC. Measurement digits: 4-1/2 digits. Measurement: ON. Dis-
play: ON. Auto Range Delay: 0 ms.
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