
1–4 Calibrating Your Module
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The BTR echoes back the status of each of the channels to verify
calibration. If selected channels were calibrated satisfactorily, the
BTR will reflect this by having their bits set to 1. (In Differential
mode, the upper byte of word 21 in the BTR is not set (bits 8–15
decimal or 10–17 octal are 0).)
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4. Proceed to Gain Calibration below.
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Calibrating gain requires that you apply 5.000V, 10.000V or 20mA
(as determined by your range and mode) (Table 1.A) across each
input channel.
1. Apply power to the module.
2. Apply the gain voltage as shown in Table 1.A to all 16 channels
(single-ended) or 8 channels (differential).
3. After the connections stabilize, request the gain calibration by
sending a 39 word block transfer write (BTW) to the module.
Refer to chapter 4.
When the BTW is sent, all selected channels are calibrated (set to
1) shown in Table 1.A. If a channel is not selected for
calibration, its bit is 0. (In Differential mode, the upper byte of
word 39 is not set (bits 8–15 decimal or 10–17 octal are 0).) All
bits in word 38 will be set to 0.
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