Tektronix ADA400A Instruction Manual page 12

Oscilloscopes with the
TEKPROBE interface
Recommended accessories for the ADA400A Differential Preamplifier include
the following items:
w = P6101B 1X Passive Probe
w 1103 Probe Power Supply for oscilloscopes that do not have the TEK-
Before you connect the output of the ADA400A Differential Preamplifier,
determine whether or not your oscilloscope has the TEKPROBE interface. The
interface provides connections for power, signal, and scale factor coding for
The polarized output connector of ADA4O0A Differential Preamplifier connects
NOTE. To avoid misleading scale factor readout of the ADA400A Differential
Preamplifier on oscilloscopes other than the TDS400A Series, you must remove
the preamplifier housing and disconnect the internal line that carries the scale
TDS 400A. The TDS 400A Series oscilloscopes are compatible with the scale
factor coding of the ADA400A Differential Preamplifier. The factory configures
the internal jumper to connect the scale factor coding. See Figure 1.
Other TDS and 11000 Series Models. If you do not have a TDS 400A Series
oscilloscope, use the procedure that follows to disable the scale factor coding:
1. Remove the top housing of the preamplifier by following the procedures on
2. Identify the jumper on the data line (See Figure 1) and position the jumper to
3. Replace the top housing on the preamplifier box.
ADA4OOA Instruction Manual