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Front Panel Connectors
The instrument features these front panel connectors:
 The trigger level range for the auxiliary input (AUX IN) is adjustable from +8 V to –8 V. The
maximum input voltage is ±20 V.
 Use the probe compensation terminals (PROBE COMP) to compensate, calibrate, and deskew
passive or active voltage probes.
 Connect up to four probes (two probes for 2-channel models) to input channels (CH n) of the
instrument. Each vertical input channel has its own vertical control settings. Each probe input
channel has its own TekProbe interface.
 Use the ground (GND) terminal to connect the instrument to the same ground as the unit
under test.
Rear Panel Connectors
 The instrument features these rear panel connectors:
 Use the EXT REF connector to synchronize the instrument time base to an external 9.8 −
10.2 MHz reference frequency source. The reference input voltage range is 200 mV
p-p to 7Vp-p.
 Use the AUX OUT connector to obtain a TTL-compatible, negative polarity pulse when the
instrument triggers.
 Use the SIGNAL OUT connector to connect to a buffered version of the signal that is
attached to the Channel 3 input (4-channel instruments only). The amplitude is 50 mV/div
±20% into a 1 MΩ load, or 25 mV/div ±20% into a 50 Ω load.
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