Does this excerpt from here (Tektronix Catalog from 1964 #23:
https://archive.org/stream/bitsavers_tektronixclog196423_241580406/Tektronix_Catalog_1964_23_djvu.txt) help?:
P6016 AC CURRENT PROBE
The P6016 Probe offers two current detecting systems
for use with Tektronix wide-band oscilloscopes, the P60I6
Probe and Type 737 Amplifier combination, or the P60I6
Probe and Passive Termination combination.
The Probe and Amplifier combination measures currents
over a wide range with risetimes to 20 nsec. The Probe
and Passive combination is not quite as flexible, but has
improved passband characteristics.
PROBE AND TYPE 131 AMPLIFIER
SENSITIVITY with a 50 mv/div oscilloscope input is 1 ma/
div basic sensitivity with 10 calibrated steps from 1 ma/div to
1 amp/div in a 1-2-5 sequence, accuracy within 3%. Variable
control on the oscilloscope provides continuous uncalibrated
ranging between steps.
NOISE is equivalent to a 100-ju.amp, pk-to-pk, input signal.
RISETIME is 20 nsec with a Tektronix Type K Plug-In Unit
and Type 540A-Series Oscilloscope.
PASSBAND is approximately 17Mc at 3-db down.
DELAY TIME is 40 nsec or less measured at the 50% pulse
amplitude points.
LOW-FREQUENCY RESPONSE at 3-db down is 50 cps.
AC CURRENT SATURATION RATING is 15 amps pk-to-pk,
decreasing to 8 amps at 400 cps, 400 ma at 50 cps.
POWER REQUIREMENT is 105-125 v ac, approximately 0.5
watt at 117v, or approximately 1 watt at 234 v ac, or 0.2
watt at 22.5* battery charge.
P6016 PROBE, TYPE 131 AMPLIFIER, 117 V POWER SUPPLY
(015-054 LOCKING BNC or 015-030 UHF) $235.00
P6016 PROBE, TYPE 131 AMPLIFIER, 234 V POWER SUPPLY
(015-055 LOCKING BNC or 015-045 UHF) 235.00
TYPE 131 AMPLIFIER AND 117 V POWER SUPPLY
(015-051 LOCKING BNC or 015-011 UHF) 160.00
TYPE 131 AMPLIFIER AND 234 V POWER SUPPLY
(015-052 LOCKING BNC or 015-024 UHF) 160.00
TYPE 131 AMPLIFIER AND 22.5 V BATTERY ADAPTER
(015-053 LOCKING BNC or 015-026 UHF) 120.00
TYPE 131 AMPLIFIER, less power supply
(015-050 LOCKING BNC or 015-029 UHF) 115.00
117 V POWER SUPPLY ONLY (015-027) 60.00
234 V POWER SUPPLY ONLY (015-028) , 60.00 *22.5 V BATTERY ADAPTER ONLY (013-050) 8.00
CALIBRATOR ADAPTER (017-031) 3.50