# Measuring TCS for sample holder in more detail than 25-06-2012

# Pressure = 3.12e-7 mbar
# Va = 383 V
# Vf = -24 V
# Vv = 17.38 V
# Vd = 0.0 V
# If = 1.20 A

# Start at 9:57

# Vi (V)	Ie (uA)	Is(uA)
#0.00	10.4	0.00
#0.11	10.4	0.00
#0.20	10.5	0.01
#0.30	10.5	0.09 	# This is a big increase, so I decided to go back to 0.20 and step up in 0.01 V increments
#0.20	10.5	0.10	# This is wierd, should be ~ 0.01

# Stop 10:01
# The electrometer measuring Is has a different offset. 
# At the start of the experiment, I used the zero check to make sure the offset was 0.
# Now, the zero check shows an offset of 0.14 uA (at 10:03; it has been increasing since I stopped recording)

# Start 10:03, recording offset vs time

# Time (min)	Offset (uA)
0	0.14
1	0.19 # Disconnected electrometer lead... no effect
2	0.21
3	0.24

# Scale on electrometer is 10e-6 A , multiplier is x 0.01

# Reset scale, wait