Tektronix CSA7404B - Page 45

Specifications
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
1-21
Table 1- 7: Input/output port specifications ( Cont.)
Characteristic Description
n Probe Com pensator Output Front-panel BNC connector, requires Probe Cal Deskew Fixture for probe
attachment
Note: During probe calibration only, a relay switches a DC calibration voltage
to this output in place of the 1 kHz square wave. This voltage varies from
--10 V to +10 V with a source impedance l ess than 1 Ω and short circuit
current as high as 300 mA.
Output voltage Frequency
500 mV (from base to top) ± 20% into a 50 Ω
load (Vol = --500 m V, Voh = 0 V typical)
1 kHz ± 5%
1V(frombasetotop)± 20% into a 1 ΜΩ
load (Vol = --1.0 V, Voh = 0 V typical)
n Analog Signal Output amplitude BNC connector, provides a buffered version of the signal that is attached to
the channel 3 input when channel 3 is the trigger source
2
0
m
V
/
d
i
v
±
2
0
%
i
n
t
o
a
1
M
Ω
l
o
a
d
2
0
m
V
/
d
i
v
±
2
0
%
i
n
t
o
a
1
M
Ω
l
o
a
d
10 mV/div ± 20% into a 50 Ω load
Offset: between --100 mV and --170 mV into 50 Ω
A
n
a
l
o
g
S
i
g
n
a
l
O
u
t
p
u
t
b
a
n
d
w
i
d
t
h
t
y
p
i
c
a
l
1
8
G
H
z
i
n
t
o
a
5
0
Ω
l
o
a
d
A
n
a
l
og
S
i
gn
a
l
O
u
t
pu
t
b
a
n
d
w
i
d
t
h
,
t
y
p
i
c
a
l
1
.
8
G
H
z
i
n
t
o
a
5
0
Ω
l
o
a
d
n Auxiliary Output levels BNC connector, provides a TTL-compatible pulse (polarity selectable) for
each A or B tri gger (select able)
V
out
high V
out
low (true)
≥2.5 V into open circuit,
≥1.0 V into 50 Ω load
≤0.7 V with ≤4masink,
≤0.25 V into 50 Ω load