SECTION IV
4
INITIAL CHECKOUT
GENERAL
The simple tests described in this section are
generally sufficient to check the instrument on
receipt. The purpose of these tests is only to esta-
blish that the instrument is in operating condition.
This procedure is not a substitute for the specifica-
tion tests in Section VII, which the user may want
to perform before placing the unit in service.
Table 4-1: Card-edge Connector J1 Pin
Assignments
1
Filtered output high
2
Zero-detect control
3
16 V Unregulated
4
Wideband output high
5
+
16 V Unregulated
KEY
6
Output and power low
7
Output and power low
8
16 V Regulated
9
Not used
10
+
16 V Regulated
11
Not used
12
Not used
SLOT
To reduce capacitance between
Pins 12 and 13.
13
Inverting input
14
Noninverting input
15
Shield
16
Not used
17
Not used
18
Not used
WARNING
When using an enclosure, make sure that its
chassis is connected to earth ground, preferably
through third-wire ground.
An Ectron Model 560H amplifier can be tested in a
513 Series or 516 Series enclosure or on the bench.
If an Ectron 516 Series enclosure is used, please
refer to Note 2 on Drawing 560-602 and Figure 5-1
concerning the removal of Jumpers EE and FF.
CAUTION
Failure to remove Jumpers EE and FF will re-
sult in damage to the internal power supplies of
the 516 series enclosure.
Table 4-1 shows the card-edge connector J1 pin
assignments for the Model 560H if it is to be
bench-tested. The mating connector is a Cinch
50-18-A-20 (Ectron P/N 1-314018-0) with a polar-
izing key Cinch 50-PK-2 (Ectron P/N 1-319201-0)
installed between Pins 5 and 6.
CAUTION
Ensure that connections to the amplifier are
correct before applying power or signal volt-
ages. Refer to Table 4-1 for correct pin assign-
ments. Note that all pins are connected to their
complements by plated-through holes.
INPUT CONNECTIONS
The input is applied to J1, Pins 13 (
) and 14 (
).
In most installations the input leads are guarded
electrostatically by an isolated and insulated shield
which is connected to guard J1, Pin 15.
CAUTION
Be sure that the signal source connected to the
amplifier input does not exceed 20 V dc or peak
ac with respect to output and power low, or
serious damage may occur.
OUTPUT CONNECTIONS
The wideband output is available on J1, Pins 4
(high) and 7 (common), and the filtered output on
J1, Pin 1 (high) and J1, Pin 6 (common). For these
tests either or both common pins should be
connected to the low side of all test equipment and
connected to power line ground. Tests on both
outputs can then be conducted by switching the
oscilloscope between J1, Pin 4 and Pin 1.
4-1
