ACCURATE ELECTRONICS INC
Practice Section 10401200 Rev A January 2014
PO BOX 1654 97075-1654 8687 SW HALL BLVD 97008 BEAVERTON OR USA 503.641.0118 FAX 503.646.3903
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5
FIGURE 5.
Testing Guide Checklist.
NOTE: when a signal is inserted at any input port of the bridge and/or when measurements are made at any output port, be certain that the test
equipment is arranged to accommodate the balanced 600 ohm impedance at these ports.
Test
Test Procedure
Normal Result
If normal conditions are not met, verify:
Insertion Loss
Connect test oscillator arranged for 1000Hz signal at
0 dBm to any input port (see FIG 5 for pin
assignments). Using transmission measuring set,
measure output level first at output port 1,2,3, or 4 and
then at output port 5 or 6. Do not, however, use output
port with same number and input port to which
oscillator is connected.
With CH1 to CH6 RCV and
CH1 to CH6 XMT set to 0
position, output level approx.
same as input.
- Power applied to module.
- Wiring.
- Proper impedance terminations (check for double terminations)
- Jumper CH1 to CH6 RCV and/or jumper CH1 to CH6 XMT in proper positions.
- Input level.
Noise
Connect shorting straps between tip and ring
connector pins of all input ports (see Figure 4. For
terminal assignments). Using noise test set, measure
noise level across tip and ring connector pins of
output port 1,2,3 or 4 and also across tip and ring
connector pins of output port 5 or 6.
Noise level less than 18 dBm
for all insertion loss settings of
jumpers.
- All input ports shorted as directed.
- Noise test set at proper terminating impedance.
- High therefore environment affecting R.F. test set.
FIGURE 4.
External Connections Layout.
GOLD PINS
INPUT PORT 6
RING
56
55
TIP
INPUT PORT 6
INPUT PORT 6
Sx
54
53
RING
OUTPUT PORT 4
52
51
TIP
OUTPUT PORT 4
INPUT PORT 5
Sx
50
49
Sx1
OUTPUT PORT 4
INPUT PORT 5
RING
48
47
INPUT PORT 5
TIP
46
45
44
43
42
41
OUTPUT PORT 5
TIP
40
39
RING
OUTPUT PORT 5
38
37
Sx1
OUTPUT PORT 5
36
35
BATT
-48VDC INPUT
34
33
32
31
INPUT PORT 4
Sx
30
29
INPUT PORT 4
RING
28
27
INPUT PORT 4
TIP
26
25
Sx1
OUTPUT PORT 6
INPUT PORT 3
RING
24
23
INPUT PORT 3
TIP
22
21
Sx1
OUTPUT PORT 2
20
19
OUTPUT PORT 3
Sx1
18
17
GND
INPUT PWR
INPUT PORT 3
Sx
16
15
Sx
INPUT PORT 1
INPUT PORT 2
Sx
14
13
TIP
OUTPUT PORT 6
INPUT PORT 2
RING
12
11
RING
OUTPUT PORT 6
INPUT PORT 2
TIP
10
9
Sx1
OUTPUT PORT 1
OUTPUT PORT 3
TIP
8
7
RING
OUTPUT PORT 2
OUTPUT PORT 3
RING
6
5
TIP
OUTPUT PORT 1
OUTPUT PORT 2
TIP
4
3
RING
OUTPUT PORT 1
INPUT PORT 1
RING
2
1
TIP
INPUT PORT 1
