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943-227-15 Digital Preamplifier
Operator Manual
3-2
NOTE
The electrometer circuitry in the preamplifier is highly sensitive to
moisture and physical damage. Use extreme care when the
preamplifier case is opened as the high impedance electrometer
circuitry is easily damaged. Do not leave the preamplifier
enclosure in the open position for any extended period of time.
The preamplifier terminations are listed below.
Table 3-1. 943-227-15 Preamplifier Electrical Connections
943-227-15
943-27-15VL
TB1- Description
Connects To
977-210-10M
Description
Connects To
977-210-10M
1 XMIT
J4-1
+ VL, 15
VDC
J3-1
2 DTR
J4-2
+ TX
J3-2
3 GND
J4-3
- TX
J3-3
4 REC
J4-4
- VL
J3-4
5
Not Used
Not Used
+ RX
J3-5
6
Not Used
Not Used
- RX
J3-6
7 + 15 VDC J3-7 Not Used
Not Used
8 Ground
J3-8
Ground
J3-8
9 - 15 VDC J3-4 Not Used Not Used
10 Not Used Not Used Not Used J3-11
Detector
Connections
Detector
Connections
HV Detector MHV
From Field
coaxial cable
Detector
MHV
From Field
coaxial cable
SIG Detector BNC
Factory
Terminated,
To 977-200-
15M, R41
Detector
BNC
Factory
Terminated,
To 977-200-
15M, R41
3.2 Set-up
To place the system in operation, the following steps should be performed:
NOTE
Ensure you have read and fully understand
Section 1, 2 and 3 prior to continuing.
1. Verify that jumpers and DIP switches and jumpers on the preamplifier, are set for the operational
features desired. Refer to Section 1, Table 1-4.
2. Refer to the applicable controller manual prior to powering up the controller.