1. MODE switch
9. Fuses
10. Power ON indicator lamp
11. Power ON/OFF switch
12. STRIP CHART OUTPUT switch
13. Chart paper
2. MEASUREMENT STATUS lamps
3. CASSETTE STATUS lamps
4. Test control panel door
5. LAMP TEST button
6. SPAN adjustment (for chart “width” adjustment)
7. OFFSET adjustment (aligns stylus to chart paper)
8. Lamp BRIGHTNESS Control
14. OPEN TO RECORD door
15. OPEN TO RECORD CASSETTE door
16. CYCLE switch (recordings & tests)
Figure 2-5.—AN/BQH-7A oceanographic data set recorder.
AN/BQH-7(A) OCEANOGRAPHIC
DATA SET
The AN/BQH-7A oceanographic data set recorder
(fig. 2-5) looks very different from the AN/SSQ-(series)
recorders. The recording chart paper feeds out of the
chart door on the right front of the recorder; there is no
take-up roll. Each chart recording must be removed
from the recorder after each sounding, and the recorder
door must be open during operation. As an additional
feature, each sounding is also transcribed on cassette
tape, which is inserted in the tape holder on the left front
of the recorder.
Basic Operation
The observation procedure is very similar to that of
the AN/SSQ-(series) recorders. The “reload” light
illuminates after each sounding. This light goes out and
the “launch” light illuminates after a new probe is
inserted in the launcher. Recording (both chart and
tape) automatically starts as the probe enters the water.
Like the AN/SSQ-61A system, the BQH-7A also
has an auxiliary signal output cable. The AN/BQH-7A
auxiliary output is a digital signal designed for direct
link-up to the shipboard Navy Tactical Data System
(NTDS) computer.
Where shipboard tactical
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