HP 6826A Service Manual

Figure 3-7. Remote Voltage Programming,
Constant Voltage
Figure 3-7 shows a variable dc level (programming voltage)
applied to the Hi (A1) and LO (A2) input terminals. Since
the BPS/A provides an inverted output in the fixed gain
amplifier mode, a positive input (A1 positive, A2 negative)
results in a negative output and a negative input (A1 nega¬
tive, A2 positive) results in a positive output. The front
panel or remote programming voltage controls are not appli
cable in this mode. The programming coefficient in the
fixed gain amplifier mode is as follows:
MAXIMUM
OUTPUT
PROGRAMMING
COEFFICIENT
IVIUUcL
HIGH
RANGE
LOW
RANGE
HIGH
RANGE
LOW
RANGE
6826A
±50V
* +5V 10 volts/
volt
1 volt/
volt
6827A
+ 100V
+ 10V
20 volts/
volt
2 volts/
volt
3-50 Variable Gain Amplifier. AC signals or a dc level
(positive or negative) can be amplified or attenuated in the
variable gain amplifier mode. Figure 3-7 shows a variable
dc levei (programming voltage) applied to the input termin¬
als A1 (HI IN) and A2 (LO IN). Since the BPS/A is non¬
inverting in the variable gain amplifier mode, a positive input
(A1 positive, A2 negative) results in a positive output and a
negative input (A1 negative, A2 positive) results in a nega¬
tive output. The other connections on Figure 3-7 are shown
for local control using front pane! controls, however, remote
control using external controls may also be employed. The
front panel or remote voltage controls can be used to atten¬
uate or amplify the input as required. With the front panel
VOLTAGE control or remote programming resistor set for
maximum output, the programming coefficient is as follows:
MODEL
MAXIMUM
OUTPUT
^PROGRAMMING
COEFFICIENT
HIGH
RANGE
LOW
RANGE
HIGH
RANGE
LOW
RANGE
6826A
±50V
±5V
20 volts/
volt
2 volts/
volt
6827A
±100V ±10V
40 volts/
volt
4 volts/
volt
"With front panel VOLTAGE control or remote program¬
ming resistor set for maximum rated output.
A! A2 4- -S - +S +
010
0
§
[0
0
a
A8 A9 AI0 All
AIZ
y vVv—’
R l
AI3 A14
9
SL
0
0
I®
s
2
AI5 AI6 AI7 AI8 AI9 A20A21
0 0
0
4
0
M
P
-j&Z
X- THESE SUPPLIES MUST BE ISOLATED
FROM POWER GROUND
Figure 3-8. Remote Voltage Programming,
Constant Current
3-52 Voltage Programming, Constant Current. Voltage
3-51 Fixed Gain Amplifier. AC signals up to 40kHz programming of the output current can be accomplished in
(6826A) or 30kHz (6827A) or a dc level (positive or nega- all three operating modes (power supply, variable gain am-
tive) can be amplified in the fixed gain amplifier mode. plifier, and fixed gain amplifier). Positive and negative dc
3-8

HP 6826A Specifications

General

Brand	HP
Model	6826A
Category	Power Supply
Language	English